| Patents for E21B 19 - Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables (17,198) |
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| 06/03/2011 | WO2011028467A3 Pull tube sleeve stress joint for floating offshore structure |
| 06/03/2011 | WO2011023335A4 Handling device for drill pipes, especially devices known as pipe handlers or top drives with pipe handlers, and operating method therefor |
| 06/02/2011 | US20110130966 Method for well testing |
| 06/01/2011 | CN201851046U Automatic screw-off mechanism for underground drill rig |
| 06/01/2011 | CN201851045U Hydraulic clamp for shackle of boring rod |
| 06/01/2011 | CN201851044U Chuck of drilling rig |
| 06/01/2011 | CN201851043U Toothless high-friction clamping block |
| 06/01/2011 | CN201851042U Clip for polished rod of safety pumping unit |
| 06/01/2011 | CN201851013U Location slips type solid oblique guide device |
| 06/01/2011 | CN1985066B Apparatus and method for modified horizontal directional drilling assembly |
| 06/01/2011 | CN102083683A Offshore pipe and riser handling drilling vessel |
| 06/01/2011 | CN102080546A Simple reverse circulation drilling rig |
| 06/01/2011 | CN102080509A Opened type hydraulic dynamic clamp safety door interlocking protecting device |
| 06/01/2011 | CN102080508A Opened type hydraulic dynamic clamp safety door interlocking locking device |
| 06/01/2011 | CN102080500A High-powered crawler-type well dredger roller bracket assembly |
| 06/01/2011 | CN101353081B Water intake riser |
| 05/31/2011 | US7950668 Remote operated actuator system for drill string internal blowout preventer |
| 05/31/2011 | US7950467 Conveyor tube for use in installing or replacing a well tool in a producing well and procedures for use of the same |
| 05/31/2011 | US7950466 Wellhead system and connector for wellheads |
| 05/27/2011 | CA2686524A1 Automated pipe racking arm assembly |
| 05/26/2011 | WO2011060773A2 Device for securing pipes having various diameters |
| 05/26/2011 | WO2011060772A2 Device for handling pipes |
| 05/26/2011 | WO2011005111A3 Centring means in a rotary tong |
| 05/26/2011 | US20110120780 Method and Apparatus for a True Geometry, Durable Rotating Drill Bit |
| 05/26/2011 | US20110120729 Modular electro-hydraulic controller for well tool |
| 05/25/2011 | EP2324959A2 Self-clamping wrench |
| 05/25/2011 | EP2324188A2 Tube/pipe spooling device |
| 05/25/2011 | CN201843581U Double-center round plug and double-center round switch corresponding to same |
| 05/25/2011 | CN201843542U Coiled tubing injection head clamping block with friction increasing coating |
| 05/25/2011 | CN201843541U Mine rig drill stem adjustable clamping mechanism |
| 05/25/2011 | CN201843540U Control device of automatic spinner for drill rod joint |
| 05/25/2011 | CN201843539U Threaded threading-up device for oil casing |
| 05/25/2011 | CN201843538U Pneumatic control device for chuck of oil bushing |
| 05/25/2011 | CN201843537U Portable polished rod clamp dismounting ladder |
| 05/25/2011 | CN201843536U Dual-powered workover rig |
| 05/25/2011 | CN201843535U Sliding pin type drilling rig |
| 05/25/2011 | CN201843509U Quick power head lifting device and vehicle-mounted drill using same |
| 05/25/2011 | CN1973093B Top tensioned riser |
| 05/25/2011 | CN102076927A Tubular handling device and methods |
| 05/25/2011 | CN102071890A Dry frictional damping vibration-isolation energy-saving beam hanger |
| 05/25/2011 | CN102071889A Operating device of well drilling and repairing machine |
| 05/25/2011 | CN102071888A Double traveling lifting system of well drilling and repairing machine |
| 05/25/2011 | CN102071887A Operating method of well drilling and repairing machine |
| 05/25/2011 | CN102071875A Automatic control system for winch and control method of automatic control system |
| 05/24/2011 | US7946795 Telescoping jack for a gripper assembly |
| 05/24/2011 | US7946793 Apparatus for drilling colinear holes through concentric pipes |
| 05/24/2011 | US7946356 Systems and methods for monitored drilling |
| 05/24/2011 | US7946354 Pneumatic power tool with air cooling system |
| 05/24/2011 | US7946349 Method of radially expanding a tubular element |
| 05/24/2011 | CA2482743C Protective sleeve for threaded connections for expandable liner hanger |
| 05/24/2011 | CA2463147C Flush mounted spider |
| 05/24/2011 | CA2371989C Drill rod handling device |
| 05/19/2011 | WO2011022576A3 Load distributing apparatus and method |
| 05/19/2011 | WO2011017471A3 Pipe stand |
| 05/19/2011 | WO2010033947A3 Feed cable system for a tower of a drilling machine |
| 05/19/2011 | US20110114391 Grip head for an earth boring unit |
| 05/19/2011 | US20110114386 Split Sub-basement Drill Rig |
| 05/19/2011 | US20110114336 Apparatus and Methods for Multi-Layer Wellbore Construction |
| 05/19/2011 | US20110114328 Downhole swivel apparatus and method |
| 05/19/2011 | US20110114308 Hydraulic Interlock System Between Casing Gripper and Spider |
| 05/19/2011 | US20110113934 Drill stem connection and method |
| 05/19/2011 | CA2781088A1 Articulated apparatus for handling a drilling tool |
| 05/19/2011 | CA2721852A1 Tong positioning arm |
| 05/18/2011 | EP2322757A2 Clamp device with jaws, preferably for boreholes |
| 05/18/2011 | EP2322756A2 Apparatus for gripping a tubular on a drilling rig |
| 05/18/2011 | EP2322755A2 Apparatus for gripping a tubular on a drilling rig |
| 05/18/2011 | EP2322754A2 Apparatus for use with service loops in an oil derrick |
| 05/18/2011 | CN201835797U Driving device for rope-arranging mechanism |
| 05/18/2011 | CN201835773U Drill-rod receiving and buckling device |
| 05/18/2011 | CN201835772U Fixing clamp for pipe string pliers for oilfield drilling |
| 05/18/2011 | CN201835771U Hydraulic tong pneumatic centralizer |
| 05/18/2011 | CN201835770U Drill-rod receiving and putting device |
| 05/18/2011 | CN201835769U Head-frame tube placement device |
| 05/18/2011 | CN201835768U Split-type slip sleeve |
| 05/18/2011 | CN201835767U Tunnel drilling machine gear rack multiplication feeding mechanism |
| 05/18/2011 | CN201835766U Automatic drilling stem lifting and conveying device of drilling machine with top drive |
| 05/18/2011 | CN201834697U Rope arranging device for reciprocating motion of roller in bailing oil pumping unit |
| 05/18/2011 | CN102066691A Drill bit magazine, drill bit holder, and method for changing drill bit in rock drilling unit |
| 05/18/2011 | CN102066690A Rock-drilling unit, drill bit changer, and method for changing drill bit |
| 05/18/2011 | CN102061898A Rear tong head clamping mechanism of micro-damage screwing machine |
| 05/18/2011 | CN102061897A Main tong head clamping mechanism of micro-damage screwing machine |
| 05/18/2011 | CN102061896A Tong head clamping mechanism of non-destructive oil pipe power tongs |
| 05/18/2011 | CN102061895A Rear tong head of non-destructive oil pipe power tong |
| 05/18/2011 | CN102061894A Self-locking elevator |
| 05/18/2011 | CN102061892A Rotary drilling rig and drill rod assembly thereof |
| 05/17/2011 | CA2562817C Compensation system for a jacking frame |
| 05/17/2011 | CA2510137C Oilfield pipe-handling apparatus |
| 05/12/2011 | WO2011056711A2 Pipe stabilizer for pipe section guide system |
| 05/12/2011 | WO2011055090A1 Stiffener for a flexible pipe |
| 05/12/2011 | WO2011011505A3 Offshore drilling system |
| 05/12/2011 | WO2011000534A3 Drip mat |
| 05/12/2011 | WO2010146565A3 Drum load monitoring |
| 05/12/2011 | US20110109109 Grip extension linkage to provide gripping tool with improved operational range, and method of use of the same |
| 05/12/2011 | US20110108289 Quick-Change Drum Assembly |
| 05/12/2011 | US20110108275 Wellhead isolation protection sleeve |
| 05/12/2011 | US20110108265 Articulated apparatus for handling a drilling tool |
| 05/12/2011 | US20110108264 Articulated apparatus for handling a drilling tool |
| 05/12/2011 | CA2779612A1 Pipe stabilizer for pipe section guide system |
| 05/11/2011 | EP2320024A1 Top drive apparatus and method for facilitating removal of an item connected to a main shaft of a top drive |
| 05/11/2011 | EP2318642A1 Method and apparatus for making up and breaking out threaded tubular connections |