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| Number | Title | Issue Date |
| 8167050 | Method and apparatus for making up and breaking out threaded tubular connections An internally gripping tong to rotate tubular segments comprising a central cam body rotatably disposed within a housing having a plurality of windows. The cam body is surrounded by a plurality of angularly distributed gripping jaws slidably received within the wind... | 05/01/2012 |
| 8100187 | Multipurpose tubular running tool A tubular running tool includes a mandrel assembly having an upper mandrel, a lower mandrel and a mid-mandrel, wherein the upper mandrel, the lower mandrel and the mid-mandrel rotate in unison; the lower mandrel having a tubular gripping portion; a slip disposed wit... | 01/24/2012 |
| 8051909 | Method and apparatus for positioning the proximal end of a tubular string above a spider Method and apparatus for handling a supported tubular string with a string elevator and a spider on a rig to prevent damaging contact between the string elevator and spider while facilitating further connections of add-on tubular segments. The string elevator and su... | 11/08/2011 |
| 7891418 | Slippage sensor and method of operating an integrated power tong and back-up tong Method and apparatus to make-up or break-out a threaded tubular connection using an integrated power tong and back-up tong (10). The power tong (20) may be disabled upon sensing a predetermined threshold amount of displacement of at least a portion of ... | 02/22/2011 |
| 7752945 | Sprag tool for torquing pipe connections A pipe torquing sprag tool comprises one or more elastomeric sprags supported on a sprag support in an arrangement lying generally in a plane that is generally perpendicular to the axis of the rotatable sprag support. Each sprag has a solid, uninterrupted side and a... | 07/13/2010 |
| 7513537 | Tubular connection with slotted threads A connection for the quick and functionally reliable connection of tubulars including pipes and casing. The connection having a male or pin end and a mating female, box, or socket end and sections of circumferentially and axially extending protuberances such as thre... | 04/07/2009 |
| 7367403 | Top feed of control lines to table-elevated spider A method and apparatus are provided for installing control lines and pipe into a well. The pipe-holding spider that is normally mounted on the rig floor is supported by a table elevated above the rig floor. Supporting the spider on an elevated table provides personn... | 05/06/2008 |
| 7322406 | Elevation sensor for a service hose and an apparatus for positioning and stabbing well tubulars An operational system and method and improved apparatus for positioning and stabbing well tubulars wherein: the grasping members of the apparatus can be folded and unfolded; the boom assembly can be pivoted to a downward clearance position; a plurality of stabbing a... | 01/29/2008 |
| 7222677 | Control line guide and method of using same A control line guide and manipulating arm can protect and guide one or more control lines which are desired to be attached and lowered into a wellbore with a tubular string. The control lines may be moved toward a tubular string, can be clamped to the tubular string... | 05/29/2007 |
| 7216716 | Control line manipulating arm and method of using same A control line guide and manipulating arm can protect and guide one or more control lines which are desired to be attached and lowered into a wellbore with a tubular string. The control lines may be moved toward a tubular string, can be clamped to the tubular string... | 05/15/2007 |
| 7191686 | Method and apparatus for connecting and disconnecting threaded tubulars A system for screwing together threaded connections includes a pair of moveable arms which first grip the tubular to provide a contact force against three hydraulically powered drive rollers, that are contained within the arms. The three drive rollers will screw or ... | 03/20/2007 |
| 6568479 | Horseshoe shaped elevator and method for using same A U-shaped elevator having no doors is provided with first and second latching mechanisms which when contacted by the tubular to be entrapped within the elevator move from a closed position to an open position and which then return to a closed position as... | 05/27/2003 |
| 6557641 | Modular wellbore tubular handling system and method A wellbore tubular handling system and method is provided for operation in holding and lowering tubulars, such as casing strings, at a rig site. The handling system utilizes a plurality of interchangeable gripping modules for use with both the elevator sl... | 05/06/2003 |
| 5848647 | Pipe gripping apparatus A pipe gripping apparatus for angularly adapting to misaligned pipe on one or more pipe strings, said apparatus comprising: a housing having internal, opposing, downwardly curved surfaces therein and forming a longitudinal opening for passing a portion of... | 12/15/1998 |
| 5819805 | Casing thread protector A new and improved casing thread protector that has a toroidal body of elastomer with a bore to accept a pipe end, thread engagement pads, and a metal band and clamp arrangement extending around its periphery. The bore accepts the end of a pipe with threa... | 10/13/1998 |
| 5791410 | Apparatus and method for improved tubular grip assurance An apparatus for optionally gripping and releasing a tube, said apparatus having an elevator with a set of slips for optionally gripping and releasing a tube and a spider with a set of slips for optionally gripping and releasing the other end of said tube... | 08/11/1998 |
| 5174175 | Actuator for rotatable clamping apparatus A fluid actuator for a hydraulically powered rotatable gripping device which combines a fluid pressure or force multiplication with the capability of a physical separation of the rotating jaws and the fluid power source to permit rotation of the jaws and ... | 12/29/1992 |
