Abstract: Embodiments of the present disclosure generally provide a packer for use within a conduit, such as casing, having a non-extrusion ring. The non-extrusion ring is comprised of hard segments and an elastic matrix.

Abstract: A resettable antiextrusion system including a backup ring, a ramp in operable communication with the backup ring, and a gauge ring attached to the ramp. A method for sealing a tubular.

Abstract: A stuffing box for sealing around a polished rod in a well including a cylindrical connector for receiving the polished rod, a packing member having top and lateral surfaces and wherein the packing member is concentrically disposed around the polished rod, a body concentrically disposed around the packing member and sealing engaging the cylindrical connector, and wherein the body may be selectively moved to expose the top and lateral surface of the packing members is disclosed. A method of repairing, redressing, or replacing packing members of a stuffing box including providing a stuffing box at a wellhead, manipulating the stuffing box such that top and lateral surfaces of the packing members are exposed, removing the packing members, and redressing the stuffing box with new packing members is also disclosed.

Abstract: A method of completing a well having a casing hanger set in a subsea wellhead housing includes attaching a running tool to a tubular bridging hanger. A metal-to-metal inner seal is attached to a lower exterior portion of the bridging hanger and a metal-to-metal outer seal is located on an upper exterior portion of the bridging hanger. The assembly is lowered into the well and the lower exterior portion of the bridging hanger is inserted into the casing hanger. The inner seal is wedged between the casing hanger and the bridging hanger in response to weight of the running string. The running tool is actuated to set the outer seal between the upper exterior portion of the bridging hanger and the wellhead housing. Then, a tubing hanger is landed and sealed in the interior of the bridging hanger.

Abstract: A tubing string assembly is disclosed for fluid treatment of a wellbore. The tubing string can be used for staged wellbore fluid treatment where a selected segment of the wellbore is treated, while other segments are sealed off. The tubing string can also be used where a ported tubing string is required to be run in in a pressure tight condition and later is needed to be in an open-port condition.

Abstract: A non-metallic element system is provided as part of a downhole tool that can effectively seal or pack-off an annulus under elevated temperatures. The element system can also resist high differential pressures without sacrificing performance or suffering mechanical degradation, and is considerably faster to drill-up than a conventional element system. In one aspect, the composite material comprises an epoxy blend reinforced with glass fibers stacked layer upon layer at about 30 to about 70 degrees. In another aspect, a mandrel is formed of a non-metallic polymeric composite material. A downhole tool, such as a bridge plug, frac-plug, or packer, is also provided. The tool comprises a support ring having one or more wedges, an expansion ring, and a sealing member positioned with the expansion ring.

Abstract: A non-metallic element system is provided as part of a downhole tool that can effectively seal or pack-off an annulus under elevated temperatures. The element system can also resist high differential pressures without sacrificing performance or suffering mechanical degradation, and is considerably faster to drill-up than a conventional element system. In one aspect, the composite material comprises an epoxy blend reinforced with glass fibers stacked layer upon layer at about 30 to about 70 degrees. In another aspect, a mandrel is formed of a non-metallic polymeric composite material. A downhole tool, such as a bridge plug, frac-plug, or packer, is also provided. The tool comprises a support ring having one or more wedges, an expansion ring, and a sealing member positioned with the expansion ring.

Abstract: A non-metallic element system is provided as part of a downhole tool that can effectively seal or pack-off an annulus under elevated temperatures. The element system can also resist high differential pressures without sacrificing performance or suffering mechanical degradation, and is considerably faster to drill-up than a conventional element system. In one aspect, the composite material comprises an epoxy blend reinforced with glass fibers stacked layer upon layer at about 30 to about 70 degrees. In another aspect, a mandrel is formed of a non-metallic polymeric composite material. A downhole tool, such as a bridge plug, frac-plug, or packer, is also provided. The tool comprises a support ring having one or more wedges, an expansion ring, and a sealing member positioned with the expansion ring.

Abstract: A non-metallic element system is provided as part of a downhole tool that can effectively seal or pack-off an annulus under elevated temperatures. The element system can also resist high differential pressures without sacrificing performance or suffering mechanical degradation, and is considerably faster to drill-up than a conventional element system. In one aspect, the composite material comprises an epoxy blend reinforced with glass fibers stacked layer upon layer at about 30 to about 70 degrees. In another aspect, a mandrel is formed of a non-metallic polymeric composite material. A downhole tool, such as a bridge plug, frac-plug, or packer, is also provided. The tool comprises a support ring having one or more wedges, an expansion ring, and a sealing member positioned with the expansion ring.

Abstract: The present invention relates to an arrangement for affixing an expandable packer 22, 32 in a hole 30, wherein the arrangement includes a piston-and-cylinder device 11, 12 with which the piston can be caused to move in the cylinder with the aid of a pressurized medium. Expansion of the packer is effected with the aid of the movement of the piston 11, by transferring the force generated by piston movement to an expandable part 24, 34 of the packer 22, 32 so that said part will expand. Expansion of the packer results in the packer being firmly affixed in the hole by means of friction. The arrangement also includes an elongate main body 1 that has a through-penetrating aperture extending in the longitudinal direction of the body. The main body 1 has a front end 3, which faces inwardly of the hole when fastening the packer and towards the packer.

Abstract: A non-metallic element system is provided as part of a downhole tool that can effectively seal or pack-off an annulus under elevated temperatures. The element system can also resist high differential pressures without sacrificing performance or suffering mechanical degradation, and is considerably faster to drill-up than a conventional element system. In one aspect, the composite material comprises an epoxy blend reinforced with glass fibers stacked layer upon layer at about 30 to about 70 degrees. In another aspect, a mandrel is formed of a non-metallic polymeric composite material. A downhole tool, such as a bridge plug, frac-plug, or packer, is also provided. The tool comprises a support ring having one or more wedges, an expansion ring, and a sealing member positioned with the expansion ring.

Abstract: A system in some embodiments includes a tool for setting an annular seal, including an inner body, wherein the inner body is configured to rotate about a longitudinal axis of the tool and is configured to bias a retaining ring, a first outer body coaxial with the longitudinal axis and configured to couple to a portion of a mineral resource system, and a second outer body coaxial with the longitudinal axis, wherein the second outer body is coupled to the first outer body, and the second outer body is configured to move along the longitudinal axis to bias the annular seal.

Abstract: A high temperature packer (10) force a tubular string in a well, and includes a packer mandrel (12) and an elastomeric packer body (14) positioned circumferentially about the mandrel. An upper packer head (16) and a lower packer head (18) are each positioned about the mandrel and secured to an end of the packer body. A connector (24) axially interconnects at least one of the upper packer head and lower packer head to the packer mandrel, and a temperature responsive member (30) maintains the connector in position to secure the packer head to the mandrel until the temperature in the well rises to a level such that the responsive member yields to allow the connector to release the packer head from the mandrel.

Abstract: The present invention relates to a seal element for a wellbore which includes a support member, a bag positioned on the support member and a eutectic material positionable in the bag. The bag may be axially compressed and axially extended along the support member thereby permitting sealing and unsealing of an annulus in a wellbore. The eutectic material may be a phase changing salt.

Abstract: A packer setting device provides a buffered setting mechanism as a substantially incompressible fluid is selectively flowed into a compressible fluid chamber to compress a compressible fluid. This fluid transfer causes movement of a setting sleeve so that an associated packer device is set within a wellbore.

Abstract: A packer mandrel is radially surrounded by an axially compressible packer element and a backing ring. A setting sleeve arrangement also surrounds the packer mandrel adjacent the packer element. A hydraulic locking mechanism is used to secure the setting sleeve arrangement against the packer element. The hydraulic locking mechanism includes an expansible fluid-sealed chamber that is defined between the setting sleeve and the central packer mandrel.

Abstract: The present invention relates to a sealing and/or anchoring element for use in pipelines (1). The invention is characterized in that the sealing and/or anchoring element includes at least one helical element (5a, 5b, 14a, 14b) disposed around a string section (10), with the helical element (5a, 5b, 14a, 14b) being configured so as to be able to expand radially towards an inner wall of the pipeline (1) as the circumferential diameter thereof is increased.

Abstract: A plug member can be mounted to the end of a pipe and removed therefrom by automated operation. A mounting and dismounting device 21 for mounting and dismounting a plug member 11 with respect to an oil country tubular good P. The plug member 11 comprises an outer tube 12 having seal portions 16a and 16b and a circumferential groove 12a, a shuttle 13, a cap 14, and a shuttle biasing spring 15 secured to the cap 14 and the shuttle 13. The mounting and dismounting device 21 comprises a tubular holding body 22, a rod 23 which has a conical end portion 23a and which is disposed so as to move inside the tubular holding body 22, and moving means 24 and 25 which allow the tubular holding body 22 and the rod 23 to independently move. The tubular holding body 22 has ball-receiving holes 22a into which fit balls 26 which engage with the circumferential groove 12a.

Abstract: Disclosed herein is a downhole tubular sealing system. The sealing system includes, a deformable tubular sealable to a first tubular and a second tubular. The deformable tubular includes, a first deformable portion configured to deform in a first radial direction, a second deformable portion configured to deform in a second radial direction, and a third deformable portion configured to deform in the first radial direction. The second deformable portion is positioned longitudinally between the first deformable portion and the third deformable portion and at least one of the first deformable portion and the third deformable portion is sealable to the first tubular when the first deformable portion or the third deformable portion is deformed. Further, the second deformable portion is sealable to the second tubular when the second deformable portion is deformed.

Abstract: A support assembly for a deformable sealing element of a downhole tool such as a packer, bridge plug or straddle. The support assembly has first and second support devices at each end of the sealing element with each device having an elastically deformable support member adapted to be located between the respective end of the sealing element and an actuating member of the downhole tool. Additionally, a guide member with an inclined guide surface is provided such that the support member travels along the inclined surface when a force is exerted by the actuating member to expand the sealing element radially into abutment with a surface downhole. The support member moves radially outwards to support the respective end of the sealing element during deformation.

Abstract: A bow-spring centralizer includes a center assembly having a plurality of bow springs and a pair of generally tubular moving collars secured one to each end of each bow spring, the center assembly formed intermediate a pair of generally tubular stop collars. Each moving collar/stop collar combination forms an interlocking and axially extendable collar. The centralizer is formed from a single tube. The tube is cut using a laser according to a cut pattern that creates interlocked stop collar/moving collar combinations that are rotatably locked but axially movable one relative to the other. Each of the interlocked stop collars and moving collars includes a plurality of circumferentially spaced heads, each head integrally formed on one of a plurality of circumferentially spaced extensions protruding from the stop collar or moving collar. The heads may have a variety of projected shapes, such as a rectangular, arrow or a teardrop shaped.

Abstract: A downhole well tool comprises a seal ring secured along the outer surface of the downhole tool. The downhole tool expands the seal ring radially outward into sealing engagement with an outer tubular member in the well. The seal ring has an annular reinforcing element having an outer wall surface, an inner wall surface, and at least one hole disposed between the outer wall surface and the inner wall surface. At least one sealing material, either preformed or molded in place with the reinforcing element, is disposed along the outer wall surface, through each of the holes, and along at least a portion of the inner wall surface.

Abstract: A downhole tool with a mandrel that is expanded downhole is further actuated due to relative longitudinal movement between the mandrel and a member that accommodates radial expansion without undergoing as much shrinkage as the expanded mandrel or any shrinkage at all. In a packer application, the packer can be set in open hole or cased hole and the relative longitudinal movement that results from mandrel expansion leaves a residual longitudinal compressive force on the sealing element and a tensile reaction force on the underlying mandrel.

Abstract: A packer or plug features a main sealing element that swells after a delay long enough to get it into proper position. A sleeve eventually goes away to let the well fluids at the main sealing element to start the swelling process until contact with the surrounding tubular or the wellbore is established. Other sleeves that are disposed above and below the main sealing element preferably swell, but mainly in a longitudinal direction against the main sealing element to increase its contact pressure against the surrounding tubular or the wellbore. The longitudinally swelling members may also be covered to initiate their growth after the main sealing element has started or even completed its swelling action. The longitudinally swelling members can be constrained against radial growth to direct most or all of their swelling action longitudinally. Extrusion barriers above and below the main sealing element can optionally be used.

Abstract: A pressure control device for mounting on a mandrel includes a flexible cup member, a rigid support member and an anti extrusion portion of greater hardness than the cup member located at an outer portion of the cup member. The cup member is bonded only to selected areas of the anti extrusion portion and the support member, thereby permitting relative movement between other areas of contact.

Abstract: A packer element for use in forming a fluid pressure barrier within a wellbore. The packer element uses a thermoplastic component to accomplish the seal against the interior diameter of a surrounding tubular and an energizing component that is preferably formed of elastomeric material. The thermoplastic component of the packer element provides a sealing surface and defines an energizing chamber within. An energizing chamber is defined within the thermoplastic component and contains energizing elements that, when axially compressed, will urge the sealing surface of the thermoplastic component into sealing engagement with the surrounding tubular.

Abstract: Improved inflatable packers are provided. A packer may be constructed from hybrid structures including slat structures and weave structures. A packer may include a bladder and a cover, with a plurality of slats disposed therebetween, and/or a weave structure or anti-extrusion layer disposed therebetween. The slats may vary in width and thickness, and be provided with a plurality of reinforcement members. The reinforcement members may be longitudinally and/or transversely disposed in the slats. One or more of the various components of the packer preferably include a fiber, a wire, a cable, a nanofiber, a nanotube, and/or a nanoparticle modified elastomer. Anchors may be attached to or embedded in the outer cover. The packer may include a carcass having an end coupling including a plurality of slats. Improved packer cups are also disclosed, and preferably include a body member reinforced with a nanotube or similar material.

Abstract: A packer tool for mounting on a work string in an oil and/or gas well is described. The packer is of the compression set type but includes a mechanism to prevent premature setting in the well. A method of running the tool with the completion is provided in order to advantageously allow an integrity test to be performed on the same run.

Abstract: A packing tool comprises a sealing element for mounting on a mandrel so as to define a volume between the sealing element and the mandrel; and a ring member for mounting on the mandrel adjacent the sealing element. The ring member is axially movable relative to the sealing element to cause deformation of the sealing element and includes a communicating bore extending between the volume defined between the sealing element and the mandrel and an exterior portion of the tool.

Abstract: Downhole plug, especially designed for closing an annular conduit in an oil or gas well, under high pressure and temperature. It has two radially expandable ring elements 13, 15, which are arranged on a carrying cylindrical element 32, between two mutually axially movable pressure elements 12, 14, having an expansion sleeve in between. The ring elements can, by insertion of the downhole plug in a well, be expanded from an inner position, seen radially, to a sealing position against the wall of the well. The radially expandable ring elements 13, 15, comprises a closed series of circumferentially overlapping seal elements 13A, 15 A. By the expanding movement they are mutually moved in the circumferential direction, thereby maintaining a seal against each other. They form an outer sealing surface 38, which can provide a seal against a cylindrical pipe wall, and they have an inwards facing sealing surface 47.

Abstract: A well casing packer is provided that includes a seal mandrel having a first coupler, a second coupler, and a neck extending between the first coupler and the second coupler. A first compression body is slidably coupled to the seal mandrel at the first coupler. A second compression body is connected to the seal mandrel, and a compression lock ring connected to the first compression body. A packer seal is disposed in surrounding relation to a portion of the neck of the seal mandrel and between the second compression body and the compression lock ring, such that a longitudinal movement of the seal mandrel with respect to the first compression body allows the second compression body and the compression lock ring to longitudinally compress and radially expand the packer seal.

Abstract: A sealing device for shutting down a pipe, comprising an expandable cylindrical sleeve (1), which is designed with a conical interior, and is provided with radially through-going slots (3) extending in the sleeve's longitudinal direction from each of the sleeve's end surfaces (4,5), with slots from opposite end surfaces being arranged between one another. A rod (2) extends through the sleeve (1), where the rod (2) is provided with a conical portion with an outside adapted to the sleeve's conical inside, and where the rod's conical portion has a smallest diameter smaller than or equal to the sleeve's smallest inner diameter in its non-expanded form and a largest diameter equal to or larger than the sleeve's largest inner diameter in its expanded form.

Abstract: The present invention provides for a seal assembly that maintains a seal under various conditions by providing a source of stored energy that can be used to insure contact forces are maintained.

Abstract: A liner hanger test packer assembly includes an axially translated liner top dressing mill having a calibrated shear mechanism for securing the mill at a first, top dressing position. Tool string load on the mill bearing upon the liner top in excess of the calibrated shear mechanism allows the mill to shift to a second axial position where abutment edges around the Mill base engage a tripping mechanism to drive slips against the casing wall above the liner hanger. The tripping mechanism also expands the packer seal against the casing I.D. above the liner hanger. No additional load may be imposed on the liner hanger after the anchor slips have engaged.

Abstract: The seal assembly 10 seal between a subsea wellhead housing 12 and a casing hanger 16. A metal seal body 20 includes fingers 32 and 34 and one or more elastomeric seals 38. An upper seal body 64 may include threads for engagement with the metal seal body. According the method of the invention, an initial elastomeric seal is first formed, and fluid pressure is applied from above to set the high temperature metal seal.

Abstract: A packing element, which is a composite structure, contains the sealing portion to minimize extrusion. The element is retained in tension when running in to minimize damage. In the preferred embodiment, a collapsing sleeve transfers setting force applied at one end, to the opposite end to avoid the problem of bunching up the element adjacent to where it is being compressed which could, if not addressed, result in insufficiently low sealing contact pressure in regions remote from where the pushing force is applied.

Abstract: A packoff subassembly comprises the body having a first camming member secured at one end thereof and a second camming member supported thereon for relative sliding movement with respect thereto. The first and second camming members have outwardly angularly extending camming surfaces facing one another, and an elastomeric seal is mounted between the camming surfaces. A hub extends from the end of the body remote from the first camming member and threadedly receives a nut adapted to move the first and second camming surfaces toward one another thereby forcing the elastomeric seal outwardly and into sealing engagement with the surrounding surface.

Abstract: A sealing apparatus for sealing an annulus between a mandrel and an outer tubular. The apparatus comprises a top seal ring and a bottom seal ring separated by a double-ramped cylinder, all mounted on the mandrel and fit within the inner diameter of the outer tubular. The sealing apparatus is placed on the mandrel in running in position. The mandrel and sealing apparatus are then placed downhole in the outer tubular. Once at the desired location, a load is applied to the top seal ring. Once the load reaches a predetermined magnitude, the ramp slides under and expands the bottom seal ring to form a pressure-tight seal with the outer tubular. Additional load placed on the top seal ring causes the top seal ring to slide over the ramp and expand. As the top seal ring expands, the top seal ring forms a pressure-tight seal with the outer tubular.

Abstract: The present invention generally relates to a method and apparatus for sealing an annulus in a wellbore. In one aspect, the apparatus is an anchoring and sealing system for a downhole tool such as a bridge plug, packer, or frac-plug. The sealing system comprises of a sealing member disposed between a set of energizing rings, a set of expansion rings adjacent each cone, a set of support rings, and a set of slips. The components of the sealing system are arranged such that, when compressed, the sealing member may expand radially into contact with a casing. In another aspect, the apparatus the invention provides for an apparatus that is a downhole sealing tool.

Abstract: A device for sealing off an opening through the wall of a well tubular, which device comprises a tubular spacer having an outer diameter allowing the spacer to be arranged in the well tubular, a first seal collar assembly and a second seal collar assembly arranged opposite ends of the tubular spacer, each seal collar assembly comprising an activator ring and an annular seal collar, the activator rings being interconnected by a cylindrical system of shape memory alloy which system contracts when the temperature of the cylindrical system reaches the transition temperature of the shape memory alloy, and wherein each annular seal collar is arranged so as to be compressed against the inner surface of the well tubular upon contraction of the cylindrical system of shape memory alloy.

Abstract: A retrievable packer (50) for establishing a sealing and gripping engagement between a tubing string and a well casing (34) disposed in a wellbore is disclosed. The retrievable packer (50) comprises a collet member (64) that is slidably disposed about a packer mandrel (52). The collet member (64) has a first operating position wherein the collet member (64) applies an axial force on a support ring (76) to positively position the support ring (76) at least partially between a first slip wedge (90) and the packer mandrel (52) to set a seal assembly (96, 98, 100). In addition, the collet member (64) has a second operating position wherein the collet member (64) applies an axial force on a slip assembly (80) to set the slip assembly (80).

Abstract: A method of providing a downhole seal, such as a packer, in a drilled bore between inner tubing and outer tubing comprises: providing an intermediate tubing section defining a seal arrangement for engaging with the inner tubing; and radially plastically deforming the intermediate tubing section downhole to form an annular extension. The extension creates a sealing contact with the outer tubing.

Abstract: A packing tool assembly for sealing oil well bores that basically includes an elongated tubular member, two deformable sealing units, two stopper ring members and a cylinder member. A setting tool transports the packing tool assembly and the former stays in the oil well bore during the preparation and sealing phases without requiring the typical time-consuming withdrawal. When the preparation phase has been completed, the packing tool assembly is disengaged from setting tool and the sealing phase starts immediately. The latch members of the setting tool are received within the internal locking channels of the cylinder member. The setting tool is then rotated to cause the cylinder member to advance towards stopper ring members, deforming outwardly the sealing units. The latter are expanded against the walls of oil well bore. Once expanded the sealing units, the setting tool is removed and a tool for the extraction phase is inserted.

Abstract: Device for annular isolation in oil/gas wells comprising a production tube, the production tube comprises coaxially positioned, cylindrical sleeve (5) having in one end an at least partially radially directed opening slot (2), said sleeve including a cylindric sealing crown (1) coupled in one end to a release mechanism (3, 4) adapted to push the sealing crown (1) out through the opening, said sealing crown (1) in its other end being expandable in the tangential direction.

Abstract: A device for protecting the internally threaded end portion of a tubular member includes an externally threaded portion for engaging the internally threaded portion of the tubular member and a collar for engaging the exterior of the internally threaded end portion of the tubular member.

Abstract: A sealing apparatus for sealing an annulus between a mandrel and an outer tubular. The apparatus comprises a top seal ring and a bottom seal ring separated by a double-ramped cylinder, all mounted on the mandrel and fit within the inner diameter of the outer tubular. The sealing apparatus is placed on the mandrel in running in position. The mandrel and sealing apparatus are then placed downhole in the outer tubular. Once at the desired location, a load is applied to the top seal ring. Once the load reaches a predetermined magnitude, the ramp slides under and expands the bottom seal ring to form a pressure-tight seal with the outer tubular. Additional load placed on the top seal ring causes the top seal ring to slide over the ramp and expand. As the top seal ring expands, the top seal ring forms a pressure-tight seal with the outer tubular.

Abstract: A packing element, which is a composite structure, is disclosed. Components contain the sealing portion to minimize extrusion. The element is retained in tension when running in to minimize damage. In the preferred embodiment, a collapsing sleeve transfers setting force applied at one end, to the opposite end to avoid the problem of bunching up the element adjacent to where it is being compressed which could, if not addressed, result in insufficiently low sealing contact pressure in regions remote from where the pushing force is applied.

Abstract: A subterranean well tool is run through a well bore tubular and includes a well plug having an expandable elastomer member. An articulating anti-extrusion support system is provided for the well plug to resist extrusion of the elastomer. The system includes upper and lower platforms which are shiftable outwardly by a control mandrel. The platforms support extrusion resistors in the form of a series of crushable plates over which companion flexible cups are disposed and provide blade elements which may be flexibly positioned for inter-alignment around wing portions of the crushable plates for resistance of elastomeric extrusion. An elastomer member may include a series of spirable elastomeric sealing rings which, upon application of compressive load through the mandrel, expand in a helixical configuration through truncation initiation.

Abstract: A packer apparatus for sealing between a tubing string and a casing in a wellbore is disclosed. The packer apparatus includes a seal assembly disposed about a packer mandrel. Upper and lower seal wedges are disposed about the packer mandrel above and below the seal assembly and may be inserted between the seal assembly and the packer mandrel to radially expand the seal assembly into engagement with the casing. The seal assembly includes an expandable elastomeric seal element having anti-extrusion bridge elements disposed in recesses at the upper and lower ends thereof. The anti-extrusion elements form an almost complete circle and thus are arcuately shaped having first and second ends with a gap therebetween.

Abstract: A tubing system for use in an oil or gas well includes a tubing, provided with a holder portion; a casing, around the tubing; a packer, disposed in an annulus defined by the tubing and the casing; and a telescopic extension, positioned within the tubing and extendable beyond a distal portion of the tubing. The telescopic extension is provided with structures for fastening the telescopic extension to the holder portion of the tubing, and structures for accepting a tool by which the telescopic extension is axially displaceable to withdraw the telescopic extension from the distal portion of the tubing.