| Patents for E21B 23 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells (12,712) |
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| 06/13/2001 | CN2434426Y Anti-dropping device of electric submerged pump |
| 06/12/2001 | US6244351 Pressure-controlled actuating mechanism |
| 06/12/2001 | US6244340 Self-locating reentry system for downhole well completions |
| 06/07/2001 | WO2001040615A1 Downhole device |
| 06/06/2001 | EP0888490B1 Mill for wellbore milling operations |
| 06/06/2001 | CN1066797C Tubular actuator component for use in a drill column |
| 06/05/2001 | US6241031 Electro-hydraulically controlled tractor |
| 06/05/2001 | US6241028 Method and system for measuring data in a fluid transportation conduit |
| 06/05/2001 | US6241023 Unlocking packer setting method and device |
| 06/05/2001 | US6241018 Hydraulic running tool |
| 06/05/2001 | US6241017 Caged slip system and release methods |
| 06/03/2001 | CA2327219A1 Fluid cut control device |
| 05/31/2001 | WO2001038690A1 Setting an annular seal |
| 05/31/2001 | WO2001038689A1 Device for manipulating a tool in a well tubular |
| 05/31/2001 | WO2001004520A8 Expandable joint connector |
| 05/31/2001 | CA2391435A1 Setting an annular seal |
| 05/30/2001 | CN1066514C Method and apparatus for intermittent production of oil using gas-lift plug |
| 05/29/2001 | US6237683 Wellbore flow control device |
| 05/25/2001 | WO2001036787A1 Downhole valve |
| 05/25/2001 | WO2001036784A1 Lock assembly |
| 05/25/2001 | WO2000046481B1 Downhole tractor |
| 05/25/2001 | CA2389621A1 Downhole valve |
| 05/24/2001 | US20010001429 Underbalanced well completion |
| 05/22/2001 | US6234854 Marine drive assembly |
| 05/22/2001 | US6234257 Deployable sensor apparatus and method |
| 05/22/2001 | US6234247 Bore hole safety valves |
| 05/17/2001 | WO2001025589A8 Packer system |
| 05/15/2001 | US6230813 Method of moving a puller-thruster downhole tool |
| 05/15/2001 | US6230812 Side pocket mandrel |
| 05/15/2001 | US6230808 Downhole apparatus |
| 05/15/2001 | US6230807 Valve operating mechanism |
| 05/15/2001 | US6230806 Apparatus and methods for locating tools in subterranean wells |
| 05/15/2001 | US6230796 System and device for optimizing use and installation of auxiliary equipment for down hole operations in wells |
| 05/09/2001 | EP1097760A2 Metal pipe expander |
| 05/09/2001 | CN2429622Y Special tool for repairing underground broken casing |
| 05/08/2001 | US6227313 Anti-torque tool |
| 05/08/2001 | US6227302 Apparatus and method for controlling fluid flow in a wellbore |
| 05/08/2001 | US6227298 Well isolation system |
| 05/08/2001 | US6227292 Flexible sinker bar assemblies |
| 05/08/2001 | CA2106754C Positioning device for a member and drilling-direction control device for a drilling system employing said positioning device |
| 05/03/2001 | WO2001031160A1 Method and apparatus for operations in underground/subsea oil and gas wells |
| 05/01/2001 | US6223824 Downhole apparatus |
| 04/30/2001 | CA2324573A1 Down hole tension/compression device for logging tools |
| 04/26/2001 | WO2001029367A1 Drillable inflatable packer & methods of use |
| 04/26/2001 | WO2001029362A1 Positioning and conveying well apparatus and method |
| 04/25/2001 | EP1094195A2 Packer with pressure equalizing valve |
| 04/25/2001 | EP1094194A2 Coiled tubing with an electrical cable for a down-hole pumping system and methods for manufacturing and installing such a system |
| 04/25/2001 | CN2427624Y Means for jacking-off sealing packinging over well pumping rod |
| 04/25/2001 | CN2427623Y Means for filling sealing packings over well pumping rod |
| 04/24/2001 | US6220360 Downhole ball drop tool |
| 04/19/2001 | WO2000077431A3 Expandable connector |
| 04/18/2001 | EP1092901A2 Method for removing and/or replacing an underground conduit |
| 04/17/2001 | US6216779 Downhole tool actuator |
| 04/12/2001 | WO2001025589A1 Packer system |
| 04/11/2001 | EP1091087A2 Measurement port coupler and probe interface |
| 04/11/2001 | EP1091084A1 Improved slick line system with real-time surface display |
| 04/10/2001 | US6213206 Hydraulically releasable coupling |
| 04/10/2001 | US6213204 High load, thin slip system |
| 04/10/2001 | US6213203 Lock mechanism for use with a downhole device |
| 04/10/2001 | US6213202 Separable connector for coil tubing deployed systems |
| 04/10/2001 | CA2156984C Decentralizing, centralizing, locating and orienting subsystems and methods for subterranean multilateral well drilling and completion |
| 04/05/2001 | WO2001023706A1 Re-entry in multilateral wellbores |
| 04/04/2001 | EP0852652A4 Method for isolating multi-lateral well completions while maintaining selective drainhole re-entry access |
| 04/03/2001 | US6209663 Underbalanced drill string deployment valve method and apparatus |
| 04/03/2001 | US6209653 Well lock with multiple shear planes and related methods |
| 04/03/2001 | US6209649 Selective re-entry tool for multiple tubing completions and method of using |
| 04/03/2001 | US6209640 Method of obtaining improved geophysical information about earth formations |
| 04/03/2001 | US6209636 Wellbore primary barrier and related systems |
| 04/03/2001 | US6209635 Positioning and conveying well apparatus and method |
| 04/03/2001 | US6209633 Apparatus and method for axially displacing a downhole tool or a tubing string in a well bore |
| 04/03/2001 | US6209391 Free fall survey instrument |
| 04/03/2001 | CA2222205C Spoolable coiled tubing completion system |
| 03/29/2001 | WO2001021935A1 Valve for use in wells |
| 03/28/2001 | EP1086294A1 Method and system for measuring data in a fluid transportation conduit |
| 03/27/2001 | US6206133 Clamped receiver array using tubing conveyed packer elements |
| 03/27/2001 | US6206114 Tool for transporting cutting means to and from a ground drill |
| 03/27/2001 | US6206112 Multiple lateral hydraulic drilling apparatus and method |
| 03/27/2001 | US6206101 Method and device for facilitating the insertion of a coiled tube into a well and for loosening stuck objects in a well |
| 03/27/2001 | CA2188531C Method and tool for use in commencing the drilling of a deviated well |
| 03/27/2001 | CA2154959C Steerable drilling tool and system |
| 03/22/2001 | WO2001020118A1 Downhole latch assembly and method of using the same |
| 03/21/2001 | EP0996812A4 Deformed multiple well template and process of use |
| 03/21/2001 | EP0852653A4 Method and apparatus for selective horizontal well re-entry using retrievable diverter oriented by logging means |
| 03/20/2001 | US6202752 Wellbore milling methods |
| 03/20/2001 | US6202746 Fail-safe coupling for a latch assembly |
| 03/20/2001 | CA2032837C Well probe uncoupled from a rigid connexion to the surface |
| 03/15/2001 | WO2001018354A1 Apparatus for and method of anchoring a first conduit to a second conduit |
| 03/14/2001 | EP1082516A1 System and method for deploying a plurality of tools into a subterranean well |
| 03/14/2001 | EP0677135B1 Method and apparatus for setting a whipstock |
| 03/13/2001 | US6199635 Shifting apparatus and method for use in tubular strings for selective orientation of tubular strings below the shifting apparatus |
| 03/13/2001 | US6199632 Selectively locking locator |
| 03/13/2001 | US6199628 Downhole force generator and method |
| 03/09/2001 | CA2281727A1 Single string rotary pump system |
| 03/08/2001 | WO2001016456A1 Releasable connector |
| 03/07/2001 | CN2422445Y Hydraulic drawing tool |
| 03/06/2001 | US6196766 Apparatus for movement along an underground passage and method using same |
| 03/06/2001 | US6196321 Wye block having automatically aligned guide structure |
| 03/06/2001 | US6196075 Device for inspection of pipes |
| 03/06/2001 | US6196064 In situ underground sample analyzing probe |
| 03/03/2001 | CA2281327A1 Torque anchor catcher |