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| Number | Title | Issue Date |
| 8167033 | Packer with non-extrusion ring 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. ... | 05/01/2012 |
| 8087459 | Packer providing multiple seals and having swellable element isolatable from the wellbore A packer provides multiple seals when deployed downhole. Exposed to an activating agent, a swellable element on the packer's mandrel expands radially outward to form a seal with the borehole wall. Deformable elements, are disposed on the mandrel adjacent the swellab... | 01/03/2012 |
| 7971640 | Method and device for setting a bottom packer The invention refers to a device for sealing an annular space formed between an outer cylindrical element (4) having an end closure (16) and an inner pipe (1) extending within the outer element and having a free end. The invention incorporates a... | 07/05/2011 |
| 7963322 | Large bore packer and methods of setting same Devices and methods for setting a packer inside a wellbore with little appreciable reduction of the useable area of the wellbore. The outer casing or liner of the wellbore contains one or more integrated casing coupler joints having an increased diameter chamber por... | 06/21/2011 |
| 7779908 | Arrangement for affixing an expandable packer in a hole 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 ... | 08/24/2010 |
| 7588077 | Downhole tubular seal system and method 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... | 09/15/2009 |
| 7448445 | Downhole tools having a seal ring with reinforcing element 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 eleme... | 11/11/2008 |
| 7431078 | Using pipe shrinkage upon expansion to actuate a downhole tool 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 al... | 10/07/2008 |
| 7387158 | Self energized packer 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 t... | 06/17/2008 |
| 7380592 | Pressure control tool for modluating pressure in a portion of a wellbore 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 ... | 06/03/2008 |
| 7360590 | Energized thermoplastic sealing element and method of use 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 e... | 04/22/2008 |
| 7357189 | Seal There is disclosed an expandable seal for sealing at least part of a wall of a well borehole, an expandable seal assembly comprising at least two such expandable seals, and a method of sealing at least part of a well borehole using such a seal. In one embodiment, th... | 04/15/2008 |
| 7357188 | Mono-diameter wellbore casing A mono-diameter wellbore casing is formed by radially expanding a first tubular liner off of a mandrel into contact with a second tubular liner. The first and second tubular liners are positioned within the wellbore in an overlapping relationship. The overlapping po... | 04/15/2008 |
| 7347274 | Annular barrier tool The present invention provides for an annular barrier tool to block or restrict the flow of well fluids in the annular region of a well. ... | 03/25/2008 |
| 7331581 | Inflatable packers 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... | 02/19/2008 |
| 7314092 | Packer 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 ... | 01/01/2008 |
| 7308945 | Packing tool and method 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 ... | 12/18/2007 |
| 7290603 | Downhole plug 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 mutu... | 11/06/2007 |
| 7287599 | Casing packoff system 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 se... | 10/30/2007 |
| 7279052 | Method for hydrate plug removal A method for removal of deposits such as hydrate plugs from a pipeline is provided including inserting a thruster pig connected to a return flow line into the pipeline The pig is then advanced forward into the pipeline by pumping a thrusting fluid into an annulus be... | 10/09/2007 |
| 7273110 | Sealing element for pipes and methods for using 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 t... | 09/25/2007 |
| 7255133 | Fluid pressure system including free floating bladder A fluid pressure system (S) includes a flexible diaphragm bladder (172) located inside a pressure tank (164) installed within a fluid system such as well (168). In preferred aspects, the bladder (172) can be inflated by the introduction o... | 08/14/2007 |
| 7252142 | Annular isolators for expandable tubulars in wellbores The present disclosure addressed apparatus and methods for forming an annular isolator in a borehole after installation of production tubing. Annular seal means are carried in or on production tubing as it is run into a borehole. In conjunction with expansion of the... | 08/07/2007 |
| 7240728 | Expandable tubulars with a radial passage and wall portions with different wall thicknesses A tubular liner including a first tubular portion, a second tubular portion, and an intermediate tapered tubular portion coupled to, and positioned between, the first and second tubular portions. ... | 07/10/2007 |
| 7234533 | Well packer having an energized sealing element and associated method 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. ... | 06/26/2007 |
| 7228896 | Ribbed sealing element and method of use A device for sealing and anchoring within a tubular member. The device comprises a top swage member disposed within the tubular member, with the top swage member having a longitudinal center of axis. Also included is a first sealing member disposed about the top swa... | 06/12/2007 |
| 7225867 | Liner top test packer 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 calibrate... | 06/05/2007 |
| 7216706 | Annular isolators for tubulars in wellbores The present disclosure addresses apparatus and methods for forming an annular isolator in a borehole after installation of production tubing. A first deployable annular isolator is carried on tubing as it is positioned in a borehole. An annular isolator forming mate... | 05/15/2007 |
| 7172029 | Bi-directionally boosting and internal pressure trapping packing element system The present invention is a packer for sealing an annular region in a wellbore. The packer includes a packing element which is held through bidirectional forces. The packer first comprises an inner mandrel. Disposed around the inner mandrel are three tubulars: (1) a ... | 02/06/2007 |
| 7168495 | Casing-engaging well tree isolation tool and method of use A casing-engaging wellhead isolation and method of the tool protects wellheads from lifting pressures induced by high fluid pressures and high flow rates used to stimulate low pressure wells. A releasable packer assembly mounted to a bottom end of a mandrel of the t... | 01/30/2007 |
| 7140447 | Subsurface annular safety barrier A subsurface annular safety barrier including a tubing disposed within a wellbore casing forming a casing-tubing annulus to allow fluid flow from and/or to a subterranean formation, and an annular barrier carried by the tubing and positioned in the casing-tubing ann... | 11/28/2006 |
| 7128145 | High expansion sealing device with leak path closures A high expansion packer or bridge plug is described. It features an external portion of a soft material that flows into spiral exterior leak paths formed when the sealing element is subjected to longitudinal compression. Preferably, the sealing element is an elastom... | 10/31/2006 |
| 7108065 | Technique for preventing deposition products from impeding the motion of a movable component A technique for preventing mineral, mineral salt and other deposits from impeding the motion of movable components in a submerged environment. The technique allows for a movable component in a submerged environment to move freely beneath a deformable member. As the ... | 09/19/2006 |
| 7093651 | Water pressure system with pressure tank installed within well casing of well A water pressure system includes a pressure tank installed underground within the well casing of a well. The water pressure system includes a submersible pump connected to the inlet of the pressure tank by a drop pipe. The outlet of the pressure tank is connected to... | 08/22/2006 |
| 7086479 | Expanding well tools Methods of expanding well tools, which permit operation of the well tools after expansion, are provided. In a described example, a cementing tool includes a valve and a packer. After the cementing tool is expanded, the valve is selectively opened and closed, and the... | 08/08/2006 |
| 7063142 | Method of applying an axial force to an expansion cone A method of applying an axial force to a first piston positioned within a first piston chamber including applying an axial force to the first piston using a second piston positioned within the first piston chamber. ... | 06/20/2006 |
| 7059412 | Technique for preventing deposition products from impeding the motion of a movable component A technique for preventing mineral, mineral salt and other deposits from impeding the motion of movable components in a submerged environment. The technique allows for a movable component in a submerged environment to move freely beneath a deformable member. As the ... | 06/13/2006 |
| 7044221 | Apparatus for coupling a tubular member to a preexisting structure An apparatus for coupling a tubular member to a preexisting structure. ... | 05/16/2006 |
| 7040396 | Apparatus for releasably coupling two elements An apparatus for coupling two elements including an outer tubular member defining one or more outer tubular member slots, an inner tubular member defining one or more inner tubular member slots positioned within the outer tubular member, and a coupling assembly for ... | 05/09/2006 |
| 7040409 | Safety valve for oil wells The present invention relates to a well safety valve set in a production tubing, comprising a body (17) including shutoff means (18) for shutting off a passage inside the body, anchor means (19) for anchoring the body in the tubing, sealing mean... | 05/09/2006 |
