| 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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| 06/23/2009 | US7549480 Device for performing a downhole operation |
| 06/23/2009 | US7549469 Adjustable swage |
| 06/23/2009 | CA2589332C Method and system for accessing subterranean deposits from the surface |
| 06/23/2009 | CA2523862C Apparatus for radially expanding and plastically deforming a tubular member |
| 06/18/2009 | WO2009076340A2 A downhole tool with shape memory alloy actuator |
| 06/18/2009 | WO2009045995A3 Liner drilling method and liner hanger |
| 06/18/2009 | WO2009042121A3 Externally activated seal system for wellhead |
| 06/18/2009 | US20090151937 Well thermal insulation for formation sampling of viscous fluids |
| 06/17/2009 | CN201258708Y Bidirectional slip tail tube hanger |
| 06/17/2009 | CN101460697A Well servicing methods and systems |
| 06/17/2009 | CN101460696A Compressible objects having a predetermined internal pressure combined with a drilling to form a variable density drilling mud |
| 06/16/2009 | US7546872 Liner hanger |
| 06/16/2009 | US7546871 Downhole tool |
| 06/11/2009 | WO2009073538A1 Downhole tool with capillary biasing system |
| 06/11/2009 | WO2009073357A2 High differential shifting tool |
| 06/11/2009 | WO2009050503A3 Anchoring device |
| 06/11/2009 | US20090145596 Guide tool for guiding downhole tools through wellbore restrictions |
| 06/05/2009 | CA2645948A1 High velocity string for well pump and method for producing well fluid |
| 06/04/2009 | WO2009070175A1 Screened valve system for selective well stimulation and control |
| 06/04/2009 | WO2009068316A1 System and method for drilling lateral boreholes |
| 06/04/2009 | WO2009050030A3 Device for controlling an inflatable tool used to treat a well or pipeline |
| 06/04/2009 | WO2009042401A4 Cast slip with preset carbide buttons |
| 06/04/2009 | US20090139732 Downhole swaging system and method |
| 06/04/2009 | US20090139730 Mechanical seal and lock for tubing conveyed pump system |
| 06/04/2009 | US20090139710 Swellable compositions and methods and devices for controlling them |
| 06/04/2009 | US20090139709 Self-boosting wedge tubing-to-casing seal |
| 06/04/2009 | US20090139322 Downhole 4d pressure measurement apparatus and method for permeability characterization |
| 06/04/2009 | CA2704834A1 Screened valve system for selective well stimulation and control |
| 06/03/2009 | EP2065553A1 System and method for drilling lateral boreholes |
| 06/03/2009 | EP2064411A2 Downhole hydraulic control system with failsafe features |
| 06/03/2009 | EP2064410A2 Systems and methods to retard rod string backspin |
| 06/03/2009 | EP2064409A2 Coiled tubing wellbore drilling and surveying using a through the drill bit apparatus |
| 06/03/2009 | CN201250627Y Underground seat-hanging ball seat |
| 06/03/2009 | CN201250626Y Wellhead suspension device adopting coiled tubing as production string |
| 06/02/2009 | US7540329 Casing coupler liner hanger mechanism |
| 06/02/2009 | CA2565589C Methods of completing a subterranean well and associated apparatus |
| 06/02/2009 | CA2541610C Downhole actuation tools |
| 06/02/2009 | CA2514596C Self-orienting selectable locating collet and method for location within a wellbore |
| 06/02/2009 | CA2440922C Downhole tool |
| 06/02/2009 | CA2332241C Wireless coiled tubing joint locator |
| 05/28/2009 | WO2009067298A1 Back pressure valve |
| 05/28/2009 | US20090133882 Method and apparatus for downhole artificial lift system protection |
| 05/27/2009 | CN201246123Y Pressure test hanger with rod |
| 05/27/2009 | CN201246122Y Novel throwing and salvaging machine |
| 05/27/2009 | CN101443529A Frac system without intervention |
| 05/26/2009 | US7537060 Coupler retained liner hanger mechanism and methods of setting a hanger inside a wellbore |
| 05/26/2009 | US7537055 Method and apparatus for forming a window in a casing using a biasing arm |
| 05/26/2009 | US7537052 Ball dropping tool method and apparatus |
| 05/26/2009 | CA2438807C Mono-diameter wellbore casing |
| 05/26/2009 | CA2356184C Tubing anchor |
| 05/26/2009 | CA2311160C Method for drilling and completing a wellbore and a pump down cement float collar for use therein |
| 05/22/2009 | WO2009062718A2 Anchoring systems for drilling tools |
| 05/21/2009 | US20090126945 Anchoring and sealing system for cased hole wells |
| 05/21/2009 | US20090126936 Actuating mechanism |
| 05/21/2009 | US20090126933 Device and method for retrieving debris from a well |
| 05/21/2009 | US20090126926 Torque anchor |
| 05/20/2009 | CN201241644Y Tool special for changing electric screw pump well package |
| 05/20/2009 | CN101435315A Method for positioning annular framework type sieve tube segment |
| 05/19/2009 | CA2564190C Hydraulically set concentric packer with multiple umbilical bypass through the piston |
| 05/19/2009 | CA2373498C Pressure sensor assembly for wellbore |
| 05/14/2009 | US20090120637 Tagging a Formation for Use in Wellbore Related Operations |
| 05/13/2009 | CN201236687Y Renewedly entrance guiding device for injection string and feeding-discharging tool |
| 05/13/2009 | CN201236654Y Oil field shaft mouth clamping seat |
| 05/13/2009 | CN201236653Y Feeding/retracting tool of oil layer protection valve |
| 05/13/2009 | CN201236652Y Feeding and extracting tool of guiding device |
| 05/13/2009 | CN201236651Y Feeding and salvaging tool of electronic single/multi-point measurement instrument suitable for gas drilling |
| 05/13/2009 | CN101429858A Oil field shaft mouth clamping seat |
| 05/13/2009 | CN101429857A Design method for maximum torque of well drilling seat suspension liner tube |
| 05/13/2009 | CN101429850A Branching well seat suspension liner tube hydraulic booster expansion system |
| 05/13/2009 | CN101429849A Design method for branching well seat suspension system expanding prick |
| 05/12/2009 | US7530401 Tool trap assembly and method |
| 05/12/2009 | US7530400 Downhole tool for selectively catching balls in a well bore |
| 05/12/2009 | CA2441660C Downhole pumping system |
| 05/12/2009 | CA2359236C Up-hole overshot and safety drilling apparatus |
| 05/09/2009 | CA2643505A1 Apparatus and method for deliquifying a well |
| 05/07/2009 | WO2009056842A2 Object manoeuvring apparatus |
| 05/07/2009 | WO2009056839A2 Tool storage assembly |
| 05/07/2009 | US20090114402 Method and Device for Drilling, Particularly Percussion or Rotary Percussion Drilling ,a Hole in Soil or Rock Material |
| 05/07/2009 | US20090114401 Plug |
| 05/07/2009 | US20090114400 Downhole resettable clutch swivel |
| 05/07/2009 | US20090114383 Gas lift apparatus for flushing and snubbing well |
| 05/07/2009 | CA2704477A1 Object manoeuvring apparatus |
| 05/07/2009 | CA2704303A1 Tool storage assembly |
| 05/06/2009 | CN201232531Y High-pressure fracturing sand prevention waterpower anchor |
| 04/30/2009 | WO2009055319A1 Setting tool for expandable liner hanger and associated methods |
| 04/30/2009 | WO2009053669A1 Apparatus and method for ratcheting stimulation tool |
| 04/30/2009 | WO2009053264A1 Running tool |
| 04/30/2009 | US20090107684 Applications of degradable polymers for delayed mechanical changes in wells |
| 04/30/2009 | CA2780762A1 Setting tool for expandable liner hanger and associated methods |
| 04/30/2009 | CA2701955A1 Setting tool for expandable liner hanger and associated methods |
| 04/30/2009 | CA2701909A1 Apparatus and method for ratcheting stimulation tool |
| 04/29/2009 | EP2053194A1 Running tool |
| 04/29/2009 | CN201228533Y Acidizing packer |
| 04/29/2009 | CN201228530Y Anchoring means for oil pipe |
| 04/29/2009 | CN101421485A Method and system for controlling a downhole flow control device |
| 04/28/2009 | CA2529855C Method and apparatus for formation testing |
| 04/28/2009 | CA2527161C Toolguide for creating deviated borehole branches from a well bore |
| 04/28/2009 | CA2526877C Whipstock for mounting in a casing section |
| 04/28/2009 | CA2444425C Apparatus and method for transporting, deploying, and retrieving arrays having nodes interconnected by sections of cable |
| 04/23/2009 | WO2009051490A1 Casing device |