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| Number | Title | Issue Date |
| 8136604 | Wireline run fracture isolation sleeve and plug and method of operating same An isolation sleeve and plug assembly that may be used to protect a wellhead assembly from being damaged by high-pressure wellbore fracturing operations. Both the isolation sleeve and plug may be installed by the same running tool, and may be installed by lowering t... | 03/20/2012 |
| 8127857 | Single trip, tension set, metal-to-metal sealing, internal lockdown tubing hanger A system, apparatus, and method to apply tension to completion tubing in a wellbore. The system, apparatus, and method comprises an inner and outer tubing hanger, with the string of tubing attached to the inner tubing hanger. A running tool lands the outer tubing ha... | 03/06/2012 |
| 8113292 | Strokable liner hanger and method A strokable liner hanger includes a liner hanger; one of a slide seal and a casing seal sub disposed adjacent the liner hanger and the other of the slide seal and the casing seal sub disposed adjacent the one of the slide seal and the casing seal sub. A method for c... | 02/14/2012 |
| 8109339 | Zero backlash downhole setting tool and method A zero backlash downhole setting tool including a mandrel; a body lock ring at the mandrel; a setting sleeve in operable communication with a device to be set; a rotary take-up in tensile force transmissive contact with the device to be set; and a follower housing c... | 02/07/2012 |
| 8100188 | Setting tool for expandable liner hanger and associated methods A setting tool for an expandable liner hanger. A method includes the steps of: releasably securing the setting tool to the hanger, the setting tool including an expansion cone for displacing through the hanger; and conveying the setting tool and hanger into the well... | 01/24/2012 |
| 8091648 | Direct connecting downhole control system A system and method are provided for direct connecting downhole control hydraulics through an oil field hanger, where the hanger is coupled to a wellhead, to hydraulic lines extending outside the wellhead. Further, the direct connection allows hydraulic system integ... | 01/10/2012 |
| 8074724 | Bit-run nominal seat protector and method of operating same A drilling system employs a set of bushings that protect seats used for casing hangers. The system includes one or more seat protectors that attach to a running tool. The running tool is lowered down the wellbore with the seat protectors attached and deposits a bush... | 12/13/2011 |
| 8069925 | Downhole resettable clutch swivel A top sub of a clutch swivel for connection to a production well tubing string is movable between an engaged position and a disengaged position relative to a mandrel. The engaged position allows an anchor to be set in a well casing by rotating the tubing string. Ten... | 12/06/2011 |
| 8056640 | Hydraulic head clamp assembly for mobile drill rig A hydraulic head clamp assembly is integral with a drill head mounted on a mobile drill rig. A side-shift carriage is provided for shifting the drill head from side-to-side relative to a centerline of a drill rod string. The clamp assembly includes a rigid jaw mount... | 11/15/2011 |
| 8042616 | Apparatus and methods for drilling a wellbore using casing Apparatus and methods for drilling with casing. In an embodiment, methods and apparatus for deflecting casing using a diverter apparatus are disclosed. In another embodiment, the apparatus comprises a motor operating system disposed in a motor system housing, a shaf... | 10/25/2011 |
| 8020627 | Equalized load distribution slips for spider and elevator Embodiments of the present invention generally relate to an apparatus for supporting a tubular that more evenly distributes stress along the contact length of a tubular. In one embodiment, an apparatus for supporting a tubular is provided. The apparatus includes a b... | 09/20/2011 |
| 8002044 | Coupler retained liner hanger mechanism with moveable cover and methods of setting a hanger inside a wellbore A liner hanger has a housing with a pocket disposed on an inner wall surface and a slip slidingly engaged within the pocket. A moveable cover is disposed interior to the slip thereby restricting movement of the slip from a unset position to a set position. The liner... | 08/23/2011 |
| 7963341 | Apparatus and methods of use for a whipstock anchor An anchor for a wellbore is adaptable to be operated in at least two separate and distinct ways. In one embodiment, a whipstock anchor is provided that can be operated either mechanically or hydraulically. In another embodiment, the anchor is designed to run through... | 06/21/2011 |
| 7958941 | Hydraulic running tool assembly and method of its use An assembly and method for downhole equipment deployment comprising a liner hanger attachable to deployable equipment, a top sub insertable into the liner hanger and attachable to a tubing string, a lock piston releasably connectable to the top sub, and lock pins in... | 06/14/2011 |
| 7913768 | Release device A downhole system including a driving unit for driving an operational tool. The driving unit is provided in a first part of the system and the operational tool is provided in a second part of the system. The system further includes a release device for releasing the... | 03/29/2011 |
| 7909107 | High capacity running tool and method of setting a packoff seal A high capacity running tool sets and internally tests a casing hanger packoff during the same trip. The running tool has a stem and a body. The body is secured by threads to the stem of the running tool so that rotation of the stem relative to the body will cause t... | 03/22/2011 |
| 7905294 | Method of anchoring a progressing cavity pump Embodiments of the present invention generally relate to methods and apparatuses for anchoring progressing cavity (PC) pumps. In one embodiment, a method of anchoring a PC pump to a string of tubulars disposed in a wellbore which includes acts of inserting the PC pu... | 03/15/2011 |
| 7900708 | Multiple-block downhole anchors and anchor assemblies Multiple-block downhole anchors and anchor assemblies are provided. A downhole anchor assembly for a tubing string includes an anchor block, a drag block, a biasing arrangement, and a mandrel to be coupled to the tubing string. The anchor block moves, with rotation ... | 03/08/2011 |
| 7896088 | Wellsite systems utilizing deployable structure An apparatus for deploying an instrument usable with a well comprises at least one reversibly expandable structure, at least one actuator operable to change a perimeter dimension of the at least one reversibly expandable structure, at least one instrument disposed i... | 03/01/2011 |
| 7886833 | System and method for low-pressure well completion A low-pressure wellhead system with tubular heads and mandrels secured independently using threaded unions. A casing mandrel is secured to a wellhead by a first threaded union. Likewise, a tubing head spool is secured to the casing mandrel using a threaded union. A ... | 02/15/2011 |
| 7886834 | Anchoring system for use in a wellbore A technique enables anchoring of a tool in a wellbore. The technique utilizes one or more arms pivotably mounted to a structure for movement between a radially inward position and radially outward position that anchors the tool to a surrounding wall. A wedge compone... | 02/15/2011 |
| 7866406 | System and method for plugging a downhole wellbore A method for plugging a downhole wellbore including, running an anchor and swellable seal disposed at a mandrel within the downhole wellbore, setting the anchor within the downhole wellbore, releasing the anchor and the swellable seal, and swelling the swellable sea... | 01/11/2011 |
| 7841415 | Iron roughneck extension systems Extension systems for iron roughnecks are provided. These systems are equipment apparatuses and extendable/retractable supports for devices used for connecting and disconnecting tubular members (e.g. casing, tubing, pipe, or drill pipe) on drill rigs. The systems in... | 11/30/2010 |
| 7832488 | Anchoring system and method An anchoring module capable of being secured within a structure includes at least one compliant ring configured to radially expand and an expandable device positioned within the compliant ring to expand the compliant ring from a relaxed state to interface with the s... | 11/16/2010 |
| 7784552 | Liner drilling method An installation system for installing a liner in a well includes drilling while simultaneously running the liner. A string of drill pipe with a bottom hole assembly including a drill bit on a lower end is lowered into the liner while the liner is suspended at the ri... | 08/31/2010 |
| 7784551 | Tubular handling device A device for handling well pipe includes a mandrel including an upper end, a lower end and a long axis extending between through the upper end and the lower end. The mandrel secures to a top drive of a drilling rig. A threaded collar is located on an outer surface o... | 08/31/2010 |
| 7779924 | Method and apparatus for use in a wellbore A hanger assembly and method for its use is included, along with various examples of alternative constructions for the hanger assembly. Also included are examples of new tool strings having capabilities facilitated as a result of use of the hanger assemblies. The ha... | 08/24/2010 |
| 7766088 | System and method for actuating wellbore tools An actuator operatively coupled to a wellbore tool is activated upon receiving fluid that a predetermined applied pressure. When the fluid string reaches the predetermined applied pressure, the actuator undertakes a specified action such as longitudinal movement, ro... | 08/03/2010 |
| 7762343 | Apparatus and method for handling pipe An apparatus for handling pipes, the apparatus, in certain aspects, having a body having a tapered surface and at least a first slip and a second slip slidable on the tapered surface, a slip actuator for setting said at least first slip and said second slip, said fi... | 07/27/2010 |
| 7699113 | Apparatus and methods for running liners in extended reach wells An apparatus for running a liner into a wellbore may include an inner string, a device coupled to the inner string that is operable to engage the interior of the liner and facilitates running of the liner into the wellbore, and a control mechanism operable to contro... | 04/20/2010 |
| 7686088 | Equalized load distribution slips for spider and elevator Embodiments of the present invention generally relate to an apparatus for supporting a tubular that more evenly distributes stress along the contact length of a tubular. In one embodiment, an apparatus for supporting a tubular is provided. The apparatus includes a b... | 03/30/2010 |
| 7686089 | Hanging apparatus and method Apparatus, such as a liner, adapted to be hung in a downhole tubular such as casing is described. The apparatus includes one or more circumferentially distributed abrasive portions, arranged to be movable radially outwards by a dimple former or an expander. In an em... | 03/30/2010 |
| 7686090 | Liner hanger tool with re-latchable cementing bushing A liner hanger assembly comprises a tool mandrel (104) suspended on a running string, and a slip assembly (120) for engaging a casing to support the liner hanger and liner from the casing. The release assembly (175) releases the set liner hanger... | 03/30/2010 |
| 7681649 | Power slips A slip assembly for gripping pipe during well drilling operations has a housing with a hole for receiving a section of pipe. Pockets in the housing are spaced circumferentially around the hole. Each of the pockets has side walls that face toward each other and are c... | 03/23/2010 |
| 7673691 | Apparatus for retaining two strings of tubulars An apparatus for retaining two strings of tubulars characterized in that said apparatus comprises body parts of a device for retaining a single string of tubulars and a converting member. A device for retaining a string of tubulars, said device comprising at least o... | 03/09/2010 |
| 7669664 | Apparatus and method for opening and closing lateral boreholes The present invention relates to a downhole tool (102) for selectively opening and closing a lateral borehole extending from a primary borehole. The tool (102) comprises a body (104) incorporating a wall provided with an opening (116) ext... | 03/02/2010 |
| 7669665 | Mandrel for introduction into a fluid circulation duct, and related production well The mandrel comprises a body having a longitudinal axis together with a radially-expandable annular assembly. The annular assembly presents a peripheral surface for pressing against a borehole and a peripheral surface for pressing against the body. Around the longit... | 03/02/2010 |
| 7665534 | Zone isolation assembly for isolating and testing fluid samples from a subsurface well A zone isolation assembly (22) for a subsurface well (12) having a surface region (32), a first zone (26) and a second zone (28) includes a docking receiver (48) and a docking apparatus (50). The docking apparatus ( | 02/23/2010 |
| 7644773 | Self-conforming screen A screen that conforms to the borehole shape after expansion is disclosed. The screen comprises a compliant outer layer that takes the borehole shape on expansion. The outer layer is formed having holes to permit production flow. The material that is selected prefer... | 01/12/2010 |
| 7631698 | Depth control in coiled tubing operations A depth control system for maintaining a tubing conveyed tool in a desired location in a cased wellbore during wellbore operations performed with the tool includes a bottom hole assembly carried by a tubing, the bottom hole assembly including a tool and an anchoring... | 12/15/2009 |
