| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
|---|
| 01/24/1995 | CA2043164C Well tool |
| 01/20/1995 | CA2128363A1 Attachment device for composite rod |
| 01/18/1995 | EP0633965A1 Cut expansion joint sealing device for concrete dams and method for fitting same |
| 01/18/1995 | CN2187672Y Joint for pipe tandem |
| 01/18/1995 | CN1097391A Anchor with deoperable screw |
| 01/17/1995 | US5382121 Drill bit for use in concrete and asphalt |
| 01/17/1995 | US5382056 From a floating vessel to a subsea well |
| 01/17/1995 | CA2058488C Low turbulence rod guide |
| 01/12/1995 | WO1995001497A1 Telescoping conduits for increasing the fluid resistance of well production tubing |
| 01/12/1995 | WO1995001496A1 Arrangement in a rock drilling equipment |
| 01/12/1995 | DE4341824A1 Method of regenerating and securing a landfill site and apparatus for carrying out the method |
| 01/11/1995 | EP0633388A2 Drilling stabilizer |
| 01/10/1995 | US5379838 Apparatus for centralizing pipe in a wellbore |
| 01/10/1995 | US5379836 Clamps for use with well tubulars |
| 01/08/1995 | CA2125380A1 Drilling stabilizer |
| 01/05/1995 | WO1995000766A1 Shock absorbing assembly |
| 01/04/1995 | EP0632225A1 Improved anti-seizure protection for joints, particularly suitable for the petroleum sector |
| 01/04/1995 | EP0631646A1 Well conduit cutting and milling apparatus and method |
| 01/04/1995 | EP0631645A1 Down reaming apparatus |
| 01/03/1995 | US5377772 Drill string shock absorbers |
| 01/03/1995 | US5377763 Riser pipe assembly for marine applications |
| 01/03/1995 | US5377752 For use with a drop pipe positioned in a well casing |
| 01/03/1995 | US5377751 Apparatus and method for centralizing downhole pipe and blast joints |
| 12/28/1994 | EP0630455A1 Stabilized center-shoulder-sealed tubular connection |
| 12/27/1994 | US5375670 Drill string component for drilling with a liquid driven drilling machine |
| 12/27/1994 | US5375668 Borehole, as well as a method and an apparatus for forming it |
| 12/27/1994 | CA1333652C Method of forming a screw thread and tubular body with a screw thread |
| 12/22/1994 | WO1994029627A1 Pipe connection with non-dovetail interlocking wedge threads |
| 12/22/1994 | WO1994029569A1 Well cleaning tool with scratching elements |
| 12/22/1994 | WO1994029565A1 Multiple-seal underwater pipe-riser connector |
| 12/21/1994 | EP0629259A1 A method and a device for sealing between a casing and a drill hole in rock drilling operations. |
| 12/21/1994 | CN1096563A Universal anti-skew shock-absorbing joint |
| 12/20/1994 | US5373906 Orientable guide assembly and method of use |
| 12/20/1994 | US5373898 Rotary piston well tool |
| 12/14/1994 | EP0628700A2 A drilling tool for use in constructing large diameter boreholes |
| 12/14/1994 | EP0628127A1 Downhole tool for controlling the drilling course of a borehole. |
| 12/13/1994 | US5372548 Longitudinal and rotary shock absorber for rotary and percussion drill bits |
| 12/13/1994 | US5372208 Tube section having slots for sampling |
| 12/13/1994 | US5372192 Drag block for increasing the fluid resistance of well production tubing inadvertently dropped in a cased hole of an oil or gas well |
| 12/13/1994 | US5372154 System for cleaning threaded portions of tubular members |
| 12/09/1994 | CA2125341A1 Connector assembly for connecting two cylindrical members |
| 12/08/1994 | WO1994028450A1 Reduced diameter down-hole instrument cable |
| 12/07/1994 | EP0627040A1 Method for overburden drilling, casing shoe and casing tube for the method, and coupling element for the casing tubes |
| 12/07/1994 | CN2184774Y Support claw type tail tube suspension deice |
| 12/07/1994 | CN2184773Y AC electric heating oil pumping rod |
| 12/06/1994 | US5370545 Process and device for the electrical interconnecting of equipments such as well tools |
| 12/06/1994 | US5370186 Apparatus and method of perforating wellbores |
| 12/06/1994 | US5370183 Well casing guide string and repair method |
| 12/06/1994 | CA2032493C Recoverable sleeve assembly for pipe joint |
| 11/30/1994 | EP0494190B1 Anti-fouling covering for use in sub-sea structures |
| 11/30/1994 | CN1026812C Assisting spraying pipe apparatus freely suspended in deep well |
| 11/29/1994 | US5368114 Under-reaming tool for boreholes |
| 11/29/1994 | US5368110 Downhole rotary bearing sub |
| 11/29/1994 | US5368109 Apparatus for arcuate drilling |
| 11/29/1994 | US5368083 Telescopic kelly bar apparatus and method |
| 11/29/1994 | CA1333281C Straight hole drilling method and assembly |
| 11/24/1994 | WO1994027024A1 Drill pipe for directional drilling |
| 11/24/1994 | WO1994027023A1 Drill bit and other downhole tools |
| 11/24/1994 | DE4317037A1 Drilling apparatus |
| 11/23/1994 | EP0625396A1 Drilling tool |
| 11/23/1994 | CN2183442Y Guide driving device for screw drilling tool |
| 11/22/1994 | US5366030 Hydraulic device for forming a cavity in a borehole |
| 11/22/1994 | US5366018 Miniature rope socket assembly for combined mechanical and electrical connection in a borehole wireline |
| 11/22/1994 | US5366013 Shock absorber for use in a wellbore including a frangible breakup element preventing shock absorption before shattering allowing shock absorption after shattering |
| 11/22/1994 | US5366010 Retrievable bridge plug and a running tool therefor |
| 11/17/1994 | EP0624709A2 Drilling string connector |
| 11/17/1994 | EP0624706A2 Directional drilling system with integrated formation evaluation logging tool |
| 11/17/1994 | EP0624225A1 Multi-arm stabilizer for a drilling or boring device. |
| 11/15/1994 | US5363931 Drilling stabilizer |
| 11/15/1994 | US5363920 Elastomeric passive tensioner for oil well risers |
| 11/15/1994 | US5363545 Method of producing a coupling for oil country tubular goods |
| 11/15/1994 | CA2123357A1 Drilling connector |
| 11/13/1994 | CA2123273A1 Steerable motor system with integrated formation evaluation logging capacity |
| 11/10/1994 | WO1994025726A1 Seal electrical conductor arrangement for use with a well bore in hazardous areas |
| 11/10/1994 | WO1994025655A1 Preform or matrix tubular structure for well casing |
| 11/09/1994 | EP0397721B1 Tubular connection having a variable metal-to-metal seal width |
| 11/09/1994 | CN2182260Y Square holding-down clip for finish rod |
| 11/09/1994 | CN2182259Y Gripper block for pipe and cable |
| 11/08/1994 | US5362112 Pipe joint construction and coupling therefor |
| 11/08/1994 | US5361846 Apparatus and method for enhancing fatigue properties of subterranean well drill pipe immediate the area of securement to a tool joint |
| 11/08/1994 | US5361843 Method for completing a well |
| 11/02/1994 | EP0621919A1 Down-the-hole rock drill. |
| 11/01/1994 | US5360967 For identifying equipment/maintaining usage histories for items |
| 11/01/1994 | US5360242 Pipe connecting assembly and method for joining two lengths of steel pipe by a press-fit connection |
| 11/01/1994 | US5360239 Threaded tubular connection |
| 11/01/1994 | US5360063 Wear bushing with locking collet |
| 11/01/1994 | US5360062 Well tubing and tubing collar therefor |
| 10/27/1994 | CA2105415A1 Well tools |
| 10/26/1994 | CN2180772Y Protector for clamp of electric pump and cable |
| 10/25/1994 | US5358418 Wireline wet connect |
| 10/25/1994 | US5358289 Buttress-threaded tubular connection |
| 10/25/1994 | US5358285 Stress relief groove for drill pipe |
| 10/25/1994 | US5358042 High angle and horizontal wellbore centralizer and method of use |
| 10/25/1994 | US5358041 Rod guide |
| 10/25/1994 | US5358040 Method and apparatus for running a mechanical roller arm centralizer through restricted well pipe |
| 10/25/1994 | US5358039 Centralizer for a borehole |
| 10/25/1994 | CA2049907C Process of electric pipeline heating |
| 10/19/1994 | CN2179907Y Threaded connection casing joint |
| 10/18/1994 | US5355968 Tool joint stress relief groove |
| 10/18/1994 | US5355952 Method and device for establishing an intermittent electric connection with a stationary tool in a well |