| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 01/30/2008 | CN201013526Y Down-hole turbogenerator |
| 01/30/2008 | CN201013296Y Rotating blowout preventer rubber core suspension adaptor |
| 01/30/2008 | CN201013260Y Drilling shoe |
| 01/30/2008 | CN201013259Y Highly anti-torsion oil pipe |
| 01/30/2008 | CN201013258Y Screwed joint of oil well pipe |
| 01/30/2008 | CN201013257Y Oil pipe coupling |
| 01/30/2008 | CN201013256Y Casing joint for heavy crude thermal production well |
| 01/30/2008 | CN201013255Y Back-off sub |
| 01/30/2008 | CN201013254Y Mechanically pressurizing adaptor |
| 01/30/2008 | CN201013253Y High-strength working pipe for oil test operation |
| 01/30/2008 | CN201013252Y Screw rod drilling plug pipe column communicator |
| 01/30/2008 | CN201013251Y Antiseptic abrasion-proof compound oil rod |
| 01/30/2008 | CN201013250Y Friction welding type down-hole oil pipe |
| 01/30/2008 | CN201013234Y Structure of drilling punching machine |
| 01/30/2008 | CN201013019Y Pile machine with drilling function |
| 01/30/2008 | CN101113661A Novel self-lubricating iron-based coatings coupling preparation process |
| 01/29/2008 | CA2487887C Tool module connector for use in directional drilling |
| 01/29/2008 | CA2467313C Field weldable connections |
| 01/29/2008 | CA2448691C Expandable tubular having improved polished bore receptacle protection |
| 01/29/2008 | CA2267508C Apparatus for static underground drilling |
| 01/24/2008 | WO2007133739A3 Reaming tool suitable for running on casing or liner and method of reaming |
| 01/24/2008 | WO2007070507A3 Flexible sinker bar with electrically conductive wires |
| 01/24/2008 | US20080018099 Protective compression and tension sleeves for threaded connections for radially expandable tubular members |
| 01/24/2008 | US20080017420 Sub Drilling Sub |
| 01/24/2008 | US20080017385 Buoyancy element and module |
| 01/24/2008 | US20080017373 Multiple zone downhole intelligent flow control valve system and method for controlling commingling of flows from multiple zones |
| 01/23/2008 | EP1881089A1 Fasteners coated with boron nitride and means for securing fasteners |
| 01/23/2008 | EP1880075A2 Flow through subassembly for a downhole drill string and method for making same |
| 01/23/2008 | EP1379804B1 Threaded connection |
| 01/23/2008 | EP1015802B1 Ultra high torque double shoulder tool joint |
| 01/23/2008 | CN201011298Y Centering guide for sucker rod |
| 01/23/2008 | CN201010692Y Automatic ultrasonic cleaning and phosphorizing device for 8 grooves type oil casing joint |
| 01/23/2008 | CN101109058A Steel for Immunizing ultra-fine crystal D grade sucker rod sucker rod and manufacturing method thereof |
| 01/23/2008 | CN100363511C Manufacturing technology of ultra high strength oil pumping rod |
| 01/22/2008 | US7321293 Integrated magnetic ranging tool |
| 01/22/2008 | US7320363 Energized slip ring assembly |
| 01/22/2008 | CA2386930C Positioning and conveying well apparatus and method |
| 01/22/2008 | CA2316142C Threaded union with high resistance to overtorque and compression |
| 01/22/2008 | CA2264090C Electrically insulating gap subassembly |
| 01/17/2008 | WO2008007970A1 Coupling device |
| 01/17/2008 | WO2008007820A1 Ram housing for pile driving hammer |
| 01/17/2008 | WO2008007066A1 Selective agitation of downhole apparatus |
| 01/17/2008 | WO2008006146A1 A roller reamer |
| 01/17/2008 | US20080014812 Buoyancy Control Systems for Tubes |
| 01/17/2008 | US20080012321 Resistance to fatigue of a threaded tubular connection |
| 01/17/2008 | US20080012320 Tubing connection arrangement |
| 01/17/2008 | CA2658162A1 Selective agitation of downhole apparatus |
| 01/17/2008 | CA2650481A1 Method and apparatus for building a tilted antenna |
| 01/16/2008 | CN201007188Y Grief stem water hose connecting fixing device |
| 01/16/2008 | CN201007187Y Split type centralizer |
| 01/16/2008 | CN201007186Y Lifting safety joint |
| 01/16/2008 | CN201007184Y Screw drilling tool drive axle anti-falling device |
| 01/15/2008 | US7319410 Downhole transmission system |
| 01/15/2008 | US7318689 Method and device for rock bolting |
| 01/15/2008 | US7318490 Connection design and sonde housing assembly for a directional drill |
| 01/15/2008 | US7318387 Water intake riser |
| 01/15/2008 | CA2487012C Method and apparatus to reduce downhole surge pressure using hydrostatic valve |
| 01/15/2008 | CA2449340C Wellbore apparatus and method |
| 01/10/2008 | WO2008005767A1 Stabbing guide adapted for use with saver sub |
| 01/10/2008 | WO2008005013A1 Tubular member connection |
| 01/10/2008 | WO2008004999A1 Closed loop drilling assembly with electronics outside a non-rotating sleeve |
| 01/10/2008 | WO2008004937A1 An extension joint and rod for percussive extension drillin |
| 01/10/2008 | WO2007106377A3 Manipulatable spider components adapted for cooperation with a vertically reciprocating control line guide |
| 01/10/2008 | US20080007060 Coupling tubulars |
| 01/10/2008 | US20080007059 Submersible pump drop pipe and casing assembly connection and method of manufacture |
| 01/10/2008 | US20080007056 Connector |
| 01/10/2008 | CA2659093A1 System and method for hard line communication with mwd/lwd |
| 01/10/2008 | CA2654533A1 Stabbing guide adapted for use with saver sub |
| 01/09/2008 | EP1339950B1 Full bore automatic gun release module |
| 01/09/2008 | CN201003382Y Rotary drill stabilizer |
| 01/09/2008 | CN201003381Y Hard centralizer |
| 01/09/2008 | CN201003380Y Forward and reversing device |
| 01/09/2008 | CN201003379Y Glue injection fire extinguishing-proof drilling tool for coal mine |
| 01/09/2008 | CN101103175A Gravel pack shut tube with control line retention and method for retaining control |
| 01/09/2008 | CN101100933A Centering paraffin scraper for sucker rod |
| 01/08/2008 | US7316277 Bottom hole assembly |
| 01/08/2008 | US7316276 Side entry apparatus and method |
| 01/08/2008 | US7316268 Method for conditioning wellbore fluids and sucker rod therefore |
| 01/08/2008 | CA2446115C Profiled recess for instrumented expandable components |
| 01/08/2008 | CA2420402C Electrical isolation connector subassembly for use in directional drilling |
| 01/08/2008 | CA2400820C Fatigue-resistant threaded bevelled tubular element |
| 01/03/2008 | WO2008002739A1 Epoxy-secured web collar |
| 01/03/2008 | US20080000698 Drilling stabilizer |
| 01/03/2008 | US20080000696 Downhole swivel joint |
| 01/03/2008 | CA2654543A1 Epoxy-secured web collar |
| 01/02/2008 | EP1871973A1 Flexible riser and method for pulling-in and hanging up thereof |
| 01/02/2008 | CN200999604Y Automatically reopening type air drilling down-hole extingiushment joint |
| 01/02/2008 | CN200999596Y Oil pumping rod guiders |
| 01/02/2008 | CN200999595Y Multifunctional movable joint |
| 01/02/2008 | CN200999594Y Compression type high-temperature heat insulation convexity inner pipe seal short piece |
| 01/02/2008 | CN101096905A Upside down fastened anti-dropping device used for pumping rod |
| 01/02/2008 | CN101096904A Downhole tool connecting separator |
| 01/01/2008 | US7314100 System for use in a bore hole for axially coupling a tubular end and a mandrel |
| 01/01/2008 | US7314099 Selectively actuatable expandable underreamer/stablizer |
| 12/29/2007 | CA2551315A1 Reciprocating pumping assembly and method with hollow sucker rods and no production tubing |
| 12/27/2007 | WO2007147257A1 Stabilizer for drill strings |
| 12/27/2007 | US20070295538 Polish rod clamp apparatus |
| 12/27/2007 | US20070295524 Adjusting device for positioning a load |
| 12/27/2007 | DE19947497B4 Bohrmaschine mit automatischem Gewindeausgleich Drilling machine with automatic thread compensation |
| 12/26/2007 | EP1870558A2 Top drive swivel apparatus and method |