| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 03/14/2002 | US20020029908 Electrically sequenced tractor |
| 03/14/2002 | US20020029886 Wellbore flow control device |
| 03/14/2002 | US20020029883 System and method for fluid flow optimization |
| 03/13/2002 | EP1185813A1 Thread form with multifaceted flanks |
| 03/13/2002 | EP1060321A4 An axle, a friction reducing fitting and an axle installation method |
| 03/13/2002 | EP1047859A4 Extruded casing centralizer |
| 03/13/2002 | CN2481841Y Thread drilling rod |
| 03/13/2002 | CN2481840Y Screw drilling rod |
| 03/13/2002 | CN2481839Y Oil pipe shock-absorbing trip preventing device |
| 03/13/2002 | CN1340128A Hydraulic underreamer and sections for use therein |
| 03/13/2002 | CN1080813C Method for attaching a casing to a drill bit in overburden drilling equipment |
| 03/13/2002 | CA2356203A1 Pressurized system for protecting signal transfer capability at a subsurface location |
| 03/12/2002 | US6354379 Oil well separation method and apparatus |
| 03/12/2002 | US6354376 Apparatus for transferring fluid between the seabed and a floating vessel |
| 03/12/2002 | US6354375 Lateral well tie-back method and apparatus |
| 03/12/2002 | US6354374 Method of performing downhole functions |
| 03/07/2002 | WO2002018739A1 Adjustable stabiliser for directional drilling |
| 03/07/2002 | WO2002018709A1 Protection of underwater elongate members |
| 03/07/2002 | WO2001069034A3 Wellbore circulation system, kelly bushing, kelly and tong |
| 03/07/2002 | US20020027363 Wedge thread with torque shoulder |
| 03/07/2002 | US20020026958 Cementing head |
| 03/06/2002 | EP1184537A2 A method of stimulating a well |
| 03/06/2002 | CN2480538Y Short connection type wax-scrapping stabilizer |
| 03/06/2002 | CN1339082A Multilateral well and electrical transmission system |
| 03/05/2002 | US6352115 Device for fitting an oil pipe stiffening sleeve on a support structure |
| 03/05/2002 | US6352114 Deep ocean riser positioning system and method of running casing |
| 03/05/2002 | US6352107 Wear resistant well pump rod and method for making same |
| 02/28/2002 | WO2002016727A2 Engineered material buoyancy system, device, and method |
| 02/28/2002 | WO2002016726A1 Pipe assembly |
| 02/28/2002 | WO2002016725A1 Method of mounting a tsp |
| 02/28/2002 | WO2002016724A2 Expandable coupling |
| 02/28/2002 | WO2002002904A8 Composite centraliser |
| 02/28/2002 | WO2001098701A8 Composite pipe assembly and method for its preparation |
| 02/28/2002 | WO2001073261A3 Riser with retrievable internal services |
| 02/28/2002 | US20020023782 Friction-reducing drill pipe component |
| 02/28/2002 | US20020023749 Casing centrliser |
| 02/27/2002 | EP1064192B1 Mooring construction |
| 02/27/2002 | EP1042583B1 Apparatus and method for injecting treatment fluids into an underground formation |
| 02/27/2002 | CN2479187Y Sucker rod nylon paraffin cutting centralizer |
| 02/27/2002 | CN2479186Y Drainage sucker rod connecting-tripping device |
| 02/27/2002 | CN1079888C Method and system for monitoring characteristic of earth formation in well |
| 02/27/2002 | CN1079882C Fluid-tight connecting apparatus |
| 02/27/2002 | CN1079879C Drilling device, drilling system and drilling method |
| 02/27/2002 | CN1079877C Device for drilling bore hole in the ground |
| 02/26/2002 | US6349779 Profiled element for rotary drilling equipment and drill rod comprising at least one profiled portion |
| 02/26/2002 | US6349778 Integrated transmitter surveying while boring entrenching powering device for the continuation of a guided bore hole |
| 02/26/2002 | US6349770 Telescoping tool |
| 02/26/2002 | US6349767 Disconnect tool |
| 02/21/2002 | WO2001033028A3 Apparatus, system, and method for installing and retrieving pipe in a well |
| 02/21/2002 | US20020020566 Working tool for a percussion power tool |
| 02/21/2002 | US20020020562 Boring apparatus |
| 02/21/2002 | US20020020526 Friction reduction means |
| 02/20/2002 | EP1180224A1 Scr top connector |
| 02/20/2002 | CN2477810Y Self-aligning roller centering guide |
| 02/20/2002 | CN2477809Y Hydraulic shock reduction anti-dropping appts. |
| 02/20/2002 | CN2477808Y Automatic enclosing single rod anti-blowout joint |
| 02/20/2002 | CN2477807Y Solid anti-dropping rod of screw pump |
| 02/19/2002 | US6347912 Installation for producing oil from an off-shore deposit and process for installing a riser |
| 02/19/2002 | US6347911 Vortex shedding strake wraps for submerged pilings and pipes |
| 02/19/2002 | US6347814 Integral joint for the connection of two pipes |
| 02/19/2002 | US6347674 Electrically sequenced tractor |
| 02/19/2002 | CA2278263C Improved rod guide |
| 02/19/2002 | CA2215558C Wear protector for a drilling tool |
| 02/14/2002 | WO2002012773A1 Pipe assembly |
| 02/14/2002 | WO2002012769A1 Screw threaded joint for continuous-profile tubes |
| 02/14/2002 | US20020019487 Grafted and crosslinkable pulverulent thermoplastic polyolefin composition which has elasticity and flexibility properties |
| 02/14/2002 | US20020017788 Pipe connector |
| 02/13/2002 | CN2476636Y Multifunction rope suspension apparatus for oil field beam-pumping unit |
| 02/13/2002 | CN1335449A Method of fixing the retaining ring of centering guide and wax scraper to pumping rod |
| 02/12/2002 | US6347292 Oilfield equipment identification method and apparatus |
| 02/07/2002 | WO2002010550A1 Liner hanger with standoffs |
| 02/07/2002 | WO2002010549A2 Drilling and lining method using a spoolable tubing |
| 02/07/2002 | WO2002010547A1 Directional drilling apparatus with shifting cam |
| 02/07/2002 | WO2001077491A3 Electropolishing method for oil field tubular goods and drill pipe |
| 02/07/2002 | WO2001051761A8 Steerable modular drilling assembly |
| 02/07/2002 | US20020014966 System and method for communicating information associated with a drilling component |
| 02/07/2002 | US20020014340 Composite pipe telemetry conduit |
| 02/07/2002 | US20020014337 Apparatus and method for installing a water well pump |
| 02/07/2002 | US20020014334 Auto-extending/retracting electrically isolated conductors in a segmented drill string |
| 02/06/2002 | CN2475822Y An energy-storing device for sucker rod column |
| 02/06/2002 | CN2475821Y A vibration-reducing device for drilling column |
| 02/06/2002 | CN2475820Y Pressure-reduction joint |
| 02/06/2002 | CN2475819Y A thin-wall diamond drill bit and connection structure of its tail grab |
| 02/06/2002 | CN2475818Y Hydraulic bend joint |
| 02/05/2002 | US6343657 Method of injecting tubing down pipelines |
| 02/05/2002 | US6343648 Down-hole tool with detachable cleaning pads |
| 01/31/2002 | WO2002008566A1 Couplings for rotary drill strings |
| 01/31/2002 | WO2002008565A1 Rod linkage |
| 01/31/2002 | WO2002008564A1 Cleaning and doping of tubulars |
| 01/31/2002 | WO2002008563A1 Method and device for rotary well drilling |
| 01/31/2002 | WO2001059249A3 Drill pipe torque-reduction and protection apparatus |
| 01/31/2002 | WO2001051759A3 Torque reduction tool |
| 01/31/2002 | US20020012837 Annular pack |
| 01/31/2002 | US20020011359 Directional drilling apparatus with shifting cam |
| 01/31/2002 | US20020011357 Fluid drilling system with drill string and retro jets |
| 01/31/2002 | US20020011334 Deformable gravel pack |
| 01/31/2002 | DE10034742A1 Werkzeug mit zugeordnetem Schlagwerkzeug Tool with an associated impact tool |
| 01/30/2002 | EP1175577A1 Threaded connection with high compressive rating |
| 01/30/2002 | EP1175547A1 Percussion drilling apparatus and drilling tube |
| 01/30/2002 | CN2474712Y Earthquake well drilling rod capable of protecting thread |