Abstract: An assembly for formation and completion of deviated wellbores is disclosed which includes a toolguide and a casing section which can be used together or separately. The toolguide includes a lower orienting section and a whipstock having a sloping face, commonly known as the directional portion of a whipstock. The toolguide is coated with a material such as epoxy or polyurethane to provide a repairable surface and one which can be removed to facilitate removal of the toolguide from the well bore. The lower orienting section has a latch which extends radially outwardly from the section and can be locked in the outwardly biased position.

Abstract: The hydraulic drilling method and system uses a tube bending tool attached at the down hole end of a pipe or stringer to direct a fluid tube in a generally horizontal direction from a generally vertical gas or oil well. The bending tool is attached to a compression set tubing anchor, lowered into the well at the end of a pipe or stringer and anchored at the desired depth in the conventional manner. A fluid tube having a jet nozzle end is lowered to the bending tool and slidably inserted in a bending channel therein. Hydraulic cutting fluid under pressure is then applied to the pipe and fluid tube to urge the fluid tube through the bending tool to exit horizontally for boring a drain hole in the surrounding underground formation. Once the drain hole is formed the fluid tube is removed. Additional drain holes may be formed by rotating the bending tool radially in the well and inserting a new fluid tube with jet nozzle then repeating the cutting fluid drilling.

Abstract: A method and apparatus for simultaneously producing fluid from one or more zones of an oil or gas well, while injecting fluid into one or more other zones of the well, and for converting a depleted production zone into an injection zone, by remotely shifting sleeves in the apparatus to selectively align inlet and outlet ports with production and injection flow paths, respectively. A production string is provided within a completion string; the completion string has inlet and outlet ports to the well bore. One or more production sleeves have production conduits which can be selectively aligned with inlet ports by shifting the production sleeves. One or more injection sleeves have injection conduits which can be selectively aligned with outlet ports by shifting the injection sleeves.

Abstract: A junction for the intersection of a main borehole and a lateral borehole includes a main tubular having a main window with a ramp aligned with the main window and a lateral tubular adapted to be telescopingly received within the main tubular and having a lateral window. The main tubular and lateral tubular each have an orientation surface. The lateral tubular has a first position with one end partially disposed within the main tubular. The lateral tubular is telescoped into the main tubular with the end of the lateral tubular engaging the ramp which guides the end of the lateral tubular through the main window and into the lateral bore. The orientation surfaces engage to orient the lateral window with the main window and form a common opening between the tubulars.

Abstract: A system and method are disclosed for forming and reentering multiple lateral wells through a wall of a common well bore. The system includes an anchor, an orienting member, an extension member, a diverter and a probe releasably connected by one or more unilateral connections and a multilateral connection. The unilateral connection restricts rotational and translational movement of the system upon makeup, and maintains alignment between components thus joined in a single direction. The multilateral connection also restricts rotational and translational movement of the system upon makeup, however, enables alignment between components thus joined in multiple directions. Thus, use of the system enables lateral orientation of the diverter at multiple positions, positioning the diverter at multiple longitudinal positions and selective reentry of each lateral well formed.

Abstract: Enhanced horizontal drilling systems and methods encompass the production of crude oil from wells drilled from a subterranean production facility. This approach has the location of the well head below the oil reservoir to improve flow rate and recovery due to the consistent voiding of fluids by gravity flow within the well bore to the well head allowing well bore production pressure to achieve extremely low fluid pressure or even a vacuum of up to 15 PSI. This method increases oil recovery rate and factor, and lowers production costs. The present method is production of shallow crude oil by way of long horizontal or near horizontal boreholes drilled and serviced from a subsurface workroom. The subsurface workroom serves as both the drilling platform and the place to which production is centrally accumulated from the wells. Oil is collected in a central facility and is then lifted to the surface utilizing pumps.

Abstract: Method and apparatus for producing multiple zones from a single wellbore wherein a hollow whipstock is used to complete a lateral into an upper zone which lies above a lower producing zone. The whipstock has openings through its tapered face which, in turn, are sealed by dissolvable plugs (e.g. aluminum). Once the lateral has been completed, a reagent (e.g. hydrochloric acid) is pumped down the wellbore to dissolve the plugs and open the openings through the face of the whipstock thereby allowing the flow from the lower zone to pass through the whipstock to be produced up through the wellbore along with the flow from the upper production zone.

Abstract: A system and method for preventing blowouts during the deployment of a casing string into a wellbore. The system includes securing a casing coupling to a casing string and securing a retrievable check valve within the casing coupling. The retrievable check valve allows fluid from the surface to be pumped through the retrievable check valve. However, the retrievable check valve prevents upward fluid flow from the wellbore through the retrievable check valve to the surface.

Abstract: A method and apparatus for forcing drainage devices through the sidewall of a borehole and into the formation to increase oil and gas recovery from the formation. The object usually comprises a plurality of drainage devices, which may be a plurality of nesting discs perforated to provide a passageway for recovery fluid. The discs and drainage device are forced non-drillingly through the side wall and into the formation. The apparatus and method also may be used with interconnected links instead of discs to push a core sampler into the formation and retrieve it. The housing includes a guide channel that is usually an angled passageway or tube. The discs or links are sized to be received in the guide. The apparatus includes a propulsion assembly that impacts the discs or links that act as an anvil assembly. Alternatively, the apparatus takes the form of a pre-loaded casing section, that is, a casing section in which a plurality of drainage devices have been incorporated.

Abstract: The present invention provides an apparatus for completing and producing from multiple mineral production zones, independently and in several combinations. This is made possible only through the use of pressure-actuated circulating (PAC) valves and pressure-actuated device (PAD) valves in combination with isolation valves. Also disclosed are methods of completing and producing from multiple mineral zones.

Abstract: An apparatus for connecting a main casing section to a lateral casing section using thermoset plastic molding. The apparatus is used to set a flexible sock made of a hardenable material at a location adjacent to an intersection between the main and lateral casing sections. The sock is inflated so that it conforms to the inner surfaces of the main and lateral casing sections. Heat is applied to the hardenable material so that the sock is cured in the inflated, operating position. Heat may be applied by releasing chemicals which provide an exothermic reaction and/or by using a heater positioned within the sock.

Abstract: A combined casing mill and whipstock or other exit guide is positioned in a drill string assembly used to mill a section of steel casing, which as the section mill mills along the section of casing, allows the exit guide to be transported adjacent the milled-out casing and allows a drill bit and drill string to be run along the surface of the exit guide and into the earth formation. In an alternative embodiment, the combination of the section mill with the exit guide is used in open hole operations having no casing.

Abstract: An integrated pumping system for use in environments, such as subterranean environments, to move a desired fluid from one location to another. The integrated pumping system comprises one or more stages that each have an integrated pump and motor. A controller may be utilized to individually control the one or more integrated pumps and motors.

Abstract: A standard ROV/manual gate valve operating mechanism is used to move a bore selector between the production and annulus bores of a completion. The ROV operation could be via torsion or linear action. The positioning of the selector may be hydraulically linked to the functioning of retainer valves. Alternatively, the operating mechanism may be for one of the retainer valves, with a mechanical linkage for actuation of the bore selector.

Abstract: A method and apparatus for use with two or more hydraulic conduits deployed downhole reduces a number of penetrations required through a well bulkhead for a given number of fluid paths extending therethrough. In a described embodiment, a fluid conductor includes multiple fluid paths extending therein. The fluid conductor is installed in an aperture formed through a bulkhead. Couplings are connected on opposite sides of the bulkhead to opposite ends of the fluid conductor. Multiple hydraulic lines are connected to each of the couplings.

Abstract: A well has a vertical casing with a window, and a lateral wellbore which communicates with the window, and which may have a casing or liner. A window assembly aligned with the window has respective passageways for first and second tubing strings, and has a concave surface for deflecting the first tubing string out into the lateral wellbore. The passageway for the second tubing string has a portion which is inclined at a very small angle with respect to a vertical centerline of the vertical casing. As the first tubing string is run into the vertical casing, a rotational locator is releasably coupled thereto by a soft release coupling mechanism. After the locator effects rotational orientation, the coupling mechanism is released and then permits the first tubing string to move therepast without damage. A seal assembly on the first tubing string is covered by a protective sleeve as it is inserted into the well, and exits the protective sleeve after entering the lateral wellbore.

Abstract: A downhole drilling apparatus for interconnection in a casing or liner string having a drill bit disposed thereon for enabling the drilling of intersecting wellbores without removal of the drill bit is disclosed. In a disclosed embodiment, the apparatus comprises a housing having a window. A whipstock is disposed within the housing. Between the window and the whipstock is a filler. The whipstock and the filler define a central bore providing a fluid path through the apparatus. A back pressure valve may be disposed within the central bore to prevent back flow of fluids through the apparatus. Once the total depth of an initial wellbore is reached, the casing or liner string, including the apparatus, may be cemented in place. Thereafter, an intersecting wellbore may be drilled by laterally deflecting a second drill bit with the whipstock through the window of the housing.

Abstract: A wellbore casing, including a casing section, for deployment in a subterranean wellbore. The casing section includes a pre-milled windowed opening. A liner is disposed within the casing section covering the window opening from the inside. In addition, a rigid material is disposed outside of the casing section covering the window opening. A filer is located intermediate the casing section and the liner. The liner, filler and rigid material prevent cement from affecting the window opening when the casing section is being cemented in the wellbore.

Abstract: A method and apparatus for creating multiple branch wells from a parent well is disclosed. According to a first embodiment of the invention a multiple branching sub is provided for placement at a branching node of a well. Such sub includes a branching chamber and a plurality of branching outlet members. The outlet members, during construction of the branching sub, have previously been distorted into oblong shapes so that all of the branching outlet members fit within an imaginary cylinder which is coaxial with and substantially the same radius as the branching chamber. According to one embodiment, the distorted outlet members are characterized by an outer convex shape. In another embodiment, the distorted outlet members are characterized by an outer concave shape when in a retracted state. After deployment of the branching sub via a parent casing in the well, a forming tool is lowered to the interior of the sub.

Abstract: A cement diverter system and method for cementing a junction in a wellbore wherein a cementing operation and reverse circulating operation are achievable in a single run in the hole.

Abstract: This invention relates to the flow control of wellbores including a parent well and at least two lateral branches, each of which may have any direction (from vertical to horizontal). The flow from each lateral branch is independently controlled by a separate flow control device. The flow control devices are located within the parent well to enable an easier and efficient workover and intervention of such devices. In some embodiments, the flow control devices are located above the intersection between the parent well and the at least two lateral branches for similar reasons.

Abstract: A method and apparatus for unblocking particulate plugs that develop in a well that produces fluid laden with suspended particles when a pump in the well is idled are described. In order to remove the plugs, a valve is inserted in the production tubing above the pump, the valve permitting the well fluid to flow up past the valve but inhibiting the well fluid from flowing down past the valve so that a majority of particles that settle from the well fluid when the pump is idle are trapped above the valve and do not plug the pump. A volume of well fluid trapped between the bottom of the valve and the top of the pump permits pressure waves induced by starting and stopping the pump to be generated. The pressure waves force fluids past the valve until the particles in the plug are resuspended to permit production to resume. The advantage is a simple, low cost solution to a long standing problem which required pulling of the production tubing from the well in order to remove the particulate plug.

Abstract: An apparatus for monitoring and controlling flow in offset parallel bores contained within a single completion component provides parallel bores and recesses for mounting monitoring or control devices in a single unit which is sized to fit within an 8.5″ I.D. of a 9⅝″ standard casing of an oil field wellbore.

Abstract: An induction choke in a petroleum well where a voltage potential is developed across the choke to power and communicate with devices and sensors in the well. Preferably, the induction choke is a ferromagnetic material and acts as an impedance to a time-varying current, e.g. AC. The petroleum well includes a cased wellbore having a tubing string positioned within and longitudinally extending within the casing. A controllable gas lift valve, sensor, or other device is coupled to the tubing. The valve sensor, or other device is powered and controlled from the surface. Communication signals and power are sent from the surface using the tubing, casing, or liner as the conductor with a casing or earth ground. For example, AC current is directed down a casing or tubing or a lateral where the current encounters a choke. The voltage potential developed across the choke is used to power electronic devices and sensors near the choke.

Abstract: A device for regulating fluid flow in a multilateral well is provided.

Abstract: A tie-back insert is installed in a primary wellbore and includes a housing which includes one or more axial bores therethrough and a lateral bore which extends laterally out the side of the housing. The lateral bore allows a liner to pass through the top of the insert, through the lateral bore and into the lateral borehole to a new producing formation. The annulus formed between the housing and the casing is sealed at the upper end of the housing by an upper packer and the lower end of the housing is sealed by stabbing into a lower packer. The upper and lower packers seal around the window cut in the casing. The axial bores allow production fluid from the primary wellbore to be transmitted through the insert to the surface of the well. The insert is placed within the primary wellbore so that the lateral bore is located and oriented adjacent the lateral borehole allowing production fluid from the lateral borehole to transmitted to the surface of the well.

Abstract: An intermittent gas lift well pumping system containing an accumulator, a gas line, a liquid discharge line, and a battery operated controller. By using one or more constrictions in the gas line and acoustical techniques, accurate liquid level is determined in the pumping system for optimum production. Bypasses are connected between the gas line and the liquid discharge line. Each contains a valve that opens at a preset absolute pressure in the gas line, an orifice, and a one-way valve. The bypasses are strategically placed to prevent overloading of the system. A liquid slug sensor on the upper end of the liquid discharge line and a rabbit in this line enables optimum production and gas conservation.

Abstract: An improved method for drilling a lateral well from an existing wellbore is disclosed whereby a section of said existing wellbore is preferably enlarged such as by under-reaming. The enlarged section is filled with a material such as, for example, epoxy which hardens to form an impermeable body. The hardened material is drilled out laterally and also longitudinally, such that a sealed junction is formed within the impermeable body between the lateral well and existing well. In one embodiment of the present invention, a packer positioned within the enlarged may be filled with the material to thereby avoid any contamination of the material with other downhole elements such as mud and oil whereby the composition of the material is consistent and known. In one embodiment, a drillable guide may be positioned in the enlarged section prior to filling the enlarged section with material to thereby subsequently guide a drill bit through the hardened material for reestablishing a path within the existing wellbore.

Abstract: An improved method for drilling a lateral well from an existing wellbore is disclosed whereby a section of said existing wellbore is preferably enlarged such as by under-reaming. The enlarged section is filled with a material such as, for example, epoxy which hardens to form an impermeable body. The hardened material is drilled out laterally and also longitudinally, such that a sealed junction is formed within the impermeable body between the lateral well and existing well. The longitudinal drilling follows an arcuate path. In one embodiment of the present invention, a packer positioned within the enlarged section may be filled with the pumped material to thereby avoid any contamination of the material with other downhole elements such as mud and oil whereby the composition of the pumped material is consistent and known. In one embodiment, an arcuate drillable guide may be positioned in the enlarged section prior to filling the enlarged section with material.

Abstract: A method and apparatus to from a branch well includes a branching sub defining a branching chamber and multiple branching outlet members connected to the branching chamber. A stiffening structure or rib is provided at least at a juncture between two of the branching outlet members. The stiffening structure is adapted to reduce deformation of the branching chamber at the juncture as the branching outlet members are being deformed (such as being expanded).

Abstract: A downhole production well control system is provided for automatically controlling downhole tools in response to sensed selected downhole parameters. The production well having a production tubing string therein with multiple branches, i.e., zones. Communication and transmission of power (i.e. telemetry) over the production tubing string is by way of a combination of a hardwire system in the main borehole and a short hop system at the branches or laterals. Each zone includes a downhole control system and appropriate completion devices for controlling fluid flow. An acoustic or electromagnetic transceiver is associated with each control system for communication and/or transmission of power. An electrical conductor runs from the surface downhole along the production tubing string in the main borehole for communication and/or transmission of power, hardwired systems are well known.

Abstract: A novel apparatus and method for cementing branch wells from a parent well is disclosed herein. A cementing valve that is releasably coupled to a cementing stringer is used during cementing operations. The cementing valve is comprised of a valve body and a moveable member, each of which have openings formed therein. Movement of the moveable member opens or closes the cementing valve. The method involves releasably attaching the cementing valve to a cementing stinger, running the cementing valve downhole, positioning the cementing valve in a previously open branch outlet, and cementing the branch outlet and branching chamber into position within the well.

Abstract: A deformed multiple well template and a process for positioning the deformed template downhole, expanding the template and drilling at least one subterranean well bore via said template. The template has at least a portion thereof deformed and may be symmetrical or asymmetrical as deformed and/or expanded.

Abstract: A method and system for the downhole separation and injection of a predominately water component of the mixture produced from a naturally flowing or gas-lifted hydrocarbon well. The produced mixture is delivered to a separator located in the wellbore above an injection formation, the separator comprising a gas-liquid separator and an oil-water separator. The produced mixture is admitted to a gas-liquid separator to separate the free gas from the produced mixture. The gas-depleted produced mixture is then admitted to an oil-water separator where the produced mixture is separated into a predominately water component and a predominately hydrocarbon component. The separated gas and the predominately hydrocarbon component are delivered to the surface, separately or commingled. The predominately water is injected in the injection formation accessible through the same wellbore, and located below the separator.

Abstract: A method and system for the downhole separation and injection of surface water and water contained in a produced mixture from an underground formation of a hydrocarbon well containing hydrocarbon and water. Downhole separation of the produced mixture into a predominately water component and predominately hydrocarbon component is achieved using an oil-water separator. Surface water is delivered to a downhole fluid-driven pump under pressure so as to drive the pump. The downhole-separated predominately water component of the produced mixture is directed to the pump, by way of the pump and combined with surface water to obtain a combined fluid. The combined fluid is directed to a downhole injection formation by way of the pump. Oil is transported to the head of the well either naturally under the eruptive force of the well, or with the assistance of regular artificial lift methods, including gas-lift.

Abstract: An apparatus for locating a first tubular with respect to a window in a second tubular including at least one member extending from an outer surface of a liner for aligning the liner with respect to a window in a casing of a primary wellbore. In one aspect, the invention includes a key and a no-go obstruction to rotationally and axially align the apparatus with the window.

Abstract: An assembly for formation and completion of deviated wellbores is disclosed which includes a toolguide and a casing section which can be used together or separately. The toolguide includes a lower orienting section and a whipstock having a sloping face, commonly known as the directional portion of a whipstock. The toolguide is coated with a material such as epoxy or polyurethane to provide a repairable surface and one which can be removed to facilitate removal of the toolguide from the well bore. The lower orienting section has a latch which extends radially outwardly from the section and can be locked in the outwardly biased position.

Abstract: The drilling device is for creating bore-hole branches in unconsolidated rock. The device includes a fully-controllable pilot drill head with drill rods attached thereto. The pilot drill head has an opening on its periphery. The pilot drill head has further outlet openings through which a reinforcing-action drill suspension may be dispensed into a site where a bore-hole branch is to be created. An inner drill head is mounted for longitudinal movement within the pilot drill head and may be deflected out of the pilot drill head and its path by a deflection part within the pilot drill head. Upon its deflection, the inner drill head is directed through the opening on the periphery of the pilot drill head and into a bore-hole branch site.

Abstract: The present invention relates to methods and apparatus for expanding tubulars in a wellbore. In one aspect of the invention, an expansion tool with hydraulically actuated, radially expandable members is disposed on a string of coil tubing. In another aspect of the invention the apparatus is utilized to expand a tubular lining a lateral wellbore into contact with a window of a larger tubular lining a central wellbore.

Abstract: A completion string for use in a wellbore includes a tubing having a bore and a housing providing a main bore communicating with the tubing bore and further defining plural side bores generally parallel to each other. A plurality of valves are positioned proximal respective side bores to control fluid flow. An actuator is coupled to the valves to actuate the valves to at least open and closed positions. The valves may be part of tubular flow elements mounted to the housing, each tubular flow element including a bore that forms part of a respective side bore. Each valve may include a sleeve valve or a disk valve. The housing may include a side pocket mandrel.

Abstract: In a broad aspect, the invention is a downhole well tool for use within a well casing having a locking slot, an orienting profile, an alignment slot, and a lateral well bore window. The tool may broadly include a body member having a first and a second longitudinal bore extending therethrough, a diverter member extending therefrom and having a diverter surface. The second longitudinal bore extends through the diverter member. The tool may also include an outwardly-biased orienting key movably secured to the body member and engageable with the orienting profile and the alignment slot, and an outwardly-biased locking key movably secured to the body member and engageable with the locking slot. The diverter surface is aligned with the lateral well bore window when the orienting key is engaged with the alignment slot and the locking key is engaged with the locking slot.

Abstract: A multi-lateral well has a casing, and has lateral wellbores which communicate with the casing through respective windows. A tool at the end of a coiled tubing string is introduced into the well, while disposed in a tool receiving recess of an auxiliary member that is releasably coupled against upward movement relative to the tool. At a selected vertical position within the casing, the auxiliary member is secured against further downward movement, and the releasable coupling is then interrupted to permit the tubing string to move downwardly with respect to the auxiliary member. The auxiliary member may have an inclined surface to deflect the tool into a lateral wellbore. When use of the tool is completed, the tubing string with the tool thereon is moved upwardly, and an arrangement is provided to limit upward movement of the tool relative to the auxiliary member, so that the tool and the auxiliary member are simultaneously withdrawn from the well.

Abstract: In its broadest embodiment, the invention contemplates an apparatus for multi-phase vacuum extraction and a method for using the apparatus. The apparatus primarily includes: a first substantially vertically oriented conduit having an upper end and a closed lower end; the upper end including a vacuum suction port; a second substantially vertically oriented conduit having an open upper end and a lower end; the lower end having plural openings spaced from the lowest point to the highest point thereof. The second substantially vertically oriented conduit is axially disposed within the first substantially vertically oriented conduit; and, a seal is disposed between the outer surface of the upper end of the second substantially vertically oriented conduit, and the inner surface of the upper end of the first substantially vertically oriented conduit below the vacuum suction port.

Abstract: A method of installing multiple strings within a wellbore. The method utilizes a carrier string having carrier string joints, a plurality of side strings each having side string joints, and a carrier tool for transferring the weight of the side strings to the carrier string permitting the side strings to be held, raised, and lowered within the wellbore by holding, raising, and lowering the carrier string. The carrier tool includes a body having a threaded through bore extending through the body and at least one threaded blind bore on the body. The method comprises the steps of engaging the carrier string joint into the carrier tool at the through bore so that the carrier string extends vertically upward and downward from the carrier tool, and engaging side string joints into the carrier tool at the at least one threaded blind bore.

Abstract: A scoop capable of orienting a orientable downhole tool, such as a whipstock assembly, comprising: an orienting member that includes a helical upper surface that terminates in a first pin engaging slot. The pin engaging slot includes upper and lower closed ends such that when the orientable downhole tool advances toward the orienting member, a pin on the orientable downhole tool engages the helical upper surface and orients the orientable downhole tool assembly and when said pin on the orientable downhole tool assembly engages the slot, the orienting member resists axial movement in either axial direction and resists rotational movement in either rotational direction.

Abstract: A formation isolation valve assembly for use in a well includes first and second fluid paths that are coupled to at least first and second completion zones. A first valve controls fluid flow from the first zone to the first fluid path, and a second valve controls fluid flow from a second zone to the second fluid path. The valves may include ball valves and sleeve valves.

Abstract: A downhole string includes a liner and devices positioned outside the liner. One or more control lines extend from the liner devices along the exterior of the liner to one or more connectors that provide connection points inside the liner. The one or more connectors may include electrical connectors (e.g., direct contact connectors), inductive connectors (e.g., inductive couplers), optical connectors (e.g., fiber optic connectors), and hydraulic connectors. The one or more control lines may be electrical lines, fiber optic lines, or hydraulic lines. The downhole string may also be used with a cement protector during cementing operations to protect both the inside of the liner as well as the one or more connectors attached to the liner. The cement protector includes a sleeve that isolates cement from the inside of the liner during a cementing operation so that a liner wiper plug is not needed. The cement protector is engageable to a pulling tool that is attached to a running tool.

Abstract: An assembly for formation and completion of deviated wellbores is disclosed which includes a toolguide and a casing section which can be used together or separately. The toolguide includes a lower orienting section and a whipstock having a sloping face, commonly known as the directional portion of a whipstock. The toolguide is coated with a material such as epoxy or polyurethane to provide a repairable surface and one which can be removed to facilitate removal of the toolguide from the well bore. The lower orienting section has a latch which extends radially outwardly from the section and can be locked in the outwardly biased position.

Abstract: A well completion apparatus and method comprises a junction assembly having a template and a lateral branch connector engageable with the template to couple a main bore to a lateral branch bore. To improve inter-engagement characteristics of the template and connector, one arrangement of the junction assembly utilizes a continuous rail and groove inter-engagement mechanism. In another arrangement, a portion of the rail and groove inter-engagement mechanism is segmented instead of continuous. A method and apparatus is also provided in some arrangements to enable placement of intelligent completion devices in a lateral branch. Additionally, some junction assemblies comprise flow control mechanisms to control commingling, or not, of fluids from different regions in the well bore.

Abstract: A ported sub treatment system in which well treatment materials are pumped into an uncased portion of a well through a jointed tubing string having a number of holes at specific locations along its length such that these materials are able to be distributed as desired by the operator, through these holes, along the length of the well. The treatment system is also able to provide sufficient pressure such that treatment materials are able to penetrate or fracture the rock surrounding the well, if necessary.