| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 09/07/1992 | CA2061784A1 Articulated coupling for use with a downhole drilling aparatus |
| 09/03/1992 | WO1992014905A2 Device for the precise directional control of capping bores |
| 09/02/1992 | EP0500709A1 Pipe system with electrical conductors. |
| 09/02/1992 | CN1018076B Drill pipes and castings utilizing multi-conduit tubulars |
| 09/01/1992 | US5143411 Threaded tubular connection |
| 08/29/1992 | WO1992015815A1 Improvements in and relating to pipe connectors |
| 08/29/1992 | CA2101549A1 Pipe connectors |
| 08/26/1992 | EP0500206A2 Insulating composition |
| 08/26/1992 | EP0499737A1 Installation of conductors for offshore well platforms |
| 08/26/1992 | EP0344217B1 Connections for tubes made of composite materials |
| 08/25/1992 | US5142128 Oilfield equipment identification apparatus |
| 08/25/1992 | US5141275 Drill rod retrieval device |
| 08/25/1992 | US5141062 Tool actuator |
| 08/25/1992 | US5141060 Method for optimizing of stabilizer positioning in a bottomhole assembly to eliminate the effects of borehole inclination |
| 08/25/1992 | US5141057 Safety sleeve for a borehole communicating with an underground reserve of fluid under pressure, and associated safety system, and an associated borehole operating method |
| 08/25/1992 | US5141051 Electrical wet connect and check valve for a drill string |
| 08/20/1992 | WO1992014027A1 System for controlled drilling of boreholes along planned profile |
| 08/20/1992 | DE4104992A1 Vorrichtung zur zielgenauen steuerung von ueberlagerungsbohrungen A device for targeted control of about storage holes |
| 08/19/1992 | EP0498925A1 Device for connecting tubes insertable into wells and filled with bentonite |
| 08/19/1992 | CN1063710A Insulating composition |
| 08/18/1992 | US5139089 Well cleanout tool and method |
| 08/18/1992 | CA1306458C Drilling tool |
| 08/12/1992 | CN2112681U Non-stop drilling rod-changing continuously drilling device for verticle shaft oil pressure drilling machine |
| 08/11/1992 | US5138313 Electrically insulative gap sub assembly for tubular goods |
| 08/11/1992 | US5137310 Assembly arrangement using frustoconical screwthreads for tubes |
| 08/11/1992 | US5137087 Casing cementer with torque-limiting rotating positioning tool |
| 08/11/1992 | CA1306245C Drill bit with improved steerability |
| 08/06/1992 | DE4103215A1 Mining drill bit - has detachable head with pins secured in drill holes secured by transverse pins |
| 08/05/1992 | EP0497422A1 Downhole adjustable stabilizer |
| 08/05/1992 | EP0496981A2 Apparatus for laying pipelines without excavation |
| 08/05/1992 | EP0324756B1 High bending strength ratio drill string components |
| 08/05/1992 | CN2112000U Righting oil gas well casing bearing ring |
| 08/04/1992 | USRE34017 Increased tensile strength variable diameter protective joint |
| 08/04/1992 | US5135060 Articulated coupling for use with a downhole drilling apparatus |
| 08/04/1992 | US5135059 Borehole drilling motor with flexible shaft coupling |
| 08/04/1992 | US5135053 Treatment of well tubulars with gelatin |
| 08/04/1992 | CA1305984C Threaded fitting with seal for steel pipes |
| 07/29/1992 | EP0495833A1 Hydraulically actuated releasable connector and method for setting oil well liner |
| 07/29/1992 | CN2111357U Cement stopper seal type automatic pouring pipe drive shoe |
| 07/29/1992 | CN1063082A Method and system for conducting offshore well operations |
| 07/28/1992 | US5133578 Flexible joint with non-diffusive barrier |
| 07/28/1992 | US5133576 Carbide coated blast tube construction for use in oil and gas well completion across perforations |
| 07/28/1992 | US5133419 Hydraulic shock absorber with nitrogen stabilizer |
| 07/28/1992 | US5133412 Pull release device with hydraulic lock for electric line setting tool |
| 07/22/1992 | CN2110705U Device for centralising and vibration-obsorption of drill rod |
| 07/21/1992 | US5132624 Method and apparatus for insulating electrical devices in a logging sonde using a fluorinated organic compound |
| 07/21/1992 | US5131470 Shock energy absorber including collapsible energy absorbing element and break up of tensile connection |
| 07/21/1992 | US5131465 Perforating apparatus for circulating cement |
| 07/21/1992 | CA1305470C Flow through raise boring bit |
| 07/15/1992 | EP0494190A1 Anti-fouling covering for use in sub-sea structures. |
| 07/14/1992 | US5129689 Threaded tubular connection with outer threaded ring |
| 07/14/1992 | US5129452 Flexible electrical submersible motor pump system for deviated wells |
| 07/14/1992 | CA1304949C Quick-locking connector |
| 07/09/1992 | WO1992011461A1 Device for remotely operating an assembly comprising a bean/needle system, and use thereof in a drill string |
| 07/09/1992 | WO1992008875A3 Well completion system |
| 07/08/1992 | CN2109435U Integral solid sucker rod |
| 07/07/1992 | US5127784 Fatigue-resistant buttress thread |
| 07/07/1992 | US5127482 Expandable milling head for gas well drilling |
| 07/07/1992 | CA1304677C Grapple connection for coiled tubing |
| 07/01/1992 | CN2108790U Centralising device |
| 07/01/1992 | CN2108789U Trip-proof device for high strength sucker rod |
| 06/30/1992 | US5125692 Dry pneumatic system for hard rock shaft drilling |
| 06/30/1992 | US5125691 High pressure gas pipeline having concentric tubes and vent tubes |
| 06/30/1992 | US5125462 Quick-change ram boring head |
| 06/30/1992 | US5125148 Drill string torque coupling and method for making up and breaking out drill string connections |
| 06/29/1992 | WO1992012324A1 Device comprising two elements hinged in a plane, used in drilling equipment |
| 06/29/1992 | CA2076627A1 Device comprising two elements hinged in a plane, used in drilling equipment |
| 06/27/1992 | WO1992012376A1 Stiffener with reinforced structure |
| 06/27/1992 | CA2075906A1 Stiffener with reinforced structure |
| 06/25/1992 | DE4041303A1 Telescopic drill rod with insertions of absorbent materials - for reducing noise and vibration |
| 06/23/1992 | US5123829 Rod guide remover |
| 06/23/1992 | US5123492 Method and apparatus for inspecting subsurface environments |
| 06/19/1992 | WO1992011486A1 Coupling apparatus |
| 06/17/1992 | EP0490355A1 Drill with annular stop |
| 06/16/1992 | US5122209 Depressing twisted electrical conductors to the side of tubular member opposite the strip metal, welding |
| 06/16/1992 | US5121872 Method and apparatus for installing electrical logging cable inside coiled tubing |
| 06/16/1992 | CA1303432C Remotely controlled assembling and interlocking device |
| 06/13/1992 | CA2032022A1 Down hole drilling tool control mechanism |
| 06/11/1992 | WO1992009789A1 Rock bolt |
| 06/10/1992 | EP0489527A1 Downhole hydraulic shock absorber |
| 06/10/1992 | EP0489137A1 Production pipe having an integrated hydraulic line. |
| 06/09/1992 | US5119891 Adaptor for drilling strings with controllable air passage |
| 06/09/1992 | US5119889 Tunneling drill bit |
| 06/09/1992 | US5119876 Well tool |
| 06/09/1992 | CA1303017C Inner pipe member for dual-wall drill pipe assembly |
| 06/03/1992 | EP0488912A2 Frustoconical screwthread for tubes |
| 06/03/1992 | EP0488875A2 Perforating apparatus incorporating a shock absorber |
| 06/02/1992 | US5117913 Chemical injection system for downhole treating |
| 06/02/1992 | US5117911 Shock attenuating apparatus and method |
| 06/02/1992 | US5117685 Apparatus for testing an oil well, and corresponding method |
| 05/31/1992 | WO1992009782A1 Casing assembly for a down-the-hole drill tool |
| 05/31/1992 | CA2097307A1 Casing assembly for a down-the-hole drill tool |
| 05/29/1992 | WO1992008875A2 Well completion system |
| 05/27/1992 | WO1992009381A1 Twisted percussion drill rod and manufacturing method |
| 05/27/1992 | EP0486752A1 Directional drill string comprising a pipe with a shaft bearing |
| 05/26/1992 | US5116354 Recoverable sleeve assembly for pipe joint |
| 05/26/1992 | US5115863 Low turbulence rod guide |
| 05/26/1992 | US5115862 Electrical grounding device for wells |
| 05/26/1992 | CA1301641C Wireline cutting coupling for well drilling and logging, for extraction and for downhole operations |
| 05/26/1992 | CA1301635C Method of well construction |