| 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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| 02/27/2003 | US20030037931 Expandable packer, and method for seating an expandable packer |
| 02/27/2003 | US20030037927 Heater cable and method for manufacturing |
| 02/27/2003 | CA2454865A1 High power umbilicals for subterranean electric drilling machines and remotely operated vehicles |
| 02/26/2003 | EP0828920B1 A simplified sealing and anchoring device for a well tool |
| 02/26/2003 | EP0712499B1 Improved slick line system with real-time surface display |
| 02/26/2003 | CN2537808Y New upper vibrating device with drill |
| 02/26/2003 | CN1399704A Setting annular seal |
| 02/26/2003 | CN1399703A Device for manipulating tool in well tubular |
| 02/25/2003 | US6523613 Hydraulically actuated valve |
| 02/25/2003 | CA2238782C Method and apparatus for radially drilling through well casing and formation |
| 02/25/2003 | CA2190932C Bidirectional disappearing plug |
| 02/20/2003 | WO2002081857A3 Downhole weight bearing apparatus and method |
| 02/20/2003 | US20030034899 Remote closed system hydraulic actuator system |
| 02/20/2003 | US20030034177 High power umbilicals for subterranean electric drilling machines and remotely operated vehicles |
| 02/20/2003 | US20030034159 Combined sealing and gripping unit for retrievable packers |
| 02/20/2003 | US20030034156 Multi-function apparatus for adding a branch well sealed liner and connector to an existing cased well at low cost |
| 02/19/2003 | EP1283938A1 Braking device for tool strings |
| 02/13/2003 | WO2003012242A1 Downhole motor lock-up tool |
| 02/13/2003 | US20030029621 Locking telescoping joint for use in a conduit connected to a wellhead |
| 02/13/2003 | US20030029618 Method and system for moving equipment into and through an underground well |
| 02/12/2003 | EP1282758A1 Bypass valve |
| 02/11/2003 | US6516890 Apparatus and method for preventing the inadvertent activation of the actuating mechanism of a well tool |
| 02/11/2003 | US6516889 High-load big bore lock |
| 02/11/2003 | US6516886 Well isolation system |
| 02/06/2003 | US20030024710 Bi-directional grip mechanism for a wide range of bore sizes |
| 02/06/2003 | US20030024708 Structral support |
| 02/05/2003 | EP1281834A1 BI-Directional grip mechanism for a wide range of bore sizes |
| 02/04/2003 | US6513589 Hydraulic switch device |
| 01/30/2003 | WO2002044509A8 Tractor with improved valve system |
| 01/30/2003 | US20030019638 Procedures and equipment for profiling and jointing of pipes |
| 01/30/2003 | US20030019628 Bottom hole assembly |
| 01/30/2003 | US20030019622 Downhole actuation system utilizing electroactive fluids |
| 01/29/2003 | EP0951611B1 Wellbore tractor |
| 01/29/2003 | CN2533253Y Borehole oil pipe anchor device |
| 01/28/2003 | US6510898 Positioning assembly |
| 01/23/2003 | WO2003006790A1 Expandable liner hanger with bypass |
| 01/23/2003 | WO2003006781A1 Monobore retrievable whipstock |
| 01/23/2003 | US20030015319 Method and apparatus for improved communication in a wellbore utilizing acoustic signals |
| 01/21/2003 | US6508308 Progressive production methods and system |
| 01/16/2003 | WO2003004828A1 Multi-cycle downhole apparatus |
| 01/16/2003 | US20030010533 Mono-bore retrievable whipstock |
| 01/16/2003 | US20030010505 Oil well tubing injection system |
| 01/15/2003 | EP1274992A1 Apparatus and method for downhole well equipment and process management, identification, and actuation |
| 01/15/2003 | EP0824630B1 Mechanism for anchoring a well tool |
| 01/14/2003 | US6505684 Hydraulic actuator |
| 01/14/2003 | CA2017333C Subsea hanger and running tool |
| 01/09/2003 | WO2003002840A2 Improved stabilizer for use in a drill string |
| 01/08/2003 | EP1272727A2 Apparatus to actuate downhole tool |
| 01/08/2003 | CN2530024Y Oil well internal cable fixing protector |
| 01/08/2003 | CN2530023Y Self-sealing oil pipe anchoring device |
| 01/08/2003 | CN2530022Y Sand-proof hydraulic anchor for oil/gas field |
| 01/07/2003 | US6502640 Hydraulic actuator |
| 01/07/2003 | CA2215266C Apparatus and process for drilling and completing multiple wells |
| 01/03/2003 | WO2003001026A1 Tie back for use with expandable tubulars |
| 01/03/2003 | WO2001038690A8 Setting an annular seal |
| 01/02/2003 | EP1268975A2 Sand removal and device retrieval tool |
| 01/01/2003 | CN2528922Y Multiple fluid-pressure clamper |
| 12/31/2002 | US6499537 Well reference apparatus and method |
| 12/26/2002 | US20020195256 Downhole sealing |
| 12/26/2002 | US20020195253 Method and apparatus for open hole gravel packing |
| 12/26/2002 | US20020195252 Tie back for use with expandable tubulars |
| 12/26/2002 | US20020195247 Well-bore sensor apparatus and method |
| 12/25/2002 | CN2527699Y Oil-water-well liquid control antiscaling type hydraulic anchor |
| 12/25/2002 | CN1387602A Lock assembly |
| 12/24/2002 | US6497290 Method and apparatus using coiled-in-coiled tubing |
| 12/24/2002 | US6497288 Deviated borehole drilling assembly |
| 12/24/2002 | US6497286 Method and apparatus for drilling a plurality of offshore underwater wells |
| 12/19/2002 | US20020189818 Expandable downhole tubing |
| 12/18/2002 | EP1266119A1 Method and apparatus for handling tubular goods |
| 12/17/2002 | US6496342 Distributed monitoring and protection system for a distributed power network |
| 12/17/2002 | US6494269 Downhole apparatus for controlling fluid pressure |
| 12/17/2002 | US6494264 Wellbore flow control device |
| 12/12/2002 | WO2002086287A3 Conveying instrumentation within a borehole |
| 12/12/2002 | WO2002084073A3 Pressure wave expansion tool |
| 12/12/2002 | US20020185274 Apparatus and methods for expanding tubulars in a wellbore |
| 12/11/2002 | EP1064451B1 Pressure actuated downhole tool |
| 12/07/2002 | CA2697133A1 Apparatus and method for inserting and retrieving a tool string through well surface equipment |
| 12/05/2002 | WO2002097234A1 Line hanger, running tool and method |
| 12/04/2002 | EP1261801A1 Recirculatable ball-drop release device for lateral oilwell drilling applications |
| 12/03/2002 | US6488095 Method and apparatus for orienting a whipstock in an earth borehole |
| 12/03/2002 | US6488093 Deep water intervention system |
| 12/03/2002 | US6488092 By-pass valve |
| 12/03/2002 | US6488085 Method and apparatus for well logging and well control |
| 11/28/2002 | WO2002095183A1 Inner core barrel head assembly for core tube within a drill string |
| 11/28/2002 | WO2002095178A2 Apparatus for suspending a pipe within a well casing |
| 11/28/2002 | WO2002063203A3 Method of diminishing the size of the cross section of an opening of a hollow device located in a flow pipe |
| 11/28/2002 | US20020175474 Tubing seal |
| 11/28/2002 | US20020174992 Casing attachment method and apparatus |
| 11/28/2002 | US20020174991 One-trip wellhead installation systems and methods |
| 11/28/2002 | US20020174987 Sand removal and device retrieval tool |
| 11/26/2002 | CA2227642C Linear indexing apparatus with selective porting |
| 11/21/2002 | WO2002064942A3 Downhole packer |
| 11/21/2002 | US20020171560 Reservoir management system and method |
| 11/21/2002 | US20020170712 Well logging method & apparatus |
| 11/21/2002 | US20020170711 Apparatus and methods for conveying instrumentation within a borehole using continuous sucker rod |
| 11/21/2002 | US20020170710 Packer releasing system |
| 11/21/2002 | US20020170709 Apparatus for suspending a pipe within a well casing |
| 11/20/2002 | EP0880637B1 Hydraulically releasable coupling |
| 11/19/2002 | US6481497 High temperature high pressure retrievable packer with barrel slip |
| 11/19/2002 | CA2198565C Slidable access control device for subterranean lateral well drilling and completion |