| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 01/20/2000 | WO2000003112A1 Floating spar for supporting production risers |
| 01/19/2000 | EP0972980A2 High-pressure fiber reinforced composite pipe joint |
| 01/18/2000 | US6015015 Insulated and/or concentric coiled tubing |
| 01/13/2000 | WO2000001920A1 Device for fitting an oil pipe stiffening sleeve on a support structure |
| 01/13/2000 | WO2000001919A1 A method of extending the length of a drill string, a drill string element and a coupling member |
| 01/13/2000 | WO2000001894A1 Well riser lateral restraint and installation system for offshore platform |
| 01/13/2000 | WO2000001239A2 Friction-reducing drill pipe component |
| 01/13/2000 | DE19831009A1 Bohrvorrichtung Drilling device |
| 01/12/2000 | CN2358219Y Hanging device for slips casing |
| 01/12/2000 | CN1240871A 直孔眼钻进系统 Straight perforations drilling system |
| 01/11/2000 | US6012744 Heavy weight drill pipe |
| 01/11/2000 | US6012537 Printed circuit board mounting for oil tools |
| 01/11/2000 | US6012529 Downhole guide member for multiple casing strings |
| 01/11/2000 | US6012525 Single-trip perforating gun assembly and method |
| 01/11/2000 | US6012523 Downhole apparatus and method for expanding a tubing |
| 01/05/2000 | EP0968352A1 Friction reducing tool |
| 01/05/2000 | EP0968351A1 Expandable slotted tubing string and method for connecting such a tubing string |
| 01/05/2000 | EP0839255A4 Safeguarded method and apparatus for fluid communication using coiled tubing, with application to drill stem testing |
| 01/05/2000 | DE19829535C1 Flexible, multicomponent downhole measurement device |
| 01/04/2000 | US6010278 Fairings for deepwater drilling risers |
| 01/04/2000 | US6010163 Threaded joint for connecting two pipes with a metal to metal seal |
| 01/04/2000 | US6009907 Flexible stiffener |
| 01/04/2000 | US6009611 Method for detecting wear at connections between pin and box joints |
| 12/29/1999 | WO1999067501A2 High pressure hydraulic line connector |
| 12/29/1999 | WO1999067499A1 Downhole guide member for multiple casing strings |
| 12/28/1999 | US6009216 Coiled tubing sensor system for delivery of distributed multiplexed sensors |
| 12/28/1999 | US6006845 Rotary drill bits for directional drilling employing tandem gage pad arrangement with reaming capability |
| 12/28/1999 | US6006830 Casing centraliser |
| 12/23/1999 | WO1999066170A1 Drill rod coupling |
| 12/23/1999 | WO1999066169A2 Device related to risers |
| 12/23/1999 | WO1999066168A1 Method of and apparatus for horizontal well drilling |
| 12/23/1999 | CA2333730A1 Device related to risers |
| 12/22/1999 | CN1239539A Oil well pipe |
| 12/21/1999 | US6004639 Suitable for use in the oil industry, |
| 12/21/1999 | US6004074 Marine riser having variable buoyancy |
| 12/21/1999 | US6004073 Double walled pipe, jacking method and pipe end structure of leading pipe |
| 12/21/1999 | US6003607 Wellbore equipment positioning apparatus and associated methods of completing wells |
| 12/21/1999 | US6003601 Methods of completing a subterranean well and associated apparatus |
| 12/16/1999 | WO1999064781A1 Pipeline monitoring systems |
| 12/16/1999 | WO1999064775A1 Drilling quick connectors |
| 12/16/1999 | WO1999064714A1 Centraliser |
| 12/16/1999 | WO1999064713A1 A drilling tool |
| 12/15/1999 | EP0964134A2 Power and signal transmission using insulated conduit for permanent downhole installations |
| 12/15/1999 | EP0963502A1 Downhole clutch with flow ports |
| 12/15/1999 | CN1238823A Method and device for production of hydrocarbons |
| 12/14/1999 | US6000482 Drilling pipe for directional boring |
| 12/14/1999 | US6000459 U-bend pipe spacer |
| 12/14/1999 | US6000438 Phase change insulation for subsea flowlines |
| 12/08/1999 | CN2352668Y Articulated joint for screw drilling rod |
| 12/08/1999 | CN2352667Y Embedment type disengement proof coupling for dilling rod |
| 12/08/1999 | CN2352666Y Hydraulic fraclional well cementing joint |
| 12/07/1999 | US5996713 Rolling cutter bit with improved rotational stabilization |
| 12/07/1999 | US5996712 Mechanical locking swivel apparatus |
| 12/07/1999 | US5996689 Conduit and continuous coiled tubing system |
| 12/07/1999 | CA2246398C Seal electrical conductor arrangement for use with a well bore in hazardous areas |
| 12/07/1999 | CA2111766C Flush round rod |
| 12/07/1999 | CA2070684C Drill bit for well slashing |
| 12/02/1999 | DE19831755C1 Extension for ground boring tool |
| 12/02/1999 | CA2273607A1 Coiled tubing drilling hydraulic disconnect |
| 12/01/1999 | EP0960299A1 Tubular end connection using snap ring |
| 12/01/1999 | EP0960298A1 Tubular end connection |
| 12/01/1999 | EP0960261A1 Tool and method for drilling a lateral well |
| 12/01/1999 | CN2351541Y Non-hoop double-stage synchronous screwed pipe |
| 12/01/1999 | CN1046987C Clamshell grab for drilling cylindrical holes |
| 12/01/1999 | CN1046976C Assembly for reinforcing well, special for drilling oil well |
| 11/30/1999 | US5992893 Connector |
| 11/30/1999 | US5992548 Bi-center bit with oppositely disposed cutting surfaces |
| 11/30/1999 | US5992547 Rotary drill bits |
| 11/30/1999 | US5992525 Apparatus and methods for deploying tools in multilateral wells |
| 11/30/1999 | US5992523 Latch and release perforating gun connector and method |
| 11/30/1999 | US5992468 Cable anchors |
| 11/30/1999 | US5992250 Apparatus for the remote measurement of physical parameters |
| 11/28/1999 | CA2443312A1 Expandable wellbore junction |
| 11/25/1999 | WO1999060245A1 Cleaning and lubricating device for threads, especially for drill pipes |
| 11/25/1999 | WO1999051851B1 Coil springs for cable support |
| 11/25/1999 | DE19827821C1 Joint for drill rod sections |
| 11/25/1999 | CA2334717A1 Cleaning and lubricating device for threads, especially for drill pipes |
| 11/24/1999 | EP0958095A1 Friction welded drill rod and method for manufacturing the rod |
| 11/24/1999 | EP0721539B1 Drill pipe tubing and casing protectors |
| 11/24/1999 | CN2350519Y Antitwisting device for screw drill |
| 11/24/1999 | CN1236414A Method and apparatus for attaching a casing to a drill bit in overburden drilling equipment |
| 11/23/1999 | US5990050 Useful in the drilling, completing and working over of subterranean wells, such as oil wells; continuous phase propylene glycol n-butyl ether(s) having viscosity less than 10 centipoise at 25 degrees c and stabilizing emulsifier |
| 11/23/1999 | US5988702 Composite coiled tubing end connector |
| 11/23/1999 | US5988301 Drill rod and method for its manufacture |
| 11/23/1999 | US5988300 Composite material structures having reduced signal attenuation |
| 11/23/1999 | US5988286 Cable anchor assembly |
| 11/18/1999 | WO1999058809A2 Coupling with shape-memory material, disconnecting tool with a piston and coupling with valves |
| 11/18/1999 | WO1999058807A1 Guide device |
| 11/17/1999 | EP0957233A2 Threaded connector |
| 11/17/1999 | EP0956425A1 Drill pipe/casing protector |
| 11/17/1999 | EP0956424A2 Method and device for driving bore holes, specially exploring and extraction drillings in the sea bottom |
| 11/17/1999 | EP0941200A4 Method and apparatus for disconnecting and retrieving multiple risers attached to a floating vessel |
| 11/16/1999 | US5984584 Fairings for drilling riser control pod hoses |
| 11/16/1999 | US5984568 Connector assembly for an expandable slotted pipe |
| 11/16/1999 | US5984030 Rock drilling tool, drill bit and a method of transferring percussive energy |
| 11/16/1999 | US5984029 High-load hydraulic disconnect |
| 11/16/1999 | US5984006 Emergency release tool |
| 11/11/1999 | WO1999057734A1 Flexible armored communication cable and method of manufacture |
| 11/11/1999 | WO1999057478A1 Heavy weight drill pipe |
| 11/11/1999 | WO1999057414A1 Apparatus, system and method for connecting coiled tubing to a member |