| 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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| 04/29/2008 | US7363985 Hydraulic latch for capillary tubing string |
| 04/29/2008 | US7363984 System for radially expanding a tubular member |
| 04/29/2008 | US7363967 Downhole tool with navigation system |
| 04/29/2008 | CA2537502C Separable plug for use in a wellbore |
| 04/29/2008 | CA2408898C Well reference apparatus and method |
| 04/29/2008 | CA2290894C Well logging tool |
| 04/24/2008 | WO2007056732A3 Method and apparatus for downhole tubular expansion |
| 04/24/2008 | US20080093090 Sonde Deployment |
| 04/24/2008 | CA2661518A1 Activating device for a downhole tool |
| 04/23/2008 | EP1914380A1 Expandable wellbore junction |
| 04/23/2008 | CN201050317Y Suspension sub of auxiliary bushing |
| 04/23/2008 | CN201050316Y Snubbing environment-friendly operation hydraulic control anchor for water injection well |
| 04/23/2008 | CN201050315Y Locking device |
| 04/23/2008 | CA2565220A1 Apparatus and method for installing wellbore string devices |
| 04/22/2008 | US7360604 Expander system for stepwise expansion of a tubular element |
| 04/22/2008 | US7360594 Drilling with casing latch |
| 04/22/2008 | US7360591 System for radially expanding a tubular member |
| 04/22/2008 | CA2524666C Wellbores utilizing fiber optic-based sensors and operating devices |
| 04/22/2008 | CA2447308C Method and apparatus for cleaning a fractured interval between two packers |
| 04/22/2008 | CA2326900C Apparatus and method for enhancing remote sensor performance |
| 04/22/2008 | CA2238334C Autonomous downhole oilfield tool |
| 04/17/2008 | US20080087438 Self-propelled swabbing device and method |
| 04/16/2008 | EP1581718B1 Anchoring device for a wellbore tool |
| 04/16/2008 | CN201047261Y Hydraulic anchoring device |
| 04/16/2008 | CN101161982A Hydraulic buckling type tail pipe hanger |
| 04/16/2008 | CN101161981A Hydraulic mechanical double-action buckling type tail pipe hanger |
| 04/15/2008 | US7357198 Downhole apparatus |
| 04/15/2008 | US7357190 Radial expansion of tubular members |
| 04/15/2008 | US7357189 Seal |
| 04/15/2008 | CA2430303C Improvements to disconnect devices |
| 04/15/2008 | CA2418758C Interactive and/or secure activation of a tool |
| 04/15/2008 | CA2282342C Bottomhole assembly and methods of use |
| 04/15/2008 | CA2225570C Method and apparatus for making a pig in a vertical riser pipe |
| 04/09/2008 | CN101158281A Cement through side pocket mandrel |
| 04/09/2008 | CN101158276A Anti-jack slips anchoring propulsion mechanism |
| 04/09/2008 | CN101158275A Friction device |
| 04/09/2008 | CN101158267A Method and system for accessing subterranean deposits from the surface |
| 04/08/2008 | US7353886 Tractor with improved valve system |
| 04/08/2008 | US7353879 Biodegradable downhole tools |
| 04/08/2008 | US7353871 Downhole automatic tool release and method of use |
| 04/08/2008 | CA2616182A1 Dual-stage valve straddle packer for selective stimulation of wells |
| 04/08/2008 | CA2443140C Internal pressure indicator and locking mechanism for a downhole tool |
| 04/08/2008 | CA2441242C Pressure sensor insert for a downhole tool |
| 04/03/2008 | US20080078559 Griper assembly for downhole tools |
| 04/03/2008 | US20080078558 Subsurface lubricator and method of use |
| 04/03/2008 | US20080078557 Subsurface lubricator and method of use |
| 04/02/2008 | CN100378290C Pump plug |
| 04/01/2008 | US7350589 Telemetering system |
| 04/01/2008 | US7350588 Method and apparatus for supporting a tubular in a bore |
| 04/01/2008 | US7350585 Hydraulically assisted tubing expansion |
| 04/01/2008 | US7350584 Formed tubulars |
| 04/01/2008 | US7350583 One trip string tensioning and hanger securing method |
| 04/01/2008 | US7350569 Separable plug for use in a wellbore |
| 04/01/2008 | US7350564 Mono-diameter wellbore casing |
| 04/01/2008 | US7350563 System for lining a wellbore casing |
| 04/01/2008 | CA2437730C Method of diminishing the size of the cross section of an opening of a hollow device located in a flow pipe |
| 04/01/2008 | CA2308944C Well reference apparatus and method |
| 04/01/2008 | CA2167423C Shifting tool |
| 03/27/2008 | WO2008036572A1 Gas activated actuator device for downhole tools |
| 03/27/2008 | US20080073073 Whipstock with curved ramp |
| 03/27/2008 | CA2669739A1 Gas activated actuator device for downhole tools |
| 03/27/2008 | CA2669732A1 Dissolvable downhole trigger device |
| 03/26/2008 | EP1903178A2 Three dimensional steerable system |
| 03/26/2008 | EP1902195A1 Downhole force generator |
| 03/26/2008 | EP1756393B1 Valve seat |
| 03/26/2008 | EP1203177B1 Expandable joint connector |
| 03/26/2008 | CN201041009Y Downhole tool releasing device |
| 03/26/2008 | CN101148973A Sleeving instrument anti-locking device |
| 03/25/2008 | US7347273 Bottom hold completion system for an intermittent plunger |
| 03/25/2008 | CA2504300C Isolation assembly for coiled tubing |
| 03/25/2008 | CA2492402C Indexing apparatus |
| 03/25/2008 | CA2385426C Method and device for moving a tube in a borehole in the ground |
| 03/25/2008 | CA2248238C Method and measuring system comprising a semi-rigid extension |
| 03/20/2008 | WO2008033714A2 Forming a metal-to-metal seal in a well |
| 03/20/2008 | WO2008032112A1 Well construction and completion |
| 03/20/2008 | WO2008005495A8 Step ratchet mechanism |
| 03/20/2008 | US20080066963 Hydraulically driven tractor |
| 03/20/2008 | US20080066931 Gas activated actuator device for downhole tools |
| 03/20/2008 | US20080066930 Protective Sleeve For Expandable Tubulars |
| 03/20/2008 | US20080066929 Protective Sleeve For Expandable Tubulars |
| 03/20/2008 | CA2663495A1 Coiled tubing wellbore drilling and surveying using a through the drill bit apparatus |
| 03/19/2008 | EP0927295B1 Wellbore milling system |
| 03/18/2008 | US7343988 Drilling apparatus |
| 03/18/2008 | US7343982 Tractor with improved valve system |
| 03/18/2008 | US7343977 Translating downhole tool |
| 03/18/2008 | US7343932 Multiple line administration |
| 03/13/2008 | WO2008031040A2 Systems and methods to retard rod string backspin |
| 03/13/2008 | US20080061510 Forming a metal-to-metal seal in a well |
| 03/13/2008 | US20080060819 Systems and methods to retard rod string backspin |
| 03/13/2008 | US20080060817 Production tubing hydraulic release mechanism |
| 03/13/2008 | US20080060800 Method and system for accessing subterranean deposits from the surface |
| 03/13/2008 | CA2662055A1 Systems and methods to retard rod string backspin |
| 03/12/2008 | CN201034027Y Off-load grappling tool |
| 03/11/2008 | US7341110 Slotted slip element for expandable packer |
| 03/11/2008 | CA2436054C Selective direct and reverse circulation check valve mechanism for coiled tubing |
| 03/11/2008 | CA2421707C Constant force actuator |
| 03/06/2008 | US20080053663 Downhole tool with turbine-powered motor |
| 03/05/2008 | CN201031654Y Upper hanging universal adaptor |
| 03/05/2008 | CN201031653Y Lower hanging universal adaptor |
| 03/05/2008 | CN201031643Y Down-hole salvaging release tools |