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| Number | Title | Issue Date |
| 8042626 | Gripping tool A gripping tool includes a body assembly and gripping assembly with a grip surface adapted to move from a retracted position to an engaged position to radially engage a work piece in response to relative axial displacement. A linkage is provided to act between the b... | 10/25/2011 |
| 7967086 | Slip spool assembly and method of using same A slip spool includes radially disposed actuators for radially moving slip blocks between a loose encirclement position in which they surround the tubing string and a cached position in which the slip blocks clear an axial passage of the slip spool. The slip spool f... | 06/28/2011 |
| 7909120 | Gripping tool A gripping tool includes a body assembly and gripping assembly with a grip surface adapted to move from a retracted position to an engaged position to radially engage a work piece in response to relative axial displacement. A linkage is provided to act between the b... | 03/22/2011 |
| 7896111 | Gripping tool with driven screw grip activation A gripping tool having at least one body, including an associated load adaptor adapted to be connected to and interact with one of a drive head or reaction frame. A gripping assembly, carried by the body, has a grip surface adapted to move from a retracted position ... | 03/01/2011 |
| 7743856 | Slip spool assembly and method of using same A slip spool includes radially disposed actuators for radially moving slip blocks between a loose encirclement position in which they surround the tubing string and a cached position in which the slip blocks clear an axial passage of the slip spool. The slip spool f... | 06/29/2010 |
| 7703554 | Slip groove gripping die A toothed pipe gripping die insert has textured surfaces on the die surface opposite the pipe gripping teeth to reduce the insert-to-insert carrier contact surface area to increase unit loading such that selected loads forcing the die insert against its carrier impr... | 04/27/2010 |
| 7665551 | Flush mounted spider A gripping apparatus for supporting a tubular includes a longitudinal opening extending therethrough. A bowl is formed on an inner wall of the housing to provide an incline surface for one or more gripping members. As the gripping members are move down along the inc... | 02/23/2010 |
| 7510033 | Apparatus for vertically supporting pipes An apparatus for vertically supporting pipes in oil production rigs. The apparatus includes an outer frame and a centering device. In the area of an inner side of the outer frame, at least one wedge device is provided for clamping the pipe. The outer frame is connec... | 03/31/2009 |
| 7467676 | Method and device for preventing pipeskidding A method and device for preventing a pipe string (5) clampingly arranged in a slips (2) from slipping out of the slips (2) in the event of the pipe string (5) slipping in the slips (2), wherein a pipe clamp (22) is clamped, ... | 12/23/2008 |
| 7448456 | Adjustable rotating guides for spider or elevator The present invention provides a method and apparatus for gripping one or more tubulars, which may include casing, during a tubular handling operation, drilling operation, and/or drilling with casing operation. The gripping apparatus comprises a housing having a bor... | 11/11/2008 |
| 7434630 | Surface instrumentation configuration for drilling rig operation One embodiment includes an apparatus comprising a surface slip to support drill tubing and having a communications instrument. ... | 10/14/2008 |
| 7419008 | Power slip A power slip that utilizes modified SDXL slips and regular drilling bowls that fits to the pin drive master bushings of the rotary table and utilizes the depth of the drive pin holes as part of the actuators, thus allowing the power slip to set lower for added clear... | 09/02/2008 |
| 7419000 | Apparatus and method for securing pipes An apparatus for holding in place a first casing while a second casing is connected to the first casing, including an annular clamp made up of three segments hingedly fit together to form a ring. The inner surface of each segment includes an insert within a dovetail... | 09/02/2008 |
| 7395855 | Radially moving slips Slips (1, 21, 41) for engaging any jointed, coiled or flexible tubular with substantially no scoring, gouging or scraping, such as when supporting a drill string in a borehole or gripping a tubular (2, 22) during the connection or disconnection of a to... | 07/08/2008 |
| 7392864 | Slip spool assembly and method of using same A slip spool includes radially disposed actuators for radially moving slip blocks between a loose encirclement position in which they surround the tubing string and a cached position in which the slip blocks clear an axial passage of the slip spool. The slip spool f... | 07/01/2008 |
| 7337861 | Method and a device for preventing pipeskidding A method and device for preventing a pipe string (5) clampingly arranged in a slips (2) from slipping out of the slips (2) in the event of the pipe string (5) slipping in the slips (2), wherein a pipe clamp/tong (22) is clam... | 03/04/2008 |
| 7293618 | Power slip for drillpipe This invention relates to a mechanical apparatus for gripping and manipulating tubular members, such as drill pipe. The apparatus is essentially an automated slip puller, which generally comprises a slip base, a pulling mechanism pivotally attached to the slip base,... | 11/13/2007 |
| 7267168 | Spider with discrete die supports The spider, arranged for support on a drilling rig, is fitted with a plurality of slips peripherally distributed about a slip bowl. Each slip has a plurality of pipe gripping dies distributed vertically and resting on individual abutment surfaces on the slip. Each s... | 09/11/2007 |
| 7252161 | Method and apparatus with slips assembly for coupling tubulars without interruption of circulation A slips assembly which comprises a plurality of slip segments which, when positioned adjacent to each other, form a collar, which collar is larger than the diameter of the tubular body of the tubular at the top of the drill string and smaller than the diameter the u... | 08/07/2007 |
| 7231984 | Gripping insert and method of gripping a tubular The present invention generally provides an insert for a clamping device or gripping apparatus for conducting translational forces and/or torque into a moveable object, such as a tubular, casing, liner, pipe, expandable tubular, tubing, drill pipe. In one aspect, th... | 06/19/2007 |
| 7228913 | Tubular clamp apparatus for top drives and methods of use An apparatus for releasably clamping and holding a member for wellbore operations, the apparatus having a main body, two opposed clamping apparatuses in the main body, the two opposed clamping apparatuses spaced-apart for selective receipt therebetween of a member t... | 06/12/2007 |
| 7216700 | Torsional resistant slip mechanism and method A well bore tool with a torsional resistant slip mechanism for resisting axial and torsional forces comprising a mandrel, a plurality of slips disposed about the circumference of the mandrel. The slips include a plurality of inserts oriented to resist axial forces a... | 05/15/2007 |
| 7191840 | Casing running and drilling system A method and apparatus for holding and turning a tubular and string of tubulars, such as casing, for make-up and drilling with the tubulars are disclosed. The apparatus generally includes a spear and a clamping head, both of which are mounted to a top drive. The spe... | 03/20/2007 |
| 7188547 | Tubular connect/disconnect apparatus An apparatus for rotating a tubular, the apparatus, in at least certain aspects including a frame, a rocker assembly connected to the frame, the rocker assembly including a top rocker arm pivotably mounted to the frame, and a bottom rocker arm pivotably mounted to t... | 03/13/2007 |
| 7152674 | Disconnect devices A disconnect device for use as part of a tubing string downhole in an oil or gas well and which comprises a tubular body, at least one slip held within the tubular body, and a sleeve housed within the tubular body to hold the at least one slip in coupling engagement... | 12/26/2006 |
| 7143849 | Flush mounted spider A gripping apparatus for supporting a tubular includes a longitudinal opening extending therethrough. A bowl is formed on an inner wall of the housing to provide an incline surface for one or more gripping members. As the gripping members are move down along the inc... | 12/05/2006 |
| 7140453 | Pipe handling apparatus An apparatus for moving and handling tubulars has a stinger (21) slidably mounted on a frame which stinger comprises a rod or tube the end of which is adapted to fit within the pipe (20) to be moved, a gripping means (23) on the end of the sting... | 11/28/2006 |
| 7134531 | Heavy load carry slips and method A tubular handling device. The device includes a plurality of slips, and wherein the slips have an arcuate inner face that has a longitudinally disposed slot and a ledge therein. The device further comprises an insert having a shoulder that is configured to fit with... | 11/14/2006 |
| 7124828 | Apparatus for retaining two strings of tubulars An apparatus for retaining two strings of tubulars characterized in that the 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, the device comprising at least one... | 10/24/2006 |
| 7111676 | Pipe centering device The preferred embodiment includes methods and apparatus for locating a member within an aperture. One preferred apparatus generally includes a housing containing at least one rotatably connected ring, and a plurality of tie members spaced evenly about the ring's per... | 09/26/2006 |
| 7082991 | Slip spring with heel notch In order to prevent premature separation of the slip and slip spring and to simplify production of the slip casing, a self-centering spring engageable with a packer tool slip is modified according to the present invention. A groove located at a lower center of the s... | 08/01/2006 |
| 7036578 | Tubing guide and coiled tubing injector A coiled tubing injector assembly includes a coiled tubing injector and a tubing guide. The tubing guide has an automatic clamping mechanism that includes a pair of clamping slips. The clamping slip will automatically move from an open position in which coiled tubin... | 05/02/2006 |
| 7032690 | Apparatus and method for visually detecting wear to insert bowls, bushings, and spiders An insert bowl, bushing, or spider includes a bowl having a central bore defined by an inner surface having an upper tapered section for engaging slips supporting a work string and a lower section. A wear indicator, such as a groove or substantially horizontal groov... | 04/25/2006 |
| 6994176 | Adjustable rotating guides for spider or elevator The present invention provides a method and apparatus for gripping one or more tubulars, which may include casing, during a tubular handling operation, drilling operation, and/or drilling with casing operation. The gripping apparatus comprises a housing having a bor... | 02/07/2006 |
| 6976534 | Slip element for use with a downhole tool and a method of manufacturing same A slip element and a method of manufacturing same according to which two or more inserts are placed in corresponding openings formed in a body member. The material forming the insert in one of the openings is stronger than the material forming the insert in another ... | 12/20/2005 |
| 6962205 | Subsea wellhead landing clamp and slip bowl assembly A clamp for supporting a subsea wellhead and attached casing string preparatory to installing same in a well, and slip bowl assembly for running a drill pipe cementing string inside the casing string. The clamp comprises two hinged together clamp halves with a conne... | 11/08/2005 |
| 6955225 | Method of and apparatus for securing capillary tubing in a wellhead A body having a bore therethrough for insertion of capillary tubing. A first means slidably coupled into the bore of the body frictionally restrains movement of the tubing by hydraulically engaging the periphery of the tubing with an elastomeric compressible sealing... | 10/18/2005 |
| 6948565 | Slip spool and method of using same A slip spool for selectively supporting a tubing string suspended in a wellbore can be mounted to a wellhead. The slip spool has an axial passage that is aligned with the wellbore, and at least two radial passages extending through a side wall of the slip spool and ... | 09/27/2005 |
| 6948575 | Slip manipulating apparatus The spider for large pipe has a base that straddles a slip bowl and supports an overarm that extends part way around pipe to be supported. The overarm is pivotally attached to the base and is moved vertically by an air bag or power cylinders to move a slip assembly ... | 09/27/2005 |
| 6935431 | Well reference apparatus and method The well reference apparatus and method of the present invention includes a reference member preferably permanently installed within the borehole at a preferred depth and orientation in one trip into the well. The reference member provides a permanent reference for ... | 08/30/2005 |
