| 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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| 06/15/2004 | CA2240326C Improved measurement port coupler and probe interface |
| 06/10/2004 | US20040108142 Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 06/10/2004 | US20040108116 Valves for use in wells |
| 06/10/2004 | US20040108109 Drop ball catcher apparatus |
| 06/09/2004 | CN1502787A Logging while tripping with modified tubular |
| 06/08/2004 | US6745854 Electrically sequenced tractor |
| 06/08/2004 | US6745844 Hydraulic power source for downhole instruments and actuators |
| 06/06/2004 | CA2444648A1 Anchoring device for a wellbore tool |
| 06/03/2004 | US20040104031 Latch profile installation in existing casing |
| 06/03/2004 | DE69816743T2 Fiberoptische sensoren und ansteuervorrichtungen in bohrloechern Fiberoptic Sensors and Control devices in boreholes |
| 06/03/2004 | DE10251078B3 Abdichtungssystem für den Zwischenraum im Übergangsbereich zweier Brunnenrohre unterschiedlicher Durchmesser und Montagewerkzeug hierzu Sealing system for the gap in the transition region of two tubes of different diameter and fountain assembly tool for this purpose |
| 06/02/2004 | CN2619046Y Reverse pulling type oil pipe anchor |
| 06/01/2004 | US6742606 Method and apparatus for drilling and lining a wellbore |
| 05/27/2004 | WO2004044379A2 Downhole hydraulic control line connector |
| 05/27/2004 | US20040099424 Latch profile installation in existing casing |
| 05/27/2004 | US20040099423 Method and apparatus for expandable liner hanger with bypass |
| 05/27/2004 | DE10253123A1 Underground inspection device in particular suitable for vertical pipe, comprising rotating disks and soil conveyor worms |
| 05/25/2004 | US6739398 Liner hanger running tool and method |
| 05/25/2004 | US6739392 Forming a wellbore casing while simultaneously drilling a wellbore |
| 05/21/2004 | WO2004042185A1 Downhole cutting locator tool |
| 05/20/2004 | US20040094312 Expander for expanding a tubular element |
| 05/20/2004 | US20040094310 Volume compensated shifting tool |
| 05/20/2004 | US20040094305 Intervention module for a well |
| 05/19/2004 | CN2616663Y Packing taking-out device |
| 05/19/2004 | CN2616662Y Self-locking anchoring device |
| 05/19/2004 | CN2616661Y Unlocking machine |
| 05/18/2004 | US6736214 Running tool and wellbore component assembly |
| 05/18/2004 | CA2265223C Wellbore annulus packer apparatus and method |
| 05/13/2004 | US20040089480 Downhole motor locking assembly and method |
| 05/13/2004 | US20040089445 Downhole axial force generating tool |
| 05/12/2004 | CN2615325Y Oil well cable fixing protective casings |
| 05/12/2004 | CN1495335A Mechanism helping to make traction on flat surface and non-flat surface |
| 05/11/2004 | US6732822 Method and apparatus for handling tubular goods |
| 05/11/2004 | US6732806 One trip expansion method and apparatus for use in a wellbore |
| 05/11/2004 | US6732801 Apparatus and method for completing a junction of plural wellbores |
| 05/11/2004 | US6732792 Multi-well structure for accessing subterranean deposits |
| 05/06/2004 | WO2004038170A1 Multi-cycle downhole apparatus |
| 05/06/2004 | WO2004031529A3 Cementing through a side pocket mandrel |
| 05/06/2004 | US20040084219 Three-dimensional steering tool for controlled downhole extended-reach directional drilling |
| 05/06/2004 | US20040084190 Multi-cycle dump valve |
| 05/06/2004 | US20040084185 Cutting locator tool |
| 05/06/2004 | EP1181432B1 Method of creating a wellbore |
| 05/06/2004 | EP1163423B1 Core barrel |
| 05/05/2004 | CN2614261Y Valve replacing equipment for pressure pipe line |
| 05/04/2004 | CA2297003C Flow measurement mandrel |
| 04/29/2004 | WO2004035989A1 Mud pulse landing assembly for use in directional drilling |
| 04/29/2004 | US20040079531 Disconnect check valve mechanism for coiled tubing |
| 04/29/2004 | US20040079529 Apparatus and method for installation of subsea well completion systems |
| 04/29/2004 | US20040079528 Tubing anchor |
| 04/28/2004 | EP1412612A1 Downhole actuation system utilizing electroactive fluids |
| 04/28/2004 | EP1412607A1 Downhole motor lock-up tool |
| 04/28/2004 | EP1412605A2 Improved stabilizer for use in a drill string |
| 04/28/2004 | EP0988439B1 Casing annulus remediation system |
| 04/27/2004 | US6725936 Method for drilling a plurality of offshore underwater wells |
| 04/27/2004 | US6725927 Method and system for avoiding damage to behind-casing structures |
| 04/27/2004 | US6725919 Forming a wellbore casing while simultaneously drilling a wellbore |
| 04/22/2004 | WO2004020790A3 Method and apparatus for logging a well using fiber optics |
| 04/22/2004 | WO2004020774A3 Methods and systems to activate downhole tools with light |
| 04/22/2004 | WO2003016671A3 High power umbilicals for subterranean electric drilling machines and remotely operated vehicles |
| 04/21/2004 | EP1409837A1 Releasable connector |
| 04/21/2004 | EP1105620B1 Hydraulic well control system |
| 04/21/2004 | CN2612794Y Double acting throwing casting and dragging equipment |
| 04/20/2004 | US6722442 Subsurface apparatus |
| 04/20/2004 | US6722441 Threaded apparatus for selectively translating rotary expander tool downhole |
| 04/20/2004 | US6722428 Apparatus for suspending a pipe within a well casing |
| 04/20/2004 | US6722105 Method of making an inflatable gas bag for use as a borehole plug |
| 04/15/2004 | WO2004031533A2 Downhole ball dropping apparatus |
| 04/15/2004 | WO2004031532A1 Mono-trip well completion |
| 04/15/2004 | WO2004031529A2 Cementing through a side pocket mandrel |
| 04/15/2004 | WO2004031527A2 Appartus and methods for installing casing in a borehole |
| 04/15/2004 | US20040069496 Wellbore isolation apparatus, and method for tripping pipe during underbalanced drilling |
| 04/15/2004 | US20040069493 One-trip wellhead installation systems and methods |
| 04/15/2004 | US20040069488 Apparatuses and methods for deploying logging tools and signalling in boreholes |
| 04/15/2004 | CA2499727A1 Appartus and methods for installing casing in a borehole |
| 04/13/2004 | US6719063 Downhole gripping tool and method |
| 04/13/2004 | US6719056 Sand removal method |
| 04/13/2004 | CA2241027C Method and apparatus to isolate a formation zone |
| 04/08/2004 | WO2004029409A1 Surface controlled subsurface lateral branch safety valve |
| 04/08/2004 | WO2004029405A1 Locking apparatus with packoff capability |
| 04/08/2004 | WO2004029401A1 One-step directional coring or drilling system |
| 04/08/2004 | WO2004013457A3 Electric power control for sickline operations in wellbores |
| 04/08/2004 | US20040065445 Expanding tubing |
| 04/08/2004 | US20040065444 Pulsed deployment of a cable through a conduit located in a well |
| 04/08/2004 | US20040065439 Wellbores utilizing fiber optic-based sensors and operating devices |
| 04/08/2004 | CA2499119A1 Locking apparatus with packoff capability |
| 04/07/2004 | CN2610070Y Pull-up down-pass tubing anchor |
| 04/07/2004 | CN2610065Y Self-setting tubing anchor |
| 04/06/2004 | US6715560 Collet-cone slip system for releasably securing well tools |
| 04/06/2004 | US6715559 Gripper assembly for downhole tractors |
| 04/06/2004 | CA2233093C Assembly and process for drilling and completing multiple wells |
| 04/01/2004 | WO2004027200A2 Bottom plug for forming a mono diameter wellbore casing |
| 04/01/2004 | WO2004027198A2 Remote intervention logic valving method and apparatus |
| 04/01/2004 | WO2004026500A2 Self-lubricating expansion mandrel for expandable tubular |
| 04/01/2004 | US20040060710 Internal pressure indicator and locking mechanism for a downhole tool |
| 04/01/2004 | US20040060709 Apparatus and methods for installing casing in a borehole |
| 04/01/2004 | US20040060700 Method for drilling and casing a wellbore with a pump down cement float |
| 04/01/2004 | US20040060694 Kick over tool for side pocket mandrel |
| 04/01/2004 | CA2499071A1 Self-lubricating expansion mandrel for expandable tubular |
| 03/31/2004 | EP1402147A1 Multi-cycle downhole apparatus |
| 03/30/2004 | US6712152 Downhole plug holder and method |