| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 04/24/2002 | EP1198658A1 Method of creating a weld in a wellbore |
| 04/24/2002 | CN2487861Y Weighting eccentrically wear preventing device for sucker rod |
| 04/24/2002 | CN2487860Y Screw pipe hoop for jointing motor-pumped well pipe |
| 04/24/2002 | CN1346555A Method and apparatus for determining position in pipe |
| 04/23/2002 | US6375895 Carbon, chromium, molbdenum and iron; wear resistance; welding; noncracking; tool joints; stabilizers in oil and gas well drilling |
| 04/23/2002 | US6374924 Downhole drilling apparatus |
| 04/23/2002 | US6374916 Method and apparatus for stiffening an output shaft on a cutting tool assembly |
| 04/23/2002 | US6374914 Duel completion bop centralizer |
| 04/23/2002 | CA2082874C Metering and acting device for drilling, mounting process and use in a well |
| 04/18/2002 | WO2002031313A1 A drilling tool used in horizontal drilling applications |
| 04/18/2002 | WO2002031312A2 Drill string member |
| 04/18/2002 | US20020043408 Drill bit for directional drilling |
| 04/18/2002 | US20020043369 Petroleum well having downhole sensors, communication and power |
| 04/17/2002 | EP1197631A2 Apparatus for releasably connecting a wireline to a downhole tool |
| 04/17/2002 | EP1196713A1 Swivel apparatus |
| 04/17/2002 | EP0865562B1 Tubing connector |
| 04/17/2002 | CN2486729Y Drilling rod tapered thread pumping rod of screw pump well |
| 04/17/2002 | CN2486728Y Tapered thread pumping rod of screw pump well |
| 04/17/2002 | CN1345396A Method of making conductive downhole wire line system |
| 04/16/2002 | US6371224 Threaded spacer |
| 04/16/2002 | US6371211 Method of creating a weld in a wellbore |
| 04/16/2002 | US6371209 Casing installation and removal apparatus and method |
| 04/16/2002 | US6371203 Method of creating a wellbore in an underground formation |
| 04/11/2002 | WO2002029208A1 Method and system for increasing tubing resistance to pressure |
| 04/11/2002 | WO2002029207A1 Method and system for tubing a borehole in single diameter |
| 04/11/2002 | WO2002029199A1 Method and apparatus for casing expansion |
| 04/11/2002 | WO2002029196A2 Improved well testing system |
| 04/11/2002 | US20020040787 Forming a wellbore casing while simultaneously drilling a wellbore |
| 04/11/2002 | CA2595540A1 Method and apparatus for casing expansion |
| 04/11/2002 | CA2430243A1 Method and system for increasing tubing resistance to pressure |
| 04/11/2002 | CA2430240A1 Method and system for tubing a borehole in single diameter |
| 04/11/2002 | CA2419806A1 Method and apparatus for casing expansion |
| 04/10/2002 | EP1194677A1 Device connecting the sea floor with the surface comprising a submarine pipeline attached to at least one floater |
| 04/10/2002 | EP1194676A1 Riser system |
| 04/10/2002 | EP0897502B1 Tubing connector |
| 04/10/2002 | EP0886554B1 Friction welded product for rock drilling and method for manufacturing the product |
| 04/10/2002 | CN2485410Y Stabilizer for underground tools |
| 04/10/2002 | CN2485409Y Protector for sucker rods on hole top |
| 04/10/2002 | CN2485408Y Rigid anti-twist and anti-drop sucker rods |
| 04/09/2002 | US6369344 Substrate facing method, body and kit |
| 04/09/2002 | US6367846 Connector for pipe sections having integral buoyancy cans |
| 04/09/2002 | US6367567 Lockable drill steel and chuck assembly |
| 04/09/2002 | US6367565 Means for detecting subterranean formations and monitoring the operation of a down-hole fluid driven percussive piston |
| 04/09/2002 | US6367564 Apparatus and method for providing electrical transmission of power and signals in a directional drilling apparatus |
| 04/09/2002 | US6367557 Tapered connector for a tubing string |
| 04/09/2002 | US6367556 Multiple configuration centralizer device and method for using same |
| 04/09/2002 | US6367554 Riser method and apparatus |
| 04/09/2002 | US6367552 Hydraulically metered travel joint |
| 04/04/2002 | WO2002027228A2 Data resource mounted within a threaded pipe coupling |
| 04/04/2002 | WO2001092768A3 Multi-passage pipe assembly |
| 04/04/2002 | US20020038727 Drill pipe protector assembly |
| 04/03/2002 | EP1192331A1 Method of deploying an electrically driven fluid transducer system in a well |
| 04/03/2002 | EP0877702B1 System for anchoring ships |
| 04/03/2002 | CN2484401Y Oil-pipe rotating device |
| 04/03/2002 | CN2484400Y Hydraulic casing centering guide |
| 04/03/2002 | CN1343171A Floating offshore construction and floating element |
| 04/02/2002 | US6365268 Deep sea insulation material |
| 04/02/2002 | US6364039 Vibration damping tool |
| 04/02/2002 | US6364038 Downhole flexible drive system |
| 04/02/2002 | US6364024 Blowout preventer protector and method of using same |
| 04/02/2002 | US6364022 Hybrid riser for deep water |
| 04/02/2002 | US6364021 Well management system and method of operation |
| 04/02/2002 | US6363598 Method of assembling pipe joints |
| 03/28/2002 | WO2002025060A1 Shunting of a well stream |
| 03/28/2002 | WO2002025057A1 Apparatus comprising bistable structures for use in oil and gas wells |
| 03/28/2002 | WO2002025054A1 Quick release drill bit for down-hole drills |
| 03/28/2002 | WO2002025051A2 Jar with electrical conductor |
| 03/28/2002 | WO2001065718A3 Wireless power and communications cross-bar switch |
| 03/28/2002 | US20020036085 Toroidal choke inductor for wireless communication and control |
| 03/28/2002 | CA2422800A1 Apparatus comprising bistable structures for use in oil and gas wells |
| 03/27/2002 | EP1190158A1 Hydraulic setting tool |
| 03/27/2002 | EP1129272A4 Method and apparatus for remote control of a tubing exit sleeve |
| 03/27/2002 | EP1097287A4 Floating spar for supporting production risers |
| 03/27/2002 | CN1341504A Continuous pumping rod welding tractor |
| 03/27/2002 | CN1341503A Continuous pumping rod welding process |
| 03/27/2002 | CN1081716C Adapter for oil well tubings |
| 03/26/2002 | US6362428 System for attaching and sealing a gauge housing assembly to the end of an armored insulated electrical conductor |
| 03/26/2002 | US6361841 Oil well pipe |
| 03/26/2002 | US6361299 Composite spoolable tube with sensor |
| 03/26/2002 | US6360769 Multiple plug container |
| 03/26/2002 | CA2231651C Coiled tubing friction reducer |
| 03/26/2002 | CA2047555C Process and drilling equipment for sinking a well in underground rock formations |
| 03/21/2002 | WO2002023008A2 Methods and apparatus for forming a lateral wellbore |
| 03/21/2002 | WO2001051837A3 System and method for the connection of a two-piece drill pipe protector |
| 03/21/2002 | US20020035448 Oilfield equipment identification method and apparatus |
| 03/21/2002 | US20020033603 Threaded connector |
| 03/21/2002 | US20020033262 Multi-purpose float equipment and method |
| 03/21/2002 | US20020033078 Method for mounting a casing shoe on a drilling appatatus |
| 03/21/2002 | DE10042925A1 Drilling platform chuck, comprises support drum, upper and lower gear rims, coupling plate and adjustment plate, all with missing segment sections |
| 03/20/2002 | EP1188265A1 Method and apparatus for determining position in a pipe |
| 03/20/2002 | EP0901558A4 Sectional drive system |
| 03/20/2002 | CN1340657A Reelable continuous sucker rod made of steel and its making method |
| 03/20/2002 | CN1081282C Extension drlling system and lengthening drilling rod |
| 03/19/2002 | US6357538 Bit torque limiting device |
| 03/19/2002 | US6357485 Composite spoolable tube |
| 03/14/2002 | WO2002020943A1 Electrical submersible pumps in the riser section of subsea well flowline |
| 03/14/2002 | WO2001071149A3 Drill bit stabilizer and method of use |
| 03/14/2002 | WO2000066928A9 Threaded connection with high compressive rating |
| 03/14/2002 | US20020032126 Borehole retention device |
| 03/14/2002 | US20020030144 Cable protector and support |