Abstract: Methods and systems for performing injection treatments in subterranean formations stimulated by the ignition of propellants are provided. In some embodiments, the methods comprise: igniting a propellant in one or more secondary boreholes in a subterranean formation to at least partially rupture at least a region of the subterranean formation near the secondary boreholes; introducing a fracturing fluid into a first production well bore in the subterranean formation in or near the ruptured region of the subterranean formation at or above a pressure sufficient to create or enhance at least a primary fracture in the subterranean formation that extends into at least a portion of the ruptured region of the subterranean formation; and introducing a displacement fluid into one or more of the secondary boreholes or an injection well bore in the subterranean formation that comprises one or more fractures penetrating the ruptured region of the subterranean formation.

Abstract: A modular multiport pod missile includes a plurality of pipe sections securable together to form a conduit for transporting a fluid in a generally horizontal direction of travel, and at least one pod secured between two of the pipe sections forming the conduit. Each pod has a plurality of input ports extending radially outwardly at an angle from a perimeter of the pod. Each of the input ports is configured for connection to a high-pressure line for delivering a high-pressure fluid from a pump to the conduit. The input ports are angled such that, when connected to a high-pressure line, high-pressure fluid flowing through the input ports merges with the fluid in the conduit generally in the same direction of travel as the fluid in the conduit.

Abstract: A modular fracing wellhead extension for use in a fracing system for enabling the connection of wells on a well pad that are out of reach of an articulated connection platform. The extension modules use the same connection interface as deployed on the wellheads in reach of the articulated connection platform so that an uninterrupted fracing operation can be carried out on two or more wells even if some of the wells are not within the usual reach of the articulated connection platform.

Abstract: System and methods of controlling diverter placement during stimulation treatments are provided. Data relating to at least one downhole parameter is obtained for a current treatment stage within a subsurface formation. A response of the diverter to be injected during a diversion phase of the current stage on the downhole parameter is estimated, based on the obtained data and a diagnostic data model. Values for diversion control parameters are calculated, based on the estimated response. As the diverter is injected into the formation, an actual response of the diverter is monitored. Upon determining that a difference between the actual and estimated response exceeds an error tolerance threshold, the model is updated. The model is further updated over subsequent iterations of the diversion phase when the actual response is less than the estimated response. Subsequent diversion phases are performed over a remainder of the current stage, based on the updated model.

Abstract: Disclosed are a measurement-while-drilling method and device for obtaining a coal seam gas parameter applicable to measurement of a coal seam gas/coal seam methane parameter while drilling and evaluation of gas drainage performance. The invention performs a measurement-while-drilling operation to obtain information about downhole gas and a coal seam, thereby realizing on-site measurement of a coal seam gas parameter while drilling. The measurement-while-drilling device for obtaining a coal seam gas parameter comprises a compartment (17), a pressure sensor (15), a temperature sensor (14), a flow sensor (4), an acoustic emission sensor (16), a monitoring and control module (11), a power module and a communication module. The device is installed between a drill bit (1) and a first drill pipe (20).

Abstract: A lateral wellbore access system is used for moving an isolation sleeve relative to a window of a completion sleeve to adjust access through the window. The system includes an actuator having an isolation sleeve coupling mechanism and a driving mechanism. The isolation sleeve coupling mechanism is configured to engage with an isolation sleeve. The driving mechanism is configured to longitudinally reciprocate the isolation sleeve coupling mechanism within a bore of a completion sleeve to longitudinally move an isolation sleeve coupled to the isolation sleeve coupling mechanism within the bore relative to a window of the completion sleeve. Movement of the isolation sleeve adjusts a position of the isolation sleeve relative to the completion sleeve window for permitting or blocking access through the window into the bore.

Abstract: A lateral wellbore access system is used for moving an isolation sleeve relative to a window of a completion sleeve to adjust access through the window. The system includes an actuator having an isolation sleeve engagement mechanism and a driving mechanism. The isolation sleeve engagement mechanism is configured to engage with an isolation sleeve. The driving mechanism is configured to longitudinally reciprocate the isolation sleeve relative to the isolation sleeve engagement mechanism within a bore of a completion sleeve to longitudinally move an isolation sleeve within the bore relative to a window of the completion sleeve. Movement of the isolation sleeve adjusts a position of the isolation sleeve relative to the completion sleeve window for permitting or blocking access through the window into the bore.

Abstract: An apparatus or a well tool for testing a blowout preventer (BOP) on a surface wellhead. The apparatus includes a sacrificial wellhead adapter, a top locking mechanism adapted to lock the adapter to a BOP riser, and a bottom locking mechanism adapted to lock the adapter to a permanent tubing or casing spool of the surface wellhead. The apparatus further includes a plurality of lock down screws configured to be activated as a load ring. The sacrificial wellhead adapter further comprises a first profile for accommodating a test plug load ring, and a sealing profile for a test plug. The apparatus further includes a test plug with an activated load shoulder. The test plug is activated externally by energizing the lock down screws. The apparatus further includes a load ring configured to lock the test plug in place.

Abstract: A frac zipper manifold bridge connector comprises two bridge spools for connecting a well configuration unit of a frac zipper manifold to a frac tree of a wellhead. The connector comprises multiple connections involving threaded flanges, such that the orientation of the bridge spools may be adjusted to ensure that they are correctly aligned with the frac tree. The bridge connector further comprises one or more flow diverters to decrease turbulence and reduce erosion.

Abstract: A straddle packer for proppant-laden fracturing fluids has a slotted frac sub with a proppant filtration plug body that excludes proppant in the fracturing fluid from a central passage of the straddle packer downhole from the slotted frac hub. Pressure equalization sleeve filters exclude an entry of debris in a well bore through pressure equalization ports of the straddle packer.

Abstract: A missile flow line is assembled in a frac manifold to manifold the discharge from a plurality of pumps. The missile comprises at least two junction fittings joined by a flange union to at least one spooled pipe to form a conduit. The junction fittings comprise a fitting body having a primary bore and at least two feed bores. The primary bore extends axially through the body between primary union faces adapted for connection to a flowline component by a flange union. The feed bores extend radially through the body from a feed union face to an intersection with the primary bore. The feed union faces are adapted for connection to pump discharge lines by a flange union. The intersections of the feed bores with the primary bore are offset axially from each other along the primary bore.

Abstract: The present invention relates to burst port subs (BPS) 120 allowing for a tubing 100 or a liner 200 or a casing 200 in a borehole 300 to be opened at a predetermined pressure and further providing a delayed opening sequence due to a dissolvable barrier 400, 500 arranged in a port 440, 540 of the sub 120. The present invention relates further to a downhole system comprising a predetermined number of such burst port subs (BPS) 120.

Abstract: Missile flow lines are incorporated into frac manifolds, especially trailered or skidded frac manifolds. The missiles manifold the discharge from a plurality of pumps and comprise at least two junction fittings joined by spooled pipe. The junction fittings comprise a body having a primary bore and at least two feed bores. The intersections of the feed bores with the primary bore are offset axially from each other along the primary bore. The junction fittings are joined by flange unions to at least one spooled pipe such that the junction fittings and spooled pipe form a conduit including the primary bores. A discharge line from a pump may be joined to each feed union face of the junction fittings by a flange union. Thus, the discharge from the pumps may be manifolded into the conduit.

Abstract: The present invention discloses a hydraulically-driven double-acting mud pump, comprising power motors, pressure oil pumps, a three-position four-way hydraulically-actuated directional valve, a hydraulic power end and a mud pump head, the power motors being connected to the pressure oil pumps in a conventional way, the pressure oil pumps being communicated with a port P of the three-position four-way hydraulically-actuated directional valve via a pipeline, a port T of the three-position four-way hydraulically-actuated directional valve being communicated with an oil tank via a pipeline, a port A and a port B of the three-position four-way hydraulically-actuated directional valve being both connected to the hydraulic power end, the hydraulic power end being connected to the mud pump head in a conventional way, a lower end of the mud pump head being communicated with a low-pressure manifold and two sides of the mud pump head being communicated with a high-pressure manifold.

Abstract: The present disclosure relates to downhole tools, including downhole valves, which actuate via a pressure differential created across a shifting element having one or more pressure surfaces isolated from fluid, and fluid pressure, flowing through the interior flowpath. Embodiment downhole tools of the present disclosure may actuate in response to, among other signals, fluid pressure in the interior flowpath of the tool and fluid pressure communicated to a pressure surface of the shifting sleeve from the exterior of the tool. Certain embodiments may also have an outlet connector whereby fluid pressure from the downhole tool may be communicated to its exterior. Isolation of the shifting element from the interior flowpath may be accomplished using a frangible, shiftable, degradable or other members which may be moved from a closed state to an open state in response to fluid conditions in the interior flowpath.

Abstract: A circulation sub including a tubular and a diverter valve are configured to continuously circulate fluid into a drill string. The tubular has a first end connectable to the drill string, a second end connectable to a pipe segment, and a port. The tubular has a fluid path for allowing the fluid to flow from the pipe segment to the drill string and a circulation path for allowing the fluid to flow from the port to the drill string. The diverter valve has a channel in selective fluid communication with the fluid path. The diverter valve is positionable between a flow through position for selectively allowing the fluid to flow through the fluid path and a diversion position for selectively allowing the fluid to flow through the circulation path whereby the fluid may continuously flow through the drill string.

Abstract: The present invention concerns a feedback control method for adjusting the proppant concentration in a fracturing fluid that is utilized in stimulation of an underground formation.

Abstract: The invention discloses a pipeline descaling and rock stratum fracturing device based on electro-hydraulic pulse shock waves, comprising a ground low-voltage control device, a transmission cable and an electro-hydraulic pulse shock wave transmitter.

Abstract: A system for use in treating a wellbore may include a tubular string deployed in the wellbore; and at least one valve assembly connected to the tubular string, each valve assembly for establishing communication between the tubular string and a formation zone, the at least one valve assembly comprises a sleeve having at least one fluid port therein that expands in an axial direction when the valve assembly opens to form a flowpath between an interior of the tubular string and the formation zone.

Abstract: A method of monitoring hydraulic fracturing using DAS sensors in a treatment well and/or observation well is described. The raw data is transformed using a low pass filter (?0.05 Hz) and down-sampled to show the signal as the stimulation progresses. The resulting data can be used to optimize the hydraulic fracturing or improve reservoir models for other reservoirs.

Abstract: A method comprising: introducing into a fracture within a subterranean formation a first treatment fluid comprising uncoated first proppant particulates; introducing into the fracture a second treatment fluid comprising non-hardenable coated second proppant particulates to form a proppant pack; and introducing into the fracture a third treatment fluid comprising hardenable coated third proppant particulates intermittently between a spacer fluid to form pillars.

Abstract: The present invention discloses a hydraulic double-acting fracturing pump skid, comprising a skid chassis, power motors, oil pumps, a hydraulic power end and fluid ends; the power motors and the oil pumps are arranged at two ends of the skid chassis, the hydraulic power end is arranged in the middle of the skid chassis, and the fluid ends are arranged on two sides of the hydraulic power end; the power motors are connected to the oil pumps via a transmission mechanism, the oil pumps are communicated with the hydraulic power end via a three-position four-way directional valve and can drive the hydraulic power end to operate, the hydraulic power end is connected to the hydraulic power in a transmission way, and a lower end of the fluid ends is communicated with a low-pressure manifold and two sides of the fluid ends are respectively communicated with a high-pressure manifold.

Abstract: The present disclosure is directed to a composition and method of fracturing a formation penetrated by a well-bore. The composition and method comprises providing a fracturing fluid that is liquefied carbon dioxide (LCO2) with at least one friction reducing polymer that is a polysiloxane dissolved in the LCO2 at a concentration of about 0.001 to 1.0 weight percent, and a first at least one co-solvent, and optionally a second at least one co-solvent that has a closed cup flash point greater than the first at least one co-solvent, in order to enable dissolution of the polymer in order to effect friction reduction.

Abstract: A valve for inclusion or insertion in a tubular includes a substantially cylindrical outer valve housing; an inner sliding sleeve mounted axially movable inside the valve housing; and a seat arranged for receiving a drop ball, dart or falling device. The seat is built in such a way that it can partially or completely be removed or drilled out from the valve. The inner sliding sleeve includes a first profile arranged at a first end of the inner sliding sleeve and a second profile arranged at a second end of the inner sliding sleeve, wherein the first profile and the second profile are configured to be engaged with an activating or shifting tool inserted and run in the tubular after the seat has been partially or completely removed or drilled out from the valve in order to operate the valve from an open to a closed position and/or vice versa.

Abstract: Systems and methods that use far-field diverting agents and proppant pulsing to enhance fracture geometries in far field areas of a subterranean formation are provided. In one embodiment, the methods comprise: introducing into a well bore penetrating a portion of a subterranean formation alternating stages of a proppant-carrying fracturing fluid comprising a plurality of proppant particulates, and a clean fracturing fluid comprising a lesser concentration of proppant particulates than the proppant-carrying fracturing fluid, wherein the alternating stages of the proppant-carrying fracturing fluid and the clean fracturing fluid are introduced into the well bore at or above a pressure sufficient to create or enhance one or more fractures in the subterranean formation; and introducing a diverting agent into the well bore during one or more of the alternating stages of proppant-carrying fracturing fluid and clean fracturing fluid.

Abstract: A sleeve apparatus having a longitudinal axis and an interior further includes a tubular having a plurality of ports providing a length of fluidic access between the interior and an exterior of the tubular, the length measured with respect to the longitudinal axis; and, a sleeve disposed within the tubular and configured to move longitudinally with respect to the longitudinal axis. The sleeve further has a plurality of apertures misaligned with the plurality of ports in a closed condition of the sleeve apparatus and at least substantially aligned with the plurality of ports in a fully open condition of the sleeve apparatus, and a plurality of non-apertured sections aligned with the plurality of ports in the closed condition. A longitudinal shifting distance of the sleeve to move the sleeve apparatus from the closed condition to the fully open condition is less than the length of fluidic access.

Abstract: The present invention relates to a proppant laden fracture fluid having a Mitchell quality of at least 50% and fracturing a subterranean formation therewith.

Abstract: A method and an associated system for in-situ decontamination of a contaminated soil region (2) which contains degradable pollutants, in which a fluid substance is introduced into the soil (1) using an injection device (4, 4?), wherein the fluid substance is introduced into the soil using a pressure injection method in a pressure-controlled manner and/or with an injection device that has a valve pipe with a pressure-controlled outlet valve.

Abstract: A method of performing an oilfield operation about a wellbore penetrating a subterranean formation. The method involves performing a fracture operation comprising injecting fluid into the formation and generating fractures about the wellbore. The fractures form a fracture network about the wellbore. The method further involves collecting during the performing data comprising injection temperature and pressure, generating a fluid distribution through the fracture network by performing real time simulations of the fracture network based on the collected data (the fluid distribution comprising temperature distribution), and performing a production operation comprising generating production based on the temperature distribution.

Abstract: A tool for influencing electrically conductive paths using ferrofluids in a downhole system. The downhole system can include a tool body, a source of ferrofluid, and a magnet. The magnet can provide a magnetic field that influences an electrically conductive path within an annulus between the tool body and a wellbore formation by arranging the ferrofluid from the source in the annulus.

Abstract: A downhole energy transmission system is described. The system can include a casing string having a number of casing pipe disposed within a wellbore, where the casing string has at least one wall forming a cavity. The system can also include a remote electrical device disposed within the cavity of the casing string at a first location. The system can further include a first stripline cable disposed on an outer surface of the casing string, where the first stripline cable transmits a first energy received from an energy source. The system can also include a second stripline cable disposed adjacent to the first stripline cable at the first location, where the second stripline cable is electrically coupled to the remote electrical device.

Abstract: A plug for sealing a well in oil and gas recovery operations, and a method of removing the plug from the well is provided. The method is an erosion method of dislodging the plug from the wellbore, and the plug is designed so as to better be removed through erosion. The plug includes a jetting component to direct an abrasive fluid during the erosion method.

Abstract: A series of independently operated chokes, using a shift tool in registry with a profile discrete to each choke, have a tubular valve member that aligns or misaligns openings for the fully open or closed positions for the choke and for intermediate positions as the valve opens or closes. The valve member is actuated axially using a reversing screw and a j-slot. A shifting tool latches a unique profile to operate the j-slot to cause a sleeve to rotate in place. The sleeve has a pin in registry with a profile on a profile shaft. The profile shaft can move axially in opposite direction but is restrained against rotation. The profile is shaped so that continuous j-slot operation causes the registered pin to move in the profile to then axially drive the profile shaft which is connected to the valve member.

Abstract: A method for automatic tuning of a reference model for a fracking rig pump is provided. The method includes determining, at a processor connected to a fracking rig pump, a current choke area associated with the fracking rig pump based upon at least a maximum power and a maximum pressure obtained from the fracking rig pump for a pump speed of the fracking rig pump, obtaining a pump power and a pump pressure for the current choke area based upon at least a reference model for the fracking rig pump stored in a memory device coupled to the processor, determining a pressure difference between the maximum pressure obtained from the fracking rig pump and the pump pressure, determining a power difference between the maximum power obtained from the fracking rig pump and the pump power obtained from the reference model, and providing an updated choke area to the reference model.

Abstract: An apparatus for fluid treatment of a borehole, the apparatus allowing initial outflow injection of fluids into a wellbore in which it is installed and then is actuable to allow fluid inflow control.

Abstract: A modular fracturing system including a fracturing fluid manifold and a skid apparatus coupled in fluid communication with the fracturing fluid manifold and only one fracturing tree. The skid apparatus can include an inlet coupled to the fracturing fluid manifold, a single outlet coupled to the one fracturing tree via a fluid conduit, and a valve between the inlet and the single outlet to control flow of fracturing fluid from the fracturing fluid manifold through the skid apparatus to the one fracturing tree.

Abstract: A limited entry perforating phased gun system and method for accurate perforation in a deviated/horizontal wellbore is disclosed. The system/method includes a gun string assembly (GSA) deployed in a wellbore with shaped charge clusters. The charges are spaced and angled such that, when perforated, they intersect at a preferred fracturing plane. Upon fracturing, the fractures initiate at least principal stress location in a preferred fracturing plane perpendicular to the wellbore from an upward and downward location of the wellbore. Thereafter, the fractures connect radially about the wellbore in the preferred fracturing plane. The fracture treatment in the preferred fracturing plane creates minimal tortuosity paths for longer extension of fractures that enables efficient oil and gas flow rates during production.

Abstract: A method for determining along relatively uniformly spaced apart parallel first and second wellbores situated in an underground hydrocarbon-containing formation, regions within the formation, including in particular regions between such wellbores, to inject a fluid at a pressure above formation dilation pressure, to stimulate production of oil into the second of the two wellbores, and subsequently injecting fluid at pressures above formation dilation pressures at the discrete regions along such wellbores determined to be in need. An initial information-gathering procedure is conducted, wherein fluid is supplied under a pressure less than formation dilation or fracture pressure, to discrete intervals along a first wellbore, and sensors in the second wellbore measure and data is recorded regarding the ease of penetration of such fluid into the various regions of the formation intermediate the two wellbores.

Abstract: A well with existing perforations is re-fractured by positioning isolators at locations offset from the existing perforations and perforating through those isolators. The isolators are part of a bottom hole assembly that can be delivered on coiled or rigid tubing. The initial fractures can be straddled by the isolators with no mandrel openings between them to effectively isolate the existing perforations as new perforations take place through the isolators. The elements of the isolators can have internal gaps to allow for axial shifting after perforation that is thermally induced. The gaps assure remaining alignment with the new perforations despite some axial shifting. The bottom hole assembly can alternatively have an anchor to resist thermally induced forces that can cause axial shifting.

Abstract: This disclosure is related to a perforator tool and a method of using the perforator tool to perforate a formation. The perforator tool can include a first and second sleeve and optionally a third sleeve. The perforator tool can also include at least one perforation opening and at least one circulation port. The sleeves are slidably disposed within the perforator tool and can be displaced to permit perforation of the formation, block the perforation openings and open circulation ports.

Abstract: Systems and methods describe a frac sleeve with an expandable ball seat. More specifically, the systems and methods include an expandable ball seat within a frac sleeve configured to allow a single frac-ball to treat a plurality of zones associated with a plurality of frac sleeves.

Abstract: Fractures are induced from lobe shaped inflatable members disposed at different axial locations along a string with frac ports in the circumferential gaps between the lobes. The lobes are inflated by landing a ball on a seat on a sleeve that is initially shifted enough to expose a fill port on each lobe. The lobes are inflated to a pressure that initiates fractures in the formation as the lobes extend. Further raising the pressure induces the sleeve to move a second time to open frac ports. The annulus can be cemented and fracturing can penetrate the cement to further propagate the initiated fractures from lobe inflation. The process is repeated at different levels until the zone of interest is completed. Sensors can relay information by telemetry techniques as to the onset of fractures or other well conditions. The sleeve for the frac ports can be moved in a variety of ways without intervention tools.

Abstract: A tool for use in initiating a hydraulic fracture in a bore hole comprises an elongate cylindrical bore hole packer structure (11) having an inner longitudinal passage (12), a mid-portion (13) provided with ports (14) extending outwardly from passage (12) to the exterior periphery of the packer structure (11) and expandable circumferential well portions (15A) surrounding the inner longitudinal passage (12) to each side of the mid-portion (13). In use of the tool the circumferential wall portions (15A) can be expanded by injection of hydraulic fracturing fluid into passage 12) and exit of the injected fluid through the ports (14) to produce a pressure difference between the inside of the packer structure and the outside of the packer structure as the fluid passes through the ports (14) such that the hydraulic fluid exiting the packer structure can initiate a fracture.

Abstract: A wellhead assembly is provided. In one embodiment, the wellhead assembly includes a universal frac sleeve assembly for isolating portions of a wellhead assembly from pressurized fracing fluid. The universal frac sleeve assembly may include an inner sleeve, an outer sleeve, and a seal. Axial movement of the inner sleeve relative to the outer sleeve causes the seal to expand radially, thereby forming a seal within the wellhead assembly.

Abstract: A valve includes a tubular having at least one port, and a sleeve in operable communication with the tubular configured to uncover the at least one port in response to moving from a first position to a second position. The valve also has a seat that is configured to be passed a selected number of times without shifting the sleeve from the first position to the second position and is further configured to be passed one additional time after the selected number of times after shifting the sleeve from the first position to the second position.

Abstract: A fracturing operation is done in open hole without annular space isolation. The annular space is spanned by extendable members that are located behind isolation valves. The extendable members can comprise a biodegradable plug that allows extension of the extendable members by application of pressure. With the plug remained in place, additional pressure can be delivered until at least a portion of the degradable material is pushed onto the surface of the formation. At least a portion of the pushed degradable material provides a seal between the end of the extendable members and the surface of the formation to allow pressure to build until the formation frac gradient is exceeded and the formation is fraced.

Abstract: A method of gravel packing comprises passing a slurry through a first shunt tube, passing the slurry through a coupling, and disposing the slurry about a well screen assembly below the coupling. The first shunt tube comprises a first cross-sectional shape along its length, and the coupling comprises a coupling between the first shunt tube and a jumper tube. The jumper tube comprises a substantially round cross-section at the coupling.

Abstract: The system and method for hydraulic fracturing includes a downhole tool with a sub, a sleeve, a ball seat support, and a ball seat holder. A ball dropped through the wellbore sits on the ball interface of the ball seat holder. Fluid flowing through the system pushes the ball against the ball interface, causing the ball seat holder to slide through the ball seat support and the ball interface to clamp the ball. A ball matches only a particular ball interface. Additional pressure forms a seal of the ball, the ball seat holder, and the ball seat support and moves the sleeve to slide through the sub and expose the throughbore to the annulus for the fracturing. Contact distributed between the ball, ball interface of the ball seat holder, and ball seat support withstands the temperature and pressure of the fracturing without deformation or failure of the ball.

Abstract: A downhole tool for treating a zone adjacent a wellbore, comprising a body having at least two separable portions, the portions operable to open and close a fluid path through the tool, and at least one manipulator, like a spring-loaded finger, to establish a fluid path between an interior and exterior of the wellbore, thereby permitting a zone adjacent the wellbore to be treated. In another embodiment a method is disclosed for treating a zone of interest adjacent a wellbore.

Abstract: A material to be used for hydraulic fracturing, comprising argon maintained as a supercritical fluid, and a proppant. The material may also include any one of a variety of gels, foaming agents, and/or gases. The material may be used in a system to recover resources from bedrock, the system comprising the fracturing material, at least one mixer, a pump to inject the material into a bore well, and a recovery unit to recover the resource from the well. The material and system may be used in a variety of methods for extracting resources from bedrock, the method including mixing the proppant with the supercritical argon to form a mixture, pumping the mixture into a bore well, and recovering the resource from the bore well. Additionally, the material and bore well may comprise a structure used in the extraction of resources from bedrock.