| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 02/09/2011 | CN101967958A Sliding and rotating dual-purpose sucker rod centralizer |
| 02/09/2011 | CN101967952A Fall prevention device for torsional impacter |
| 02/09/2011 | CN101576183B Expansion sleeve joint with double hook shaped thread connection |
| 02/09/2011 | CN101424167B Underground travel increasing apparatus for sucker rod |
| 02/08/2011 | US7883293 Connector assembly for an off shore riser |
| 02/08/2011 | US7882892 Well having inductively coupled power and signal transmission |
| 02/08/2011 | US7882703 System and method for deployment of a cold water pipe |
| 02/06/2011 | CA2710998A1 Overshot tool and method |
| 02/03/2011 | WO2011014651A1 System, method and apparatus for subsea installation of buoyancy modules |
| 02/03/2011 | WO2011014565A2 Liner expansion system with a recoverable shoe assembly |
| 02/03/2011 | WO2011014440A1 A cable bypass and method for controlled entry of a tubing string and a cable adjacent thereto |
| 02/03/2011 | WO2011014090A1 Bottomhole assembly |
| 02/03/2011 | WO2011012967A1 Earth drilling machine |
| 02/03/2011 | WO2010137986A3 Method and system for transferring signals through a drill pipe system |
| 02/03/2011 | US20110027005 Fluid dispenser assembly |
| 02/03/2011 | US20110024103 Method and apparatus for providing a conductor in a tubular |
| 02/03/2011 | US20110024102 Completion system for subsurface equipment |
| 02/03/2011 | CA2769710A1 A cable bypass and method for controlled entry of a tubing string and a cable adjacent thereto |
| 02/03/2011 | CA2769283A1 Earth drilling machine |
| 02/02/2011 | EP2279324A1 Stator for use in helicoidal motor |
| 02/02/2011 | CN201730607U Mine drilling fire-proof safety protective device |
| 02/02/2011 | CN201730562U Cylindrical piling pore-forming drill rod with key groove |
| 02/02/2011 | CN201730561U Drill stem deviation prevention device |
| 02/02/2011 | CN201730560U Sucker rod string rotating anti-eccentric wear device for pumping well |
| 02/02/2011 | CN201730559U Self-rotating pumping rod centering device |
| 02/02/2011 | CN201730558U Centralizer for fixed oil pumping rod |
| 02/02/2011 | CN201730557U Wear resistant kelly-bar joint |
| 02/02/2011 | CN201730556U Explosion-proof testing collar |
| 02/02/2011 | CN201730555U Key-type telescopic drill rod for long-screw piling and boring drilling machine |
| 02/02/2011 | CN201730554U Novel oil pipe hot washing device |
| 02/02/2011 | CN201730553U Expansion pipe column for petroleum drill |
| 02/02/2011 | CN201730552U Hydraulic remote control locking device for expansion joint of ocean standpipes |
| 02/02/2011 | CN201730538U Low-gravity-center three-shaft spiral drilling machine |
| 02/02/2011 | CN101965458A Progressive cavity apparatus with transducer and methods of forming and use |
| 02/02/2011 | CN101962949A Long spiral double-pipe high-pressure stir-jet grouting pile construction method and device |
| 02/02/2011 | CN101962737A Multi-element alloyed ultrahigh-strength sucker rod steel and manufacturing method thereof |
| 02/01/2011 | US7880640 Wellbore communication system |
| 02/01/2011 | US7878273 Ultra-hard drilling stabilizer |
| 02/01/2011 | US7878241 Expandable centralizer for expandable pipe string |
| 01/27/2011 | WO2011011612A2 Wired conduit segment and method of making same |
| 01/27/2011 | WO2011011608A2 Apparatus and method for coupling conduit segments |
| 01/27/2011 | WO2011011574A2 Use of a spoolable compliant guide and coiled tubing to clean up a well |
| 01/27/2011 | WO2011011169A2 Self-adjusting in-flow control device |
| 01/27/2011 | WO2011010016A2 Drill pipe and corresponding drill fitting |
| 01/27/2011 | WO2010118015A9 Control of concentric tubing direction |
| 01/27/2011 | US20110017516 Non-rotating buoyancy modules for sub-sea conduits |
| 01/27/2011 | US20110017473 Slip ring apparatus for a rotary steerable tool |
| 01/27/2011 | US20110017466 Riser pipe with rigid auxiliary lines and offset connectors |
| 01/27/2011 | US20110017465 Riser support |
| 01/27/2011 | US20110017448 Zonal testing with the use of coiled tubing |
| 01/27/2011 | CA2797934A1 Bottom hole assembly with ported completion and methods of fracturing therewith |
| 01/27/2011 | CA2768865A1 Apparatus and method for coupling conduit segments |
| 01/27/2011 | CA2746522A1 Bottom hole assembly with ported completion and methods for fracturing therewith |
| 01/27/2011 | CA2711329A1 Bottom hole assembly with ported completion and methods of fracturing therewith |
| 01/26/2011 | EP2278115A1 Extension for a drilling rod |
| 01/26/2011 | EP2276904A1 Double pin connector and hydraulic connect with seal assembly |
| 01/26/2011 | CN201723180U Novel wear reducer |
| 01/26/2011 | CN201723179U Air-tight oil casing nipple |
| 01/26/2011 | CN201723178U Oil casing provided with spherical steps |
| 01/26/2011 | CN201723177U Oil bushing with double-step spherical seal surface and unequal spaced thread |
| 01/26/2011 | CN201723176U Oil casing with double-step tapered sealing surface |
| 01/26/2011 | CN201723175U Oil sleeve with conical step sealing surface and unequally spaced threads |
| 01/26/2011 | CN201723174U Connecting hoop for tapered step oil sleeve |
| 01/26/2011 | CN201723173U Air-permeable elevating device for rotary drilling rig |
| 01/26/2011 | CN201723172U Universal eccentric-wear-resistant collar of sucker rod |
| 01/26/2011 | CN201723171U Oil casing connector for narrow-gap well cementation |
| 01/26/2011 | CN201723170U Drill rod threaded nipple avoiding stress concentration |
| 01/26/2011 | CN201723169U High-twisting-resistance drilling rod joint with double sealing surfaces |
| 01/26/2011 | CN201723168U Oil casing with double-step tapered sealing surface and unequally spaced threads |
| 01/26/2011 | CN201723167U Oil casing with tapered steps |
| 01/26/2011 | CN201723166U Oil casing with spherical stepped sealing surface and unequally spaced threads |
| 01/26/2011 | CN201723165U Oil bushing with double-step spherical seal surface |
| 01/26/2011 | CN201723164U Bound sealing ring |
| 01/26/2011 | CN201723163U Integral upset drill rod |
| 01/26/2011 | CN201723162U Complete equipment for rolling and restoring sucker rod |
| 01/26/2011 | CN201723148U Water head |
| 01/26/2011 | CN101956540A Novel drill rod valve |
| 01/26/2011 | CN101956536A Rod carrying monitoring method and rod carrying prevention system for drill rod of rotary drilling machine |
| 01/26/2011 | CN101956535A Riser for drilling and extracting deep-sea petroleum (gas) |
| 01/26/2011 | CN101956534A Production technology of single-joint or integrated drill pipe |
| 01/26/2011 | CN101061290B Rock drill bit |
| 01/25/2011 | US7874380 Method and device for drilling, particularly percussion or rotary percussion drilling, a hole in soil or rock material |
| 01/25/2011 | US7874378 Vibratory and impact connector for a power tool |
| 01/25/2011 | US7874353 Bearing assembly retaining apparatus and well drilling equipment comprising same |
| 01/25/2011 | CA2610320C Casing shoe |
| 01/25/2011 | CA2585489C Sealed branch wellbore transition joint |
| 01/25/2011 | CA2574130C Tubing connection arrangement |
| 01/21/2011 | CA2707572A1 System for controlling elongation of a conduit within which flowable material is conveyed |
| 01/20/2011 | WO2011008908A2 Expansion system for expandable tubulars |
| 01/20/2011 | WO2011008835A2 Downhole intervention |
| 01/20/2011 | WO2011008834A2 Production riser |
| 01/20/2011 | WO2011008704A1 Double-ended flexible pipe joint having stacked co-axial primary and secondary annular elastomeric flex elements |
| 01/20/2011 | WO2011008431A2 Metal-to-metal annulus seal arrangement |
| 01/20/2011 | WO2011007084A1 Oil pipe suspension device, and installation method |
| 01/20/2011 | US20110011320 Riser technology |
| 01/20/2011 | CA2768168A1 Downhole intervention |
| 01/20/2011 | CA2768165A1 Production riser |
| 01/19/2011 | EP2275642A1 System for detection and monitoring of deep land subsidence |
| 01/19/2011 | EP2274526A1 Drive shaft assembly for a downhole motor |
| 01/19/2011 | EP2274498A2 Open-faced rod spinner |