| 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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| 05/19/2005 | WO2004023014A8 Threaded connection for expandable tubulars |
| 05/19/2005 | US20050103502 Collapsible expansion cone |
| 05/19/2005 | CA2636681A1 Selective collet |
| 05/19/2005 | CA2544161A1 A disconnect device |
| 05/18/2005 | CN2700545Y Lost circulation prevention valve seal device |
| 05/17/2005 | US6892816 Method and apparatus for selective injection or flow control with through-tubing operation capacity |
| 05/17/2005 | US6892811 Tubing string anchoring tool |
| 05/17/2005 | CA2140213C Lateral connector receptacle |
| 05/12/2005 | US20050098356 Auto-extending/retracting electrically isolated conductors in a segmented drill string |
| 05/12/2005 | US20050098350 Three dimensional steering system and method for steering bit to drill borehole |
| 05/12/2005 | US20050098325 Control system communication and lock open tool and method for locking open a safety valve and communicating with surface |
| 05/12/2005 | US20050098322 Self-propelled swabbing device and method |
| 05/11/2005 | EP1529151A1 Well abandonment apparatus |
| 05/11/2005 | EP1529150A2 Electric power control for sickline operations in wellbores |
| 05/11/2005 | CN2698961Y Bidirectional traceless tubing anchor |
| 05/11/2005 | CN2698958Y Hydraulic expansion reinforcing device for down-hole casing patch |
| 05/10/2005 | US6889771 Selective direct and reverse circulation check valve mechanism for coiled tubing |
| 05/10/2005 | CA2257432C Method and device for facilitating the insertion of a coiled tube into a well and for loosening stuck objects in a well |
| 05/04/2005 | EP1358426A4 Method of diminishing the size of the cross section of an opening of a hollow device located in a flow pipe |
| 05/04/2005 | EP0996812B1 Deformed multiple well template and process of use |
| 05/04/2005 | CN2697305Y Lock block type hydraulic releasing gadget |
| 04/28/2005 | US20050087348 Service tool with flow diverter and associated method |
| 04/28/2005 | US20050087344 System and Method to Control Multiple Tools Through One Control Line |
| 04/28/2005 | US20050087338 Disconnect device |
| 04/28/2005 | US20050087335 Deep set safety valve |
| 04/27/2005 | EP1287230A4 Method and system for performing operations and for improving production in wells |
| 04/27/2005 | CN2695623Y Tap for well repairing |
| 04/27/2005 | CN2695611Y Peristalsis compensator |
| 04/27/2005 | CN1199001C Method and equipment for obtaining data from underground rock |
| 04/26/2005 | US6883613 Flow control apparatus for use in a wellbore |
| 04/26/2005 | US6883612 Rod pump |
| 04/26/2005 | CA2356037C Live well heater cable |
| 04/26/2005 | CA2355224C Self-lubricating swage |
| 04/26/2005 | CA2341060C Method and apparatus for anchoring a tool within a cased borehole |
| 04/26/2005 | CA2236863C Down hole bypass valve |
| 04/21/2005 | US20050082055 Gripper assembly for downhole tools |
| 04/21/2005 | US20050082054 Gel release device |
| 04/21/2005 | US20050081358 Radial expansion of tubular members |
| 04/20/2005 | EP1341988B1 Bi-directional traction apparatus |
| 04/20/2005 | EP1242715B1 Lock assembly |
| 04/20/2005 | CN2693939Y Limiting anchoring teeth |
| 04/20/2005 | CN2693934Y Tubing anchor |
| 04/19/2005 | US6880642 Well abandonment plug |
| 04/19/2005 | US6880637 Full bore automatic gun release module |
| 04/19/2005 | CA2352598C Multilateral reference point |
| 04/19/2005 | CA2260381C Downhole motor tool |
| 04/14/2005 | US20050077051 Radial expansion of tubular members |
| 04/14/2005 | US20050077048 Downhole tubular splitter assembly and method |
| 04/14/2005 | US20050077046 Apparatus and methods for separating and joining tubulars in a wellbore |
| 04/13/2005 | EP1339950A4 Full bore automatic gun release module |
| 04/13/2005 | EP1315881A4 Method and system for perforating |
| 04/13/2005 | CN2692334Y Hydraulic back arrest dual purpose releasing gadget |
| 04/13/2005 | CN1605709A Down-hole traction apparatus for directional or horizontal well |
| 04/12/2005 | CA2321072C Electro-hydraulically controlled tractor |
| 04/12/2005 | CA2164442C Apparatus for use in a wellbore |
| 04/08/2005 | WO2005071216A1 A pulling tool device for use in tubulars and boreholes for oil- and gas production |
| 04/07/2005 | WO2005031115A1 Expandable wellbore assembly |
| 04/07/2005 | WO2005031110A1 Assembly for connecting a jumper to a subsea structure |
| 04/07/2005 | WO2004018824B1 Magnetic impulse applied sleeve method of forming a wellbore casing |
| 04/07/2005 | US20050074196 Gravel pack completion with fiber optic monitoring |
| 04/07/2005 | US20050072577 Apparatus for actuating a well tool and method for use of same |
| 04/07/2005 | US20050072572 Downhole bypass valve |
| 04/06/2005 | CN2690571Y Composite well top suspension reintering tool |
| 03/31/2005 | WO2004083591A3 Apparatus and method for radially expanding a wellbore casing using an adaptive expansion system |
| 03/31/2005 | US20050070150 Assembly for connecting a jumper to a subsea structure |
| 03/31/2005 | US20050067169 Modular weight bar |
| 03/30/2005 | CN2688874Y Device for anchoring, stabilizing, contacting and leakage preventing |
| 03/29/2005 | CA2290277C Swivel chamber for water actuated wireline drills |
| 03/24/2005 | WO2005026775A1 Closed-loop downhole resonant source |
| 03/24/2005 | WO2005005764A3 Spiral tubular tool and method |
| 03/24/2005 | WO2004076798A3 Apparatus for radially expanding and plastically deforming a tubular member |
| 03/24/2005 | WO2004020776A3 Well treatment apparatus and method |
| 03/24/2005 | US20050061518 Apparatus and method for installing casing in a borehole |
| 03/24/2005 | US20050061369 Mandrel for a gas lift valve |
| 03/24/2005 | DE10339868A1 Hammer drill bit has a pin that moves back and forth under pressure within a control sleeve |
| 03/24/2005 | CA2535887A1 Closed-loop downhole resonant source |
| 03/24/2005 | CA2442223A1 Self-propelled swabbing device |
| 03/23/2005 | EP0840834B1 Apparatus and process for drilling and completing multiple wells |
| 03/23/2005 | CN2687313Y Gas-lift valve working barrel |
| 03/23/2005 | CN2687312Y Gas-lift well pressure meter releasing device |
| 03/23/2005 | CN1599834A Downhole assembly releasable connection |
| 03/22/2005 | US6868913 Apparatus and methods for installing casing in a borehole |
| 03/22/2005 | US6868906 Closed-loop conveyance systems for well servicing |
| 03/22/2005 | US6868901 Tubular cutting tool |
| 03/22/2005 | CA2229800C Apparatus and method for performing imaging and downhole operations at work site in wellbores |
| 03/17/2005 | US20050056434 Collapsible expansion cone |
| 03/17/2005 | US20050056433 Mono diameter wellbore casing |
| 03/17/2005 | US20050056417 Hydraulic setting tool for packers |
| 03/16/2005 | EP1514006A1 Telemetering system |
| 03/16/2005 | CN2685541Y Special borehole ring plate for drilling well |
| 03/15/2005 | CA2188343C Horizontal inflation tool selective mandrel locking device |
| 03/10/2005 | WO2005021920A2 Downhole tubular splitter assembly and method |
| 03/10/2005 | US20050051343 Apparatus for facilitating the connection of tubulars using a top drive |
| 03/10/2005 | US20050051342 Liner running system and method |
| 03/09/2005 | EP1268975B1 Sand removal and device retrieval tool |
| 03/09/2005 | CN2683831Y One time drilling combined operation pipe column |
| 03/08/2005 | US6864801 Reservoir monitoring through windowed casing joint |
| 03/08/2005 | US6863137 Well system |
| 03/08/2005 | CA2210028C Hydrostatic tool with electrically operated setting mechanism |
| 03/03/2005 | WO2004053284A3 Isolated electrical connection in a drill string |