| 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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| 02/19/2009 | WO2009023609A2 Downhole wet-mate connector debris exclusion system |
| 02/19/2009 | WO2009006631A3 Method and apparatus for catching a pump-down plug or ball |
| 02/19/2009 | US20090044983 Portable Concrete Boring Machine |
| 02/19/2009 | US20090044957 Fracturing plug convertible to a bridge plug |
| 02/19/2009 | US20090044956 Tubing hanger and method of compensating pressure differential between a tubing hanger and an external well volume |
| 02/19/2009 | US20090044944 Multi-Position Valve for Fracturing and Sand Control and Associated Completion Methods |
| 02/18/2009 | CN201196048Y Draining anchorage device |
| 02/12/2009 | WO2009020951A2 Tangentially-loaded high-load retrievable slip system |
| 02/12/2009 | WO2009020827A2 Method for altering the stress state of a formation and/or a tubular |
| 02/12/2009 | WO2009020826A1 Shape memory alloy closure spring for subsurface safety valves triggered by well fluids |
| 02/12/2009 | WO2009020397A1 Coupling device for converting mechanical torque into hydraulic pressure for exerting radial thrusting force on drive wheels in a pulling tool in a well |
| 02/12/2009 | WO2009020395A2 Actuator device |
| 02/12/2009 | WO2009019483A2 Downhole tool with slip elements having a friction surface |
| 02/12/2009 | US20090038854 System and method for drilling wellbores |
| 02/12/2009 | US20090038808 Tangentially-loaded high-load retrievable slip system |
| 02/12/2009 | US20090038804 Subsurface Safety Valve for Electric Subsea Tree |
| 02/12/2009 | US20090038796 Expandable leak path preventer in fluid activated downhole tools |
| 02/12/2009 | CA2694822A1 Method for altering the stress state of a formation and/or a tubular |
| 02/11/2009 | CN201193492Y Package break-out machine |
| 02/11/2009 | CN201193491Y Integration no killing well releasing tool |
| 02/11/2009 | CN201193490Y Novel environment protection type tubing anchor |
| 02/10/2009 | US7487846 Electrically operated drilling method |
| 02/10/2009 | US7487832 Force transfer apparatus to assist release of loaded member |
| 02/10/2009 | US7487830 Method and apparatus to facilitate wet or dry control line connection for the downhole environment |
| 02/10/2009 | CA2451873C Apparatus and method for orientating a downhole control tool |
| 02/05/2009 | WO2008131772A3 Drilling system with a barrel drilling head driven by a downhole tractor |
| 02/05/2009 | WO2008047218A4 Activating device for a downhole tool |
| 02/05/2009 | US20090032277 Hydraulic drilling machine for working in a small space |
| 02/05/2009 | US20090032267 Flow control for increased permeability planes in unconsolidated formations |
| 02/05/2009 | US20090032243 Polymer Shock Absorber for Use with Well Head Lubricator Assembly |
| 02/04/2009 | EP2020482A2 Liner Hanger, Running Tool and Method |
| 02/04/2009 | CN201190562Y Oil well sleeve pipe localizer |
| 02/04/2009 | CN201190561Y Gas well localizer |
| 02/04/2009 | CN201190546Y Backing type suspension unit special for release |
| 02/04/2009 | CN101358512A Rotary tail pipe hanger capable of respectively drilling and completing |
| 02/03/2009 | US7484559 Method for drilling and casing a wellbore with a pump down cement float |
| 01/29/2009 | WO2009014932A2 Apparatus and methods to perform operations in a wellbore using downhole tools having movable sections |
| 01/29/2009 | US20090025943 Lockable anchor for insertable progressing cavity pump |
| 01/29/2009 | US20090025941 Apparatus and Methods to Perform Operations in a Wellbore Using Downhole Tools Having Movable Sections |
| 01/29/2009 | US20090025940 latch assembly for wellbore operations |
| 01/29/2009 | US20090025927 Wellbore cleaning method & apparatus |
| 01/28/2009 | CN201187268Y Fetching machine special for oil pumping polished rod packing |
| 01/28/2009 | CN201187267Y Throwing and dragging tools of blanking plug of eccentric water distributor |
| 01/27/2009 | US7481461 Device which is expandable to engage the interior of a tube |
| 01/27/2009 | CA2548458C Hydraulically releaseable inflation tool for permanent bridge plug |
| 01/27/2009 | CA2500163C Cementing through a side pocket mandrel |
| 01/25/2009 | CA2638252A1 Down hole tool with adjustable fluid viscosity |
| 01/22/2009 | WO2008137447A3 A method and apparatus for subterranean fracturing |
| 01/22/2009 | WO2008128542A3 Anchor tool |
| 01/22/2009 | US20090020295 Deep water hurricane valve |
| 01/22/2009 | US20090020293 Downhole linear actuation apparatus and method |
| 01/21/2009 | CN201184190Y Bridle double-safety anti-drop apparatus |
| 01/21/2009 | CN201184168Y Guide strengthening double-ball fixing valve assembly |
| 01/21/2009 | CN201184152Y Machine for salvaging and throwing bats |
| 01/21/2009 | CN201184151Y Combined type tail tube hanger |
| 01/20/2009 | US7478678 Time release downhole trigger |
| 01/20/2009 | CA2473496C Bi-directional thruster pig apparatus and method of utilizing same |
| 01/20/2009 | CA2462983C Methods and apparatus to control downhole tools |
| 01/15/2009 | WO2009009650A2 Apparatus and methods for drilling and lining a wellbore |
| 01/15/2009 | WO2008121653A3 Packer setting device for high-hydrostatic applications |
| 01/15/2009 | US20090014173 Well bore anchors |
| 01/14/2009 | EP2014868A1 Method and apparatus to complete a well having tubing inserted through a valve |
| 01/13/2009 | US7475735 Tubular hanger and method of lining a drilled bore |
| 01/13/2009 | US7475723 Apparatus and methods for creation of down hole annular barrier |
| 01/13/2009 | CA2540434C Well communication system |
| 01/08/2009 | WO2009006631A2 Method and apparatus for catching a pump-down plug or ball |
| 01/08/2009 | US20090008152 Roller link toggle gripper and downhole tractor |
| 01/08/2009 | US20090008083 Method and apparatus for wellbore fluid treatment |
| 01/08/2009 | US20090008081 Running Wellbore Tubulars |
| 01/07/2009 | CN101338658A Hermetic electric submersible pump production completion system capable of proceeding steel wire operation |
| 01/07/2009 | CN101338653A Well wall gripping element |
| 01/06/2009 | US7472749 Drifting tubing |
| 01/01/2009 | US20090000794 Tubing expansion |
| 12/31/2008 | EP2007967A2 A system and method for estimating supercharge pressure and initial pressure of a formation |
| 12/31/2008 | CN201173099Y Oil pumping machine unloading and calibration device |
| 12/31/2008 | CN201173098Y Cable penetrating metal seal mandrel hanger positioning apparatus |
| 12/25/2008 | US20080314600 Well Treatment Device, Method and System |
| 12/25/2008 | US20080314599 Tubing Pressure Balanced Operating System with Low Operating Pressure |
| 12/25/2008 | US20080314579 Method and System for Inserting a Fiber Optical Sensing Cable Into an Underwater Well |
| 12/24/2008 | WO2008157428A2 Electrically powered tractor |
| 12/24/2008 | WO2008155526A2 Improved activation device |
| 12/24/2008 | WO2008052058A3 Apparatus for radially expanding and plastically deforming a tubular member |
| 12/24/2008 | EP2004951A2 Well servicing methods and systems |
| 12/24/2008 | CN201170071Y Pipe pillar support machine |
| 12/24/2008 | CN201170070Y Oil manifold hanger |
| 12/24/2008 | CN201170069Y Seal glue core loading and unloading tools of sea drill platform current divider |
| 12/24/2008 | CN201170068Y Midway motion-proof apparatus of downhole hydraulic tool |
| 12/24/2008 | CN101328791A Method and system for accessing subterranean deposits from the surface |
| 12/24/2008 | CA2692230A1 Improved activation device |
| 12/24/2008 | CA2688348A1 Electrically powered tractor |
| 12/23/2008 | US7467665 Autonomous circulation, fill-up, and equalization valve |
| 12/23/2008 | CA2525065C Wellbores utilizing fiber optic-based sensors and operating devices |
| 12/18/2008 | WO2008154204A1 String mounted hydraulic pressure generating device for downhole tool actuation |
| 12/18/2008 | WO2008079882A3 Integrated flow control device and isolation element |
| 12/18/2008 | WO2008047218A3 Activating device for a downhole tool |
| 12/18/2008 | US20080308282 Hydraulic coiled tubing retrievable bridge plug |
| 12/18/2008 | US20080308279 Apparatus and Method for Unsticking a Downhole Tool |
| 12/18/2008 | US20080308274 Lower Completion Module |
| 12/18/2008 | US20080308267 Apparatus and methods for radially expanding a tubular member |
| 12/17/2008 | EP1485567B1 Mono-diameter wellbore casing |