FRACTURING SYSTEM COMPONENT AND ASSEMBLY, AND SYSTEM AND METHOD FOR FRACTURING

Abstract

Apparatus and methods are disclosed for assembling a multi-well fracturing system, and components useful in such a system, and for performing fracturing operations. The multi-well fracturing systems include a movable conduit as a switching member between multiple branches of the fracturing system which extend to different wells within the system. Some such systems may include one or more components placed on adjustable skids to facilitate assembly of the fracturing system.

Description

CLAIM OF PRIORITY

This patent application claims the benefit of U.S. Provisional Patent Application No. 62/932,429, filed Nov. 7, 2019, and U.S. Provisional Patent Application No. 62/831,462, filed Apr. 9, 2019, which are incorporated by reference herein in their entirety.

BACKGROUND

The present description relates generally structures for use in fracturing operations, such as may be performed on oil or gas wells. Discussed structures include platforms that facilitate adjustment of lateral positioning along two axes, which may be used during connecting of the fracturing system. Such adjustment can be implemented, in some examples, in a manner to simplify the assembling of the system and/or to reduce the time required to assemble the system. Additional discussed structures relate to a fracturing system configuration facilitating sequential fracturing of multiple wells while minimizing or avoiding problems encountered with conventional fracturing system; and more particularly relates to a system configuration allowing switching between multiple branches of a fracturing system through a movable conduit.

Fracturing systems as commonly used for operations on wells can include a wide variety of individual components; but generally require an intake manifold (in some configurations referred to as a “goat head”) providing connections with a pumping assembly (which in many cases may involve multiple pumps, such as in the form of pump trucks), and a fracturing manifold that receives fluid from the intake manifold, through a series of connecting blocks, valves, spools, and conduits, and potentially other structures, to a fracturing tree installed on the wellhead. (For purposes of the present description, the term “fracturing components” includes any of connecting blocks, valves, spools, and conduits; but does not exclude other components that might be assembled in combination with such structures). Some fracturing systems include a “zipper” manifold that provides connections to multiple fracturing branches, isolated by valves, so that fracturing fluid/pressure can be redirected from one well to another.

Conventional multi-well fracturing systems, coupled in a “zipper” manifold configuration, are dependent upon flow control valves to isolate fluid paths to respective wells. Such systems can experience leakage of pressure from an active branch of the manifold to inactive branches of the manifold; which is both problematic from an operational point of view and potentially dangerous.

Additionally, as is known to persons skilled in the art, in many cases, the intake manifold some individual components forming a multi-well fracturing system may be mounted on respective skids. As is also known to such persons, the components are extremely heavy. For example, an equipment stack on a skid supporting at least a portion of a fracturing manifold can weigh between 18 and 25 tons. As a result, moving such a skid relative to, for example, an intake manifold assembly (which may be on a separate skid) and a fracturing tree at the wellhead, with the precision needed to provide secure mechanical and fluid connections can be difficult.

Some attempts in the prior art to address these problems include pivoting couplings and/or extensible components, to facilitate compensation for less than ideally placed components. Such prior art solutions, however, can be relatively expensive, and present potential points of failure in the high-pressure fracturing system.

BRIEF DESCRIPTION OF THE DRAWINGS

In the drawings, which are not necessarily drawn to scale, like numerals may describe similar components in different views. Like numerals having different letter suffixes may represent different instances of similar components. The drawings illustrate generally, by way of example, but not by way of limitation, various embodiments discussed in the present document.

FIG. 1 depicts an example fracturing system including example configurations of adjustable components, in the form of adjustable skid units, as described later herein.

FIG. 2 depicts a representative portion of an example fracturing manifold stack of FIG. 1, in place upon an adjustable base of a skid, illustrated from an oblique perspective.

FIG. 3 depicts a top view of the example skid and portion of the fracturing manifold stack of FIG. 2.

FIG. 4 depicts a bottom view of the example skid and portion of the fracturing manifold stack of FIG. 2.

FIG. 5 depicts an alternative example of a skid with an adjustable base analogous to that of the skid of FIGS. 2-4, but depicting configuration alternatives.

FIG. 6 depicts the adjustable base of a skid of FIG. 5 from a side view (and including a lower connecting block of a fracturing manifold stack).

FIG. 7 depicts an example fracturing system from a top plan view.

FIGS. 8A-8B depict the fracturing system of FIG. 7, from an elevated oblique view in FIG. 8A, and from an elevated opposite side view in FIG. 8B.

FIG. 9 depicts a flowchart of an example method for assembling a fracturing system.

FIG. 10 depicts an example configuration of a movable conduit as may be utilized in the fracturing systems of FIG. 7.

FIG. 11 depicts an example configuration of a pin and box quick release connector constructed to facilitate seal integrity verification.

DETAILED DESCRIPTION

The following description and the drawings sufficiently illustrate specific embodiments to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. Portions and features of some embodiments may be included in, or substituted for, those of other embodiments. Embodiments set forth in the claims encompass all available equivalents of those claims.

The present disclosure addresses a configuration of a fracturing system for multi-well fracturing operations which facilitates fracturing of multiple wells coupled to the fracturing system, while avoiding risks of pressure leakage from an active fracturing branch to an active fracturing branch, and the risks associated therewith. Additionally, the described fracturing system can be implemented in a manner to provide a visual indication of the active fracturing branch. In the depicted embodiments, a movable conduit is utilized to selectively engage a fluid supply location with a fluid inlet to a fracturing branch extending to a single wellhead assembly of a selected well to be perforated. Also described is an example configuration for the movable conduit. An example fracturing system of this type is discussed in reference to FIGS. 7-10 of the application.

An example variation of the described fracturing system includes placing selected components of the multi-well fracturing system, such as a portion of a fracturing manifold, on respective adjustable platforms providing adjustment relative to two perpendicular axes extending generally relative to a horizontal plane. For purposes of the present description, the adjustable platform will be described as being incorporated into a skid unit (or “skid”) of a configuration as is commonly used for land-based fracturing operations. The term “skid” as used herein refers to any movable platform configured to provide a supporting surface for equipment, for example some portion of the fracturing equipment. Common embodiments of such skids include one or more supporting surfaces supported by parallel rails. The use of components on such a movable platform simplifies alignment of components with one another, and also facilitates lateral movement of components as may be useful in assembling and disassembling the fracturing system, as well as in replacing individual components of the fracturing system. Such a skid having an adjustable platform is described relative to FIGS. 1-6. As is apparent from the following discussion, use of a skid with a moveable platform can beneficial in many applications, and is not limited to a fracturing system of the type described relative to FIGS. 7-11; and is further not limited to use solely in fracturing systems, it can be used in many oilfield applications which require precise positioning of heavy components, such as blocks, valves, conduits, and other pieces of equipment.

As described relative to an example embodiment, the adjustable platform comprises two supporting structures, of which a first structure is movable along a first (“X”) axis relative to the skid; and the second structure is supported above the first structure and is movable along a second (“Y”) axis relative to the skid. Various forms of drivers (or “prime movers,” as the terms are used herein interchangeably) may be utilized to cause motion along the respective axes. In some example embodiments, opposing pneumatic jacks having a capacity of about 20 tons may be utilized. In other configurations, hydraulic jacks or other prime movers could be utilized; and/or electrically driven motors or other prime movers may be utilized.

In the depicted examples discussed herein, pneumatic jacks are located on opposing sides of each supporting structure so that all movement along the respective axes is accomplished by a “push” motion. Additionally, bolted connections between the supporting structures are provided so that once movement along the two axes brings components into a desired position (establishing alignment with other components), the first and second supporting structures may be secured into relative position with one another. Additionally, the lowermost supporting structure may be locked into place relative to the frame of the skid, such as by threaded wedge nuts, or similar devices.

Referring now to the figures in more detail, FIG. 1 depicts an example fracturing system 100, including an intake manifold (or “goat head”) 102, which will be connected through multiple conduits to pumping units (not depicted). The intake manifold includes two branches 104A, 104B extending from the goat head to respective examples of fracturing manifold stacks, indicated generally at 106A, 106B. Each fracturing manifold stack is connected by a horizontal link 108A, 108B, to a respective fracturing tree 110A, 110B representative of an example configuration that would be received installed on a respective wellhead.

In the depicted example, each manifold stack 106A, 106B the supported on a respective skid 112A, 112B having an adjustable platform configured as described in more detail below. As a result of the adjustable platforms of each skid 112A, 112B, each manifold stack can be adjusted along X/Y horizontal axes to facilitate coupling of each stack to a respective branch 104A, 104B of the intake manifold, as well as to respective horizontal link 108A, 108B, without the need for movement of supporting skids or inclusion of rotating or extensible couplings.

In the depicted example, each manifold stack 106A, 106B, is formed of a combination of fracturing components. The two depicted manifold stacks are similar, and thus the example configuration will be discussed only in reference to manifold stack 106A. Manifold stack 106A, supported by skid 112A, includes a connecting block 114, coupled directly to the adjustable assembly on skid 112A. A spool 116 then extends to a manual fracturing valve 118. Another spool 120, then extends to a hydraulic fracturing valve 122; and a pair of spools 124, 126 extend to an upper connecting block 128, which connects to horizontal link 108A. The identified components are provided as an example fracturing manifold stack. As persons skilled in the art having the benefit of this disclosure will recognize, other configurations will be used in other systems. As will be apparent to such persons, each manifold stack may include additional and/or different components. For example, additional or other forms of valves may be incorporated; and additional or fewer spacer spools may be required. Fracturing manifold stacks will commonly include a given set of “fracturing components,” such as a lower connecting block, a mechanical fracturing valve, a hydraulic fracturing valve, and an upper connecting block. However, the currently described systems are not limited to a specific configuration or arrangement of individual fracturing components in a fracturing manifold stack; or to use of the skid for supporting a fracturing manifold stack. For example, a skid incorporating an adjustable assembly may also be used for supporting the goat head, or other components of the fracturing system.

Referring now to FIGS. 2-4, those figures depict respective views of an example skid 200 including an adjustable platform, indicated generally at 202. FIGS. 2, 6, and 7, all depict a representative connecting block 204, and a manual fracturing valve 206 (as may be interconnected through a spool), analogous those depicted in the example of FIG. 1.

Skid 200 includes structural members, including two side rails 210, and two end rails 212, defining a rectangular box in a conventional configuration. Additionally, as can best be seen in the bottom view of FIG. 7, skid 200 also includes multiple internal rails 214 (three are depicted), also extending in parallel to side rails 210. The first (lower) sliding plate 216 is retained in sliding relation to internal rails 214. In one preferred implementation, box channel pieces 218 extend around internal rails 214 and are coupled (such as by welding) to lower sliding plate 216. Additionally, in a preferred embodiment lower sliding plate 216 will also ride on top of side rails 210 (as depicted, e.g., in FIGS. 2, 5, and 6). The engagement between channel pieces 218 and internal rails 214 restricts movement of lower sliding plate 216 to a single axis, as indicated at 220. In one example, lower sliding plate 216 may be formed of approximately 2 inch thick steel, for example of 4130 alloy.

Skid 200 further includes an upper sliding structure, in the depicted example in the form of an upper sliding plate assembly 222. In some example configurations, as depicted, sliding plate assembly 222 can be formed to define a pedestal 224 extending above supporting flange 226, extending at least to either side of pedestal 224. The forming of pedestal 224 facilitates threaded connections of connecting block 204 with upper sliding plate assembly 222. Flanges 226 each contain elongated tracks (apertures) extending in a direction perpendicular to that of internal rails 214, to facilitate attachment through bolts 242 extending through the elongated tracks and coupling upper sliding plate assembly 222 with lower sliding plate 216. The elongated tracks allow translational movement between upper sliding plate assembly 222 relative to lower sliding plate 216; but can be tightened when the two structures are in a desired position, to avoid further movement. In example embodiments, upper sliding plate assembly 222 may also be formed of approximately 2 inch thick steel, as used for lower sliding plate 216.

As identified previously, in the example embodiment, pneumatic jacks are utilized as the prime movers for each of lower sliding plate 216 and upper sliding plate assembly 222. In one example configuration a jack plate 230 is coupled near each end of skid 200. Each jack plate is preferably secured, such as by welding, to each of side rails 210 and a respective end rail 212. Each jack plate 230 includes a jack support 232 providing a mounting for a respective pneumatic jack 234. Pneumatic jacks 234 can be placed opposite one another such that each can be actuated to push lower sliding plate 216 in a respective direction relative to axis 220 (i.e., along internal sliding rails 214). In some examples, each pneumatic jack 234 can be placed to apply force directly to lower sliding plate 216. In other examples, such as discussed relative to FIGS. 5 and 6, initiating movement of lower sliding plate 216 may include securing upper sliding plate assembly 222 to lower sliding plate 216 through use of bolts 242, and applying force through one of pneumatic jacks 234 through upper sliding plate assembly 222 so as to move lower sliding plate 216 relative to axis 220.

In the depicted example, each jack plate 230 also includes a pair of vertical screws, which may be actuated by a hand crank, for vertical adjustment of skid 200 relative to the ground, or another supporting surface.

Skid 200 also includes side jack supports 236 coupled to lower sliding plate 216, and configured to provide a mounting for respective pneumatic jacks 238 to push upper sliding plate assembly 222 in a respective direction along an axis perpendicular to axis 220. Again, pneumatic jacks 238 are in generally opposed relation to one another on opposite sides of upper sliding plate assembly 222.

In one example configuration, sliding plate 216 and upper sliding plate assembly 222 may be configured to each provide approximately 8-10 inches of movement relative to the respective axes of movement. In some configurations, each prime mover can be removably mounted relative to a respective jack support 232, 236. In some examples, the prime mover is may be mounted on rails allowing quick disconnect, for shipping, for example. In other configurations, removal of a prime mover on one side may allow additional travel of the associated sliding structure, facilitating additional adjustment relative to that possible with all prime movers in place.

As noted previously, wedge bolts, or similar structures, as indicated at 240, extending through lower sliding plate 216, and include a wedge to provide gripping engagement of side rails 210 underneath lower sliding plate 216, to secure the plate in position when desired. Similarly, the engagement of securing bolts 242 extending through elongated tracks 228 in upper sliding plate assembly 222 facilitates securing of that assembly in a fixed position relative to lower sliding plate 216. Because the prime movers for the upper sliding plate assembly 222 are carried entirely on lower sliding plate 216 adjustment of either structure does not induce undesired movement in the other.

Referring now to FIG. 5, the figure depicts a similar skid 500 directly analogous to the described structure of skid 200, but incorporating alternative structural variations. Many aspects and functions of skid 500 are directly analogous to those of skid 200, and thus have been numbered similarly to that figure here. FIG. 5 depicts an alternative configuration in which the vertical adjustment screws 502 are secured to the outer perimeter of the skid, rather than being mounted to jack plates 230. Additionally, upper sliding plate assembly 504, includes additional features relative to upper sliding plate assembly 222. Upper sliding plate assembly 504 includes outer vertical flanges 506 extending upwardly from each side of the assembly. Flanges 506 provide engagement surfaces for pneumatic jacks 234 to engage to cause movement of lower sliding plate 216. As noted above in operation of this embodiment, the two sliding structures will be secured in fixed relation through use of securing bolts 242 and thus force applied by pneumatic jacks 234 will result in movement relative to axis 220. Additionally, jack plates 510 have been added across apertures 508 as a contact point for jacks 238. Other aspects of skid 200 discussed above are directly applicable to skid 500.

In use of an adjustable system is described herein in assembling a fracturing system, the structure including the adjustable platform, such as a skid as described herein can be placed in a measured desired position on the ground. In some examples, the skid will have equipment, such as for example, connecting block 204, and/or manual fracturing valve 206, already fastened to it. Although in other examples the fracturing components may be assembled on the skid once it is in position.

As the fracturing system is assembled, connections will be made between the fracturing components supported by the adjustable platform and other components (for example, as depicted and discussed relative to FIG. 1).

A skid, such as either of example skids 200 or 500 as described herein will be placed into a measured position selected to facilitate making the necessary mechanical and fluidic connections to assemble the fracturing assembly. However, the criticality of that placement is reduced in view of the ability to operate one or more of the prime movers to translate the two movable structures of the adjustable platform along respective axes, to the necessary position.

Referring now to FIGS. 7 and 8A-8B, the figures depict an example fracturing system 700 configured to facilitate sequential fracturing operations on multiple wells. Fracturing system 700 allows the path of the fracturing fluid be directed from one wellhead to another without the risk of pressure leakage between the fracturing paths. Fracturing system 700 therefore addresses problems with conventional fracturing systems that include a manifold simultaneously coupled to multiple wellheads, which rely on valves for pressure isolation between fracturing paths, as known in various conventional “zipper” manifold configurations. In such zipper manifold configurations, relatively low flow rates to an isolation valve element (for example, a valve gate) can be insufficient to assure the isolation function of the valve element, allowing pressure to leak from an active branch of the fracturing manifold, to another branch intended to be isolated from that pressure. Such pressure leakage both diminishes the pressure in the active branch and therefore can impair the effectiveness in the fracturing operation, cause excessive damage to valves and other components, and/or present a safety hazard.

The example fracturing system 700 facilitates assembly of the multiple branches of the fracturing system to wellhead assemblies at multiple wells to be assembled before the fracturing operation (in a manner similar to that achieved with “zipper” configurations). However, instead of relying upon isolation of each branch through a valve, components forming each branch are arranged and configured to be selectively coupled to a common connection block (receiving fluid from the input manifold) through a movable conduit connecting only a single branch of the fracturing system to the input manifold at a time. An example fracturing system as described herein, can also be configured, in some examples to avoid the use of swivels, as may be prone to leakage and/or damage in the high pressure environment of fracturing operations. The capability of fracturing systems as described herein of eliminating the requirement of at least some valves and/or swivels simplifies not only assembly and disassembly of the system, but also reduces components susceptible to damage. Additionally, in accordance with the description herein, fracturing systems can be configured to reduce the number of blocks required to change direction of the fluid flow (such as 90 degree blocks, as described herein), relative to that required for comparable fracturing systems coupled in a zipper configuration as described earlier herein.

Assembly of a fracturing system such as fracturing system 700 can be assisted, in part, in selected embodiments, by mounting at least selected components of the fracturing system on adjustable skids, such as example skids 200 and 500 discussed above. As previously addressed, such skids include an adjustable platform (“base”) supported relative to multiple rails of the skid to move relative to multiple axes in a generally horizontal plane. The use of such adjustable skids facilitates placing of intermediate components within the branches of the fracturing system where appropriate solid interconnections can be made, and with sufficient precision to facilitate interconnections of different components through a movable conduit, as discussed in more detail below. Equally important, the use of such adjustable skids allows components to be removed from a system more easily than with nonadjustable systems.

The configuration of a multi-well fracturing system with a movable switching conduit as described herein, can be implemented without the use of adjustable skids (i.e. with conventionally mounted fracturing system components). Due to the significant practical advantages of mounting selected components on skids with adjustable platforms, the embodiments described herein describe example uses of skids with adjustable platforms in the example fracturing systems. However, any of the systems described herein can be implemented without adjustable skids, or without skids at all. For example, the present disclosure expressly contemplates that any of the fracturing systems described herein may be constructed with the various components forming the flow paths to the respective wells supported directly on the ground, or on any desired platform; as an alternative to the placement on adjustable skids as described herein.

FIG. 7 is an overhead, plan view of an example fracturing system 700; while FIG. 8A is an elevated perspective view of fracturing system 700 from one side; and FIG. 8B is an elevated perspective view from the opposite side. Example system 700 is depicted relative to three wellhead assemblies 702A-702C, each extending to a respective wellhead, indicated generally at 714A-714C (FIG. 8). As will be apparent to persons skilled in the art, the wellhead assemblies 702A-702C each comprise a stack of control equipment, such as a blowout preventer, one or more isolation valves, etc., and a coupling block 716A-716C, which connects to a respective branch of the fracturing system, with three fracturing branches indicated generally at 704A-704C.

In the depicted example, an intake manifold 708 (such as a “goat head” manifold, as discussed at 102, relative to FIG. 1), includes multiple fluid inlets for receiving pressurized fracturing fluid from pumps, in a manner known to persons skilled in the art. In some implementations, such as that depicted, the intake manifold can be placed on an adjustable skid 740. In the depicted example an outlet of intake manifold 708 is coupled through a conduit 718 to a connection block 712. Connection block 712 includes a fluid inlet coupled to conduit 718, for example on a side surface, and provides a 90 degree flow path extending to a fluid outlet, such as on the top surface of connection block 712. The fluid outlet of connection block 712 is configured to couple to a movable conduit 720.

The connection block 712 described herein will be, in many examples, an assembled unit including a block structure a portion of the flow path, and associated other structures used to establish the flow path through the block structure. For example, as described relative to the below examples, connection block 712 includes a first portion of a releasable connection to form a fluid inlet, and includes at least one flange to form a fluid outlet for bolting to conduits or other structures. Connection block 712 (distribution blocks 722A-C, discussed below) may each be unitary, in which all those structures are formed of a single piece; but more commonly will be an assembly of multiple components to form each of connection block 712, and distribution blocks 722A-C.

In some embodiments, the coupling will be through a relatively quick release connection. As used herein, the term “quick release connection” refers to a mechanical connection for high-pressure conduits that can be connected or disconnected more quickly than a bolted flange high-pressure connection. In some example configurations, the connection between the movable conduit and the fluid outlet of the connection block can be through a telescoping connection, for example as can be realized in a male/female connector with a first portion of the male/female connector formed on the connection block, and a second portion of the male/female connector formed on a first end of the movable conduit. In some examples, the male/female connector can include a flange on both the male and female connector portions, and the flanges can be coupled to one another through connecting device, such as a Greylock-type clamp, forming a circumferential structure extending around both such flanges and securing the flanges in secure proximity to one another, establishing the pressure tight connection through the male/female connector. In examples a remotely operated a remotely operated clamp (or other connecting device) may be used to connect components of the quick release connection.

In example fracturing system 700, each branch of the fracturing system extending to a respective wellhead assembly 702A-702C, extends from a distribution block 722A-722C, to the respective wellhead connection assembly, indicated generally at 726A-726C, which couples to a respective wellhead assembly 702A-702C. The specific design of the wellhead connection assemblies will be adapted to the specific needs of the fracturing system, to provide a high-pressure conduit extending from the outlet of a respective distribution block 722A-722C to the wellhead assembly. In the specific example of fracturing system 700, a first conduit 730A-730C couples a respective distribution block 722A-722C, to a first transition point. In the depicted example the first transition point includes a 90 degree block 724A-724C to turn the flow path from the horizontal path of first conduit 730A-730C to a vertically extending path through a vertical 732A-732C, which in the depicted example extends generally to a height equal to the vertical location of coupling blocks 716A-716C at the top of each wellhead assembly 702A-C. Another 90 degree block 734A-734C, transitions to a horizontal conduit 736A-736C coupled to coupling blocks 716A-716C. Advantageously, one or more components of the wellhead connection assemblies 726A-726C will also be placed on adjustable skids, such as skids 200 and 500. In example fracturing system 7, 90 degree blocks 724A-724C which make the transition from horizontal to vertical are each mounted on a respective adjustable skid 738A-738C.

In fracturing system 700, the distribution block 722A-722C of each fracturing branch 704A-704C is supported on the adjustable platform of an adjustable skid (200 or 500), as indicated at 706A-706C, to facilitate adjustment of the position of the distribution block 722A-722C. This positioning facilitates precise placement of each the distribution block 722A-722C such that the inlet of each distribution block, and the associated male/female connecting structures, when present, are equidistant from the outlet of connection block 712. This precise spacing allows movable conduit 720 to be moved to establish a fluid flow path between intake manifold 708 and each of distribution blocks 722A-722C. When movable conduit 720 is placed into engagement between connection block 712 and a respective distribution block 722A-722C, the movable conduit will be secured to each through the respective connection assembly as described above.

As depicted in FIGS. 7 and 8A-8B, in some embodiments, the use of the movable conduit 720 to establish individual flow paths can be implemented to eliminate valves to regulate flow to each branch of the fracturing system. Current “zipper” configurations utilize valves to allow fracturing flow to a selected branch at a time while closing off unselected branches. In addition to the problems resulting from potential leakage of such valves, such valves can be expensive to provide for the fracturing operation. Additionally, due to the high pressure and potentially abrasive materials involved in fracturing operations, such control valves can experience significant damage in the course of even a single fracturing operation, requiring expensive refurbishing, further adding to the cost of the fracturing operation. Further, the high visibility of the presence (or absence) of movable conduit 720 relative to each of the multiple fracturing branches provides a clear visual indicator to persons in the area of which fracturing branch is or may be under pressure. Such an indicator is not present when the fracturing path within a fracturing system is defined entirely by actuation of valves. In an example such as that of FIGS. 7 and 8, while additional valves could be added by a service provider, if desired; they are not specifically required as an essential element of defining the fluid flow path to the multiple wellheads. In some systems, for example control of each well may be handled by the wellhead assembly, by the existing valves and related structures provided for well control.

Referring now to FIG. 9, the figure depicts a flowchart of an example method 900 for assembling a fracturing system as described herein. As will be apparent to persons skilled in the art the identified operations of example method 900 may be performed in a different order than that presented.

As indicated at 902, the method includes placing an intake manifold at a selected location relative to the multiple wells. In some examples, this may include placing the intake manifold at a relatively central location, at least relative to the outermost wells, though such placement is not required. As depicted in FIGS. 7 and 8, the intake manifold is placed to one side of the depicted wells. In another example circumstance, the intake manifold may be placed centrally located between groups of wells to be fractured. For example, in the example of FIG. 700, multiple wells may exist on the opposite side of intake manifold (708) from wells 714A-C (i.e. in a mirror representation relative to the structure depicted).

As indicated at 904, method 900 includes placing connection block (712) configured to be coupled to the intake manifold in a desired placement. In some optional implementations (as are indicated in the flowchart by dashed line borders), as optionally indicated at 906 the connection block may include a fluid outlet comprising a first portion of a male/female connection assembly, which is configured to engage with a movable conduit.

As indicated at 908 multiple fracturing branches are assembled, with each fracturing branch extending to a respective wellhead assembly of the multiple wells to be fractured. As described, optionally each fracturing branch may include both a distribution block and a wellhead connection assembly coupling that distribution block to a respective wellhead assembly. As a result, assembling the multiple fracturing branches includes ascending all of the conduits and additional components to establish a high-pressure flow path between the distribution block fluid outlet and a respective wellhead assembly. As optionally indicated at 910, the connection block and the distribution block may be mounted on respective (i.e. first and second) adjustable skids. As optionally indicated at 912, the distribution block may in some examples include a fluid inlet that comprises a first portion of the second male/female connection assembly configured to engage with the movable conduit.

As optionally indicated at 914, wherein the fracturing assembly is assembled with first and second adjustable skids supporting the connection block and the distribution blocks, respectively (as indicated at 910), each adjustable skid may each include multiple rails, and an adjustable platform supported by the multiple rails, wherein the adjustable platform is movable along multiple axes in a horizontal plane. For example, the adjustable platform can be movable relative to two orthogonal planes as previously described relative to skids 200 and 500.

As indicated at 916, each of the distribution blocks will be positioned to place the fluid inlets to each respective distribution block at a common distance from the outlet of the connection block. This common spacing facilitates placing a single movable conduit in selective engagement with each distribution block to establish a respective fluid path between the intake manifold and each fracturing branch.

As indicated at 918, a movable conduit is placed to engage the connection block and a respective distribution block to establish a fluid flow path between the connection block (and the intake manifold) and the respective distribution block (and thereby with the wellhead assembly of a selected well).

As optionally indicated at 920 the distribution block fluid inlet comprises a first portion of a second male/female connection assembly configured to engage with a second end of the movable conduit. Similarly, as optionally indicated at 922, the movable conduit may include at a first end a second portion of the first male/female connection assembly at the connection block (as optionally discussed at 906, above); and may include at a second end a second portion of the second male/female connection assembly configured to engage with the first portion of the second male/female connection assembly of the distribution block, as discussed at 918.

Referring now to FIG. 10, the figure depicts an example configuration of a movable conduit 1000, with quick connect connection structures at each end, as an example configuration for movable conduit 720 of FIGS. 7-8A, 8B. Movable conduit 1000 includes a central conduit 1002, with a first 90 degree block 1004 at a first end, and a second 90 degree block 1006 at a second end. A pin connector 1008 is coupled to block 1004, and includes an extension 1010 forming a male portion of a first male/female connector with connection block 712 in example system 700. The mating (female) box connector 1012, which will be secured as a portion of a distribution block 722, includes a receiving bore 1014, and is depicted in engagement with extension 1010, in an operating engagement. In some example systems, pin connector 1008 will be maintained in secure engagement with box connector 1012 by a connecting structure 1016 (schematically represented by dashed lines), for example a conventional Grayloc-type clamp, as known to persons skilled in the art. Other suitable connecting mechanisms known to persons skilled in the art may be used in place of the Grayloc-type clamp; and in some instances, a remotely operable clamping mechanism may be used. Also as will be apparent to persons skilled in the art, sealing mechanisms will be included on one or both of pin connector 1008 and box connector 1012 to assure a pressure and fluid-tight connection.

In some examples, a similar pin and box or male/female connector, or another form of telescoping connector, may be used on the second end of movable conduit 1000. In some example systems, the connector at the second end of movable conduit 1000 will be shorter (i.e. will extend a lesser distance beneath block 1006, than pin connector 1008). That configuration will allow pin extension 1010 to remain in general engagement within receiving bore 1014 while movable conduit is being rotated from engagement with a first distribution block to engagement with a second distribution block, as described relative to the preceding figures.

As an example of such connector, movable conduit 1000 includes a flush joint connection assembly 1036. In the example configuration, flush joint connection assembly includes an upper member 1018 and a lower member 1020. Upper member 1018 is configured to bolt to block 1006 through a flange 1026, and includes a conduit 1022 terminating at a flat surface 1024. Upper member 1018 will include a circumferential flange adjacent flat surface 1024 as is familiar to persons skilled in the art (these flanges within connector 1038, and are comparable to those depicted in cross-section on members 1008 and 1012, coupled by connecting structure 1016 (there depicted in phantom). Lower member 1020 is configured to bolt to a distribution block (722A-C in FIGS. 7 and 8A-8B) through flange 1030, and includes a conduit 1032 terminating at a flat surface 1034. Lower member 1020 again includes a circumferential flange (not depicted) adjacent flat surface 1034. When placed in an operating configuration, as shown, flat surfaces of members 1020 and 1034 are placed adjacent one another, separated by a seal assembly suitable for a high pressure environment, and the two members 1018 and 1020 are secured in position by a connecting device 1038, for example a Greyloc-type clamp, which engages the circumferential flanges on upper member 1018 and lower member 1020. Again, in some examples, a remotely operable clamp (or other connecting device) can be used.

Referring now to FIG. 11, the figure indicates an example configuration of a pin and box, telescoping connector 1100, facilitating pressure integrity verification. Pin and box connector 1100 may be implemented as a quick release connector and is an example configuration that may be incorporated as the male/female connector of movable conduit 1000. For purposes of the present example, structures that correspond to those discussed relative to movable conduit 1000 are numbered similarly relative to telescoping connector 1100, and thus the basic mechanical structure and operation of the connector will not be repeated here. In connector 1100, a sealing structure, as indicated generally at 1102, is supported by extension 1010 of pin connector 1008. Sealing structure 1102 is configured to provide a pressure and fluid-tight seal under the pressures of a fracturing operation (which require elevated pressures, for example in the vicinity of 15,000 psi). In the example of connector 1100 sealing structure 1102 includes two separate seals 1104, 1106 vertically separated by an intermediate region (see also, FIG. 11). One or both of seals 1104, 1106 may be an elastomeric seal, such as a suitable material and size of O-ring (such as a slotted groove O-ring) retained within a respective circumferential recess 1110, 1112 in extension 1010. Other forms of elastomeric or other compressible/expandable seal structures may be utilized, for example chevron seals, and other seal configurations known to persons skilled in the art.

Connector 1100 also includes a Grayloc-type seal ring 1114 establishing a metal-to-metal seal between pin connector 1008 and box connector 1012. A particular capability of connector 1100 is to provide the ability to verify the integrity of the seal structure between extension 1010 and receiving bore 1014. As a result, a first pressure monitoring port 1116 is formed extending to engage receiving bore 1014 at a first position above sealing structure 1102. Connector 1100 also includes a second pressure monitoring port 1118 extending to engage receiving bore at a location which will be adjacent the intermediate region when extension 1010 is fully engaged within receiving bore 1014. Additionally, example connector 1100 further includes a third pressure monitoring port 1120 on the opposite side of the sealing structure 1102 from the first pressure monitoring port 1116. As will be appreciated by persons skilled in the art having the benefit of this disclosure, the use of three pressure monitoring ports arranged as described relative to the sealing structure allows verification of the integrity of the pressure seal within connector 1100, and including verification of the integrity of each of the two spaced seals 1104, 1106. Additionally, in the depicted example pressure monitoring port 1116 extends to a circumferential recess 1124 formed in the sidewall of receiving bore 1014. In the event that a defect in integrity is identified, a further pressure sealant may be pumped through pressure monitoring port 1116 to recess 1124 to restore pressure integrity through the connector 1100, such that no fluid or pressure leaks from central bore 1126 through connector 1100 under fracturing conditions. When not in use, each pressure port will be capped by a respective high-pressure plug 1122.

The following non-limiting Examples are provided as further description of the example embodiments of the described subject matter.

Example 1 is a fracturing skid configured to support one or more fracturing components, comprising: a skid frame; and an adjustable assembly mounted on the skid frame, the adjustable assembly comprising, a first structure secured in movable relation to the skid frame, the first structure movable along a first axis, and a second structure secured in movable relation to the skid frame, the second structure movable along a second axis extending generally perpendicular to the first axis.

In Example 2, the subject matter of Example 1 optionally includes at least one first prime mover configured to move the first structure relative to the first axis.

In Example 3, the subject matter of Example 2 optionally includes at least one second prime mover configured to move the second structure relative to the second axis.

In Example 4, the subject matter of any one or more of Examples 2-3 wherein the at least one first prime mover comprises two movers in opposing relation to one another, each mover configured to move the first structure in a respective direction relative to the first axis.

In Example 5, the subject matter of any one or more of Examples 3-4 wherein the at least one second prime mover comprises two movers in opposing relation to one another, each mover configured to move the second structure in a respective direction relative to the second axis.

In Example 6, the subject matter of any one or more of Examples 3-5 wherein the second structure is supported by the first structure; and wherein the at least one second prime mover is supported by the first structure.

Example 7 is a fracturing skid, comprising: a skid frame; an X-Y adjustable supporting structure mounted on the skid frame, the adjustable supporting structure comprising, a first structure secured in movable relation to the skid frame, the first structure movable along a first axis, a second structure supported by the first structure and secured in movable relation to the skid frame, the second structure movable along a second axis generally perpendicular to the first axis, first and second movers secured in fixed relation to the skid frame and on opposing sides of the first structure, and coupled to move the first structure in opposing directions along the first axis, and third and fourth movers secured in fixed relation to the first structure and on opposing sides of the second structure, and coupled to move the second structure in opposing directions along the first axis; and at least one fracturing component coupled to the X-Y adjustable supporting structure.

In Example 8, the subject matter of Example 7 wherein the first and second movers are pneumatic jacks.

In Example 9, the subject matter of any one or more of Examples 7-8 wherein the second structure defines an elevated pedestal to which the at least one fracturing component is bolted.

In Example 10, the subject matter of any one or more of Examples 7-9 wherein the skid frame includes multiple rails extending parallel to the first axis, and wherein the first structure includes multiple guides engaging the rails.

In Example 11, the subject matter of any one or more of Examples 7-10 optionally include a first locking mechanism to selectively secure the first structure in fixed relation relative to the skid frame.

In Example 12, the subject matter of Example 11 wherein the first locking mechanism comprises multiple threaded wedge assemblies operable to engage the skid frame.

In Example 13, the subject matter of any one or more of Examples 7-12 optionally include a second locking mechanism to selectively secure the second structure in fixed relation relative to the first structure.

In Example 14, the subject matter of Example 13 wherein the second locking mechanism comprises multiple threaded fasteners.

In Example 15, the subject matter of Example 14 wherein the multiple threaded fasteners comprise bolts extending through one of at least two tracks in the second structure with nuts operable to threadably secure the second structure in fixed relation to the first structure.

In Example 16, the subject matter of any one or more of Examples 7-15 wherein the at least one fracturing component comprises a connecting block bolted to the second structure.

In Example 17, the subject matter of any one or more of Examples 7-16 wherein the at least one fracturing components comprises at least two components selected from: a connecting block, a manual valve, a hydraulic valve, and a spool.

In Example 18, the subject matter of any one or more of Examples 1-7 include one or more features from any one or more of Examples 7-17.

Example 19 is a fracturing manifold system having a movable fluid path switching assembly, comprising: a connection block coupled to an intake manifold and configured to receive pressurized fracturing fluid from the intake manifold, and further configured to deliver the received pressurized fracturing fluid to a fluid outlet, the connection block comprising a first portion of a first quick disconnect coupling; a distribution block comprising a first portion of a second quick disconnect coupling forming a fluid inlet, and further comprising a fluid outlet; and a movable conduit releasably coupled to the connection block through the first quick disconnect coupling, and coupled to the distribution block through the second quick disconnect coupling, the movable conduit comprising, at a first end, a second portion of the first quick disconnect coupling configured to establish a fluid coupling with the fluid outlet of the connection block; and at a second end, a second portion of the second quick disconnect coupling configured to establish a fluid coupling with the fluid inlet of the distribution block.

In Example 20, the subject matter of Example 19 wherein the first quick disconnect coupling comprises a male/female connector.

In Example 21, the subject matter of Example 20 wherein the first portion of the first quick disconnect coupling is the female portion of the male/female connector and includes a receiving bore; and wherein the second portion of the first quick disconnect coupling comprises a pin connection; and wherein the pin connection is configured to sealingly engage within the receiving bore.

In Example 22, the subject matter of any one or more of Examples 19-21 wherein the second quick disconnect coupling comprises a flush joint connection assembly, wherein the first portion of the second quick disconnect coupling of the distribution block comprises a first connector having a first flat engaging surface, and wherein a second portion of the second quick disconnect coupling comprises a connector having a second flat engaging surface; and wherein the first and second flat engaging surfaces each engage opposing surfaces of a seal structure.

In Example 23, the subject matter of any one or more of Examples 21-22 wherein the second quick disconnect coupling can be released, and the first and second portions of the coupling separated from one another while the pin connection of the first quick disconnect coupling remains at least partially within the receiving bore.

In Example 24, the subject matter of any one or more of Examples 21-23 wherein the receiving bore is in communication with multiple pressure access ports.

In Example 25, the subject matter of Example 24 wherein at least one of the multiple pressure access ports extends to a location between first and second seals on the pin connection, when the first and second portions of the quick disconnect coupling are secured together.

In Example 26, the subject matter of any one or more of Examples 24-25 wherein a first of the multiple pressure access ports extends to a location on a first side of a sealing structure between the pin connection and the receiving bore.

In Example 27, the subject matter of Example 26 wherein a second of the multiple pressure access ports extends to a location on a second side of the sealing structure between the pin connection and the receiving bore.

In Example 28, the subject matter of Example 27 wherein the sealing structure comprises two seals separated by an intermediate area, and wherein a third of the multiple pressure access ports extends to the intermediate area between the two seals.

Example 29 is a multi-well fracturing system, comprising: an intake manifold, including, multiple inlet connections configured for receiving fracturing fluid under pressure and conveying the received fracturing fluid to a fluid outlet during a fracturing operation; a connection block coupled to received pressurized fracturing fluid from the intake manifold, and a moveable conduit coupled to an individual fracturing branch of multiple fracturing branches, wherein each fracturing branch extends to a respective wellhead assembly; wherein each fracturing branch comprises, a distribution block having a fluid inlet configured to selectively couple to the movable conduit to receive the pressurized fracturing fluid, and a wellhead connection assembly coupled a respective wellhead assembly, and configured to receive pressurized fracturing fluid from the distribution block and to convey the pressurized fluid to the wellhead assembly; and wherein the respective distribution blocks of the multiple fracturing branches are placed at a common distance from the fluid outlet of the connection block, whereby the movable conduit can be moved to selectively provide a flow path from the connection block to each of the respective distribution blocks.

In Example 30, the subject matter of Example 29 wherein the movable conduit is rotatable between a first position establishing communication with a first distribution block of a first fracturing branch, and a second position establishing communication with a second distribution block of a second fracturing branch.

In Example 31, the subject matter of any one or more of Examples 29-30 wherein each fracturing branch of the multiple fracturing branches is connected to the intake manifold only when the movable conduit is coupled to the distribution block of the respective fracturing branch.

In Example 32, the subject matter of any one or more of Examples 29-31 wherein the connection block comprises a first portion of a first quick disconnect coupling at the fluid outlet.

In Example 33, the subject matter of Example 32 wherein the distribution block comprises a first portion of a second quick disconnect coupling at the fluid inlet.

In Example 34, the subject matter of any one or more of Examples 29-33 wherein the movable conduit comprises: at a first end, a second portion of the first quick disconnect coupling configured to establish a fluid coupling with the fluid outlet of the connection block; and at a second end, a second portion of the second quick disconnect coupling configured to establish a fluid coupling with the inlet of the distribution block.

Example 35 is a telescoping pin and box pressure connection, comprising: a box connection member defining a receiving bore; and a pin connection configured to sealingly engage the receiving bore through a seal structure supported on the pin connection; wherein the receiving bore is in communication with multiple pressure access ports, wherein a first of the multiple pressure access ports extends to a location on a first side of the sealing structure when the pin connection is fully engaged within the receiving bore, and wherein a second of the multiple pressure access ports extends to a location on a second side of the sealing structure when the pin connection is fully engaged within the receiving bore.

In Example 36, the subject matter of Example 35 wherein the sealing structure comprises first and second seals in spaced relation to one another and separated by an intermediate area, and wherein a third of the multiple pressure access ports extends to a location the intermediate area between the first and second seals, when the pin connection is fully engaged within the receiving bore.

Example 37 is a method of performing a multi-well fracturing operation, comprising: assembling a fracturing system, comprising, placing an intake manifold at a selected location relative to the multiple wells, the intake manifold including multiple inlet connections configured for receiving fracturing fluid under pressure to fluid outlet during a fracturing operation, placing a connection block in fluid connection with the intake manifold to receive pressurized fracturing fluid from the intake manifold, and further configured to deliver the received pressurized fracturing fluid through a fluid outlet through a moveable conduit to an individual fracturing branch of multiple fracturing branches, or in the fluid outlet comprises a first portion of a first quick release connection, assembling multiple fracturing branches, each fracturing branch extending to a respective wellhead assembly at a respective well of the multiple wells; wherein each fracturing branch comprises, a distribution block comprising a fluid outlet, and a fluid inlet including first portion of a second quick release connection; and a wellhead connection assembly coupled a respective wellhead assembly and configured to receive pressurized fracturing fluid from the distribution block fluid outlet and to convey the pressurized fluid to the wellhead assembly; wherein the fluid inlet of each distribution block of the multiple fracturing branches is placed at a common distance from the fluid outlet of the connection block; placing a movable conduit having a first end including a second portion of the first quick release connection and a second end including a second portion of the second quick release connection in engagement with a first selected distribution block of a selected fracturing branch to establish a flow path between the inlet manifold and a first wellhead assembly of a first well; performing a fracturing operation on the first well; after completing the fracturing operation on the first well, disengaging the movable conduit from the first selected distribution block, and moving the movable conduit into engagement with a second selected distribution block of a second selected fracturing branch to establish a flow path between the inlet manifold and a second wellhead assembly of a second well.

Example 38 is a fracturing system, comprising: an intake manifold, including, multiple inlet connections configured for receiving fracturing fluid under pressure to a single outlet during a fracturing operation, a connection block coupled to received pressurized fracturing fluid from the intake manifold, and configured to deliver the received pressurized fracturing fluid through a moveable switching conduit to an individual fracturing branch of multiple fracturing branches, wherein each fracturing branch extends to a respective wellhead assembly; and wherein each fracturing branch comprises, a distribution block mounted on an adjustable assembly of a first adjustable skid, the distribution block configured to selectively couple to the movable switching conduit to receive the pressurized fracturing fluid, and a wellhead connection assembly coupled a wellhead assembly, and configured to receive pressurized fracturing fluid from the distribution block and to convey the pressurized fluid to the wellhead assembly, wherein at least a portion of the wellhead connection assembly is supported on an adjustable assembly of a second adjustable skid; and wherein the first adjustable skid of each of the multiple fracturing branches, is spaced to place an inlet to the distribution block of fracturing branch at a common distance from an outlet of the connection block, whereby the movable conduit can be moved to provide a flow path from the connection block to each of the respective distribution blocks.

In Example 39, the subject matter of Example 38 wherein each of the first and second adjustable skids comprises: multiple rails; an adjustable platform supported by the multiple rails, the adjustable platform movable along multiple axes in a horizontal plane.

In Example 40, the subject matter of Example 39 wherein the adjustable platform of the first and second adjustable skids further comprises: a first structure secured in movable relation to the multiple rails, the first structure movable along a first axis, and a second structure in movable relation to the multiple rails, the second structure movable along a second axis extending generally perpendicular to the first axis.

In Example 41, the subject matter of Example 40 wherein the second structure is supported by the first structure.

In Example 42, the subject matter of Example 41 wherein the distribution block of each fracturing branches coupled to the second structure of the adjustable platform of the respective first skid.

In Example 43, the subject matter of any one or more of Examples 38-42 wherein the connection block is further mounted to a third adjustable skid, the third adjustable skid comprising: multiple rails; and an adjustable platform supported by the multiple rails, the adjustable platform movable along multiple axes in a horizontal plane; and wherein the connection block is supported by the adjustable platform.

Example 44 is a method of assembling a fracturing system for fracturing multiple wells; placing an intake manifold at a selected location relative to the multiple wells, the intake manifold including multiple inlet connections configured for receiving fracturing fluid under pressure to a single outlet during a fracturing operation, placing a first skid having an adjustable platform moveable relative to multiple axes in horizontal plane in a second selected position relative to the intake manifold, the adjustable platform supporting a connection block configured to be coupled to the intake manifold to receive pressurized fracturing fluid from the intake manifold, and further configured to deliver the received pressurized fracturing fluid through an outlet to a moveable switching conduit to an individual fracturing branch of multiple fracturing branches, assembling multiple fracturing branches, each fracturing branch extending to a respective wellhead assembly at a respective well of the multiple wells; wherein each fracturing branch comprises, a distribution block mounted on an adjustable assembly of a second adjustable skid, each respective second adjustable skid comprising, multiple rails, and an adjustable platform supported by the multiple rails, the adjustable platform movable along multiple axes in a horizontal plane, and wherein the second adjustable skid of each of the multiple fracturing branches is placed to place an inlet to the distribution block of fracturing branch at a common distance from the outlet of the connection block, whereby a movable conduit can be moved to provide a flow path from the connection block to each of the respective distribution blocks; assembling a wellhead connection assembly coupled a respective wellhead assembly and configured to receive pressurized fracturing fluid from the distribution block and to convey the pressurized fluid to the wellhead assembly, wherein at least a portion of the wellhead connection assembly is supported on an adjustable assembly of a third adjustable skid, and placing a movable conduit engaging the connection block and a respective distribution block and establishing a fluid flow path between the connection block and the respective distribution block.

In Example 45, the subject matter of Example 44 wherein the connection block fluid outlet comprises a first portion of a first male/female connection assembly configured to engage with the movable conduit.

In Example 46, the subject matter of Example 45 wherein the distribution block fluid inlet comprises a first portion of a second male/female connection assembly configured to engage with the movable conduit.

In Example 47, the subject matter of Example 46 wherein the movable conduit comprises: at a first end a second portion of the first male/female connection assembly, configured to engage with the first portion of the first male/female connection assembly of the connection block; and at a second end, a second portion of the second male/female connection assembly configured to engage with the first portion of the second male/female connection assembly of the distribution block.

Example 48 is a fracturing manifold system having a movable fluid path switching assembly, comprising: a connection block coupled to an intake manifold and configured to receive pressurized fracturing fluid from the intake manifold, and further configured to deliver the received pressurized fracturing fluid to a fluid outlet, comprising a first portion of a first quick disconnect coupling, the connection block supported on an adjustable platform of a first skid, the adjustable platform movable relative to two axes in a horizontal plane; a distribution block comprising a first portion of a second quick disconnect coupling is a fluid inlet, and further comprising a fluid outlet; wherein the distribution block is supported on an adjustable platform of a second skid, the adjustable platform movable relative to two axes in a horizontal plane; and a movable conduit comprising at a first end a second portion of the first quick disconnect coupling and configured to establish a fluid coupling with the outlet of the connection block; and further comprising at a second end a second portion of the second quick disconnect coupling, and configured to establish a fluid coupling with the inlet of the distribution block.

Example 49 is a fracturing system, comprising: an intake manifold, including, multiple inlet connections configured for coupling to conduits extending to pumps, for providing fracturing fluid to the intake manifold, and a fluid outlet configured to communicate fluid from the multiple inlet connections to a single outlet; a connection block including, a fluid inlet coupled through a main conduit to the fluid outlet of the intake manifold, a fluid outlet including a first portion of a first male/female connection assembly; multiple fracturing branches including, a respective distribution block mounted on an adjustable assembly of a respective first skid, the distribution block including, a first portion of a second connection assembly forming a fluid inlet at a first surface, and a fluid outlet on a second surface; a wellhead connection assembly mounted on an adjustable assembly of a respective second skid, the wellhead connection assembly including, a receiving block having an outlet, and an inlet, the inlet coupled to the fluid outlet of the distribution block through a respective first conduit, and a wellhead conduit assembly coupled between the receiving block outlet and an inlet of a respective wellhead tree; a switching conduit coupled between the intake manifold and a respective distribution block of a selected fracturing branch, the switching conduit including, a first end configured to form a second portion of the first male/female connection assembly at the intake manifold, and a second end configured to form a second portion of the second connection assembly at a respective distribution block.

In Example 50, the subject matter of Example 49 wherein each of the multiple first skids of the respective fracturing branches is located and adjusted to place the second portion of the respective second connection assembly at a common distance from the first portion of the first male/female connection assembly of the connection block.

In Example 51, the subject matter of any one or more of Examples 49-50 wherein the each of the multiple first skids of the respective fracturing branches is located at a common radius from the first portion of the first male/female connection assembly of the connection block.

In Example 52, the subject matter of any one or more of Examples 49-51 wherein the second connection assembly comprises a flush joint connection assembly.

In Example 53, any of Examples 19-52 may be constructed with any of the structures identified in other of Examples 19-52.

In Example 54, any of the apparatus of Examples 19-36 may incorporate individual structures of Examples 38-52.

In Example 55 any of the apparatus of Examples 19-39, 38-43 may be used in performing any of the methods of Examples 37 and 40-47.

In Example 56, any of the methods of Examples 37 and 40-47 may be modified to be performed through use of the apparatus of any of Examples 19-39, 38-43, and 48-52.

The above description is intended to be illustrative, and not restrictive. For example, the above-described examples (or one or more aspects thereof) may be used in combination with each other. Other embodiments can be used, such as by one of ordinary skill in the art upon reviewing the above description. Also, in the above Detailed Description, various features may be grouped together to streamline the disclosure. This should not be interpreted as intending that an unclaimed disclosed feature is essential to any claim. Rather, inventive subject matter may lie in less than all features of a particular disclosed embodiment. Thus, the following claims are hereby incorporated into the Detailed Description, with each claim standing on its own as a separate embodiment, and it is contemplated that such embodiments can be combined with each other in various combinations or permutations. The scope of the invention should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.

Claims

1. A fracturing system having a movable fluid path switching assembly, comprising:

a connection block coupled to an intake manifold and configured to receive pressurized fracturing fluid from the intake manifold, and further configured to deliver the received pressurized fracturing fluid to a fluid outlet, the connection block comprising a first portion of a first quick disconnect coupling;

a distribution block comprising a first portion of a second quick disconnect coupling forming a fluid inlet, and further comprising a fluid outlet; and

a movable conduit releasably coupled to the connection block through the first quick disconnect coupling, and coupled to the distribution block through the second quick disconnect coupling, the movable conduit comprising, at a first end, a second portion of the first quick disconnect coupling configured to establish a fluid coupling with the fluid outlet of the connection block; and at a second end, a second portion of the second quick disconnect coupling is configured to establish a fluid coupling with the fluid inlet of the distribution block.

2. The fracturing system of claim 1, wherein the first quick disconnect coupling comprises a male/female connector.

3. The fracturing system of claim 2:

wherein the first portion of the first quick disconnect coupling is the female portion of the male/female connector and includes a receiving bore;

wherein the second portion of the first quick disconnect coupling comprises a pin connection; and

wherein the pin connection is configured to sealingly engage within the receiving bore.

4. The fracturing system of claim 1:

wherein the second quick disconnect coupling comprises a flush joint connection assembly;

wherein the first portion of the second quick disconnect coupling of the distribution block comprises a first connector having a first flat engaging surface and wherein a second portion of the second quick disconnect coupling comprises a connector having a second flat engaging surface; and

wherein the first and second flat engaging surfaces each engage opposing surfaces of a seal structure.

5. The fracturing system of claim 3, wherein the second quick disconnect coupling can be released and the first and second portions of the coupling separated from one another while the pin connection of the first quick disconnect coupling remains at least partially within the receiving bore.

6. The fracturing system of claim 3, wherein the receiving bore is in communication with multiple pressure access ports.

7. The fracturing system of claim 6, wherein at least one of the multiple pressure access ports extends to a location between first and second seals on the pin connection, when the first and second portions of the quick disconnect coupling are secured together.

8. The fracturing system of claim 6, wherein a first of the multiple pressure access ports extends to a location on a first side of a sealing structure between the pin connection and the receiving bore.

9. The fracturing system of claim 8, wherein a second of the multiple pressure access ports extends to a location on a second side of the sealing structure between the pin connection and the receiving bore.

10. The fracturing system of claim 9, wherein the sealing structure comprises two seals separated by an intermediate area, and wherein a third of the multiple pressure access ports extends to the intermediate area between the two seals.

11. A multi-well fracturing system, comprising:

an intake manifold, including, multiple inlet connections configured for receiving fracturing fluid under pressure and conveying the received fracturing fluid to a fluid outlet during a fracturing operation;

a connection block coupled to received pressurized fracturing fluid from the intake manifold, and

a moveable conduit coupled to an individual fracturing branch of multiple fracturing branches, wherein each fracturing branch extends to a respective wellhead assembly;

wherein each fracturing branch comprises, a distribution block having a fluid inlet configured to selectively couple to the movable conduit to receive the pressurized fracturing fluid, and a wellhead connection assembly coupled a respective wellhead assembly, and configured to receive pressurized fracturing fluid from the distribution block and to convey the pressurized fluid to the wellhead assembly; and

wherein the respective distribution blocks of the multiple fracturing branches are placed at a common distance from the fluid outlet of the connection block, whereby the moveable conduit can be moved to selectively provide a flow path from the connection block to each of the respective distribution blocks.

12. The multi-well fracturing system of claim 11, wherein the movable conduit is rotatable between a first position establishing communication with a first distribution block of a first fracturing branch, and a second position establishing communication with a second distribution block of a second fracturing branch.

13. The multi-well fracturing system of claim 11, wherein each fracturing branch of the multiple fracturing branches is connected to the intake manifold only when the movable conduit is coupled to the distribution block of the respective fracturing branch.

14. The multi-well fracturing system of claim 11, wherein the connection block comprises a first portion of a first quick disconnect coupling at the fluid outlet.

15. The multi-well fracturing system of claim 14, wherein the distribution block comprises a first portion of a second quick disconnect coupling at the fluid inlet.

16. The multi-well fracturing system of claim 11, wherein the movable conduit comprises:

at a first end, a second portion of the first quick disconnect coupling configured to establish a fluid coupling with the fluid outlet of the connection block; and

at a second end, a second portion of the second quick disconnect coupling configured to establish a fluid coupling with the inlet of the distribution block.

17. A telescoping pin and box pressure connection, comprising:

a box connection member defining a receiving bore; and

a pin connection configured to sealingly engage the receiving bore through a seal structure supported on the pin connection;

wherein the receiving bore is in communication with multiple pressure access ports, wherein a first of the multiple pressure access ports extends to a location on a first side of the sealing structure when the pin connection is fully engaged within the receiving bore, and wherein a second of the multiple pressure access ports extends to a location on a second side of the sealing structure when the pin connection is fully engaged within the receiving bore.

18. The telescoping pin and box pressure connection of claim 17, wherein the sealing structure comprises first and second seals in spaced relation to one another and separated by an intermediate area, and wherein a third of the multiple pressure access ports extends to a location adjacent the intermediate area between the first and second seals, when the pin connection is fully engaged within the receiving bore.

19. A method of performing a multi-well fracturing operation, comprising:

assembling a fracturing system, comprising, placing an intake manifold at a selected location relative to multiple wells, the intake manifold including multiple inlet connections configured for receiving fracturing fluid under pressure to fluid outlet during a fracturing operation, placing a connection block in fluid connection with the intake manifold to receive pressurized fracturing fluid from the intake manifold, and further configured to deliver the received pressurized fracturing fluid through a fluid outlet through a moveable conduit to an individual fracturing branch of multiple fracturing branches, or in the fluid outlet comprises a first portion of a first quick release connection, assembling multiple fracturing branches, each fracturing branch extending to a respective wellhead assembly at a respective well of the multiple wells; wherein each fracturing branch comprises, a distribution block comprising a fluid outlet, and a fluid inlet including first portion of a second quick release connection; and a wellhead connection assembly coupled a respective wellhead assembly and configured to receive pressurized fracturing fluid from the distribution block fluid outlet and to convey the pressurized fluid to the wellhead assembly; wherein the fluid inlet of each distribution block of the multiple fracturing branches is placed at a common distance from the fluid outlet of the connection block;

placing a movable conduit having a first end including a second portion of the first quick release connection and a second end including a second portion of the second quick release connection in engagement with a first selected distribution block of a selected fracturing branch to establish a flow path between the inlet manifold and a first wellhead assembly of a first well;

performing a fracturing operation on the first well; and

after completing the fracturing operation on the first well, disengaging the movable conduit from the first selected distribution block, and moving the movable conduit into engagement with a second selected distribution block of a second selected fracturing branch to establish a flow path between the inlet manifold and a second wellhead assembly of a second well.

20. A fracturing skid configured to support one or more fracturing components, comprising:

a skid frame; and

an adjustable assembly mounted on the skid frame, the adjustable assembly comprising, a first structure secured in movable relation to the skid frame, the first structure movable along a first axis, and a second structure secured in movable relation to the skid frame, the second structure movable along a second axis extending generally perpendicular to the first axis.

21. The fracturing skid of claim 20, further comprising at least one first prime mover configured to move the first structure relative to the first axis.

22. The fracturing skid of claim 21, further comprising at least one second prime mover configured to move the second structure relative to the second axis.

23. The fracturing skid of claim 21, wherein the at least one first prime mover comprises two movers in opposing relation to one another, each mover configured to move the first structure in a respective direction relative to the first axis.

24. The fracturing skid of claim 22, wherein the at least one second prime mover comprises two movers in opposing relation to one another, each mover configured to move the second structure in a respective direction relative to the second axis.

25. The fracturing skid of claim 22, wherein the second structure is supported by the first structure; and wherein the at least one second prime mover is supported by the first structure.