Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 23 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
Patents for E21B 23 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells (12,712)
11/2003
11/04/2003US6640894 Gripper assembly for downhole tools
11/04/2003CA2307514C Piston actuator assembly for an orienting device
11/04/2003CA2285194C Window assembly for multiple wellbore completions
10/2003
10/30/2003WO2003089760A1 Telemetry system for the bi-directional communication of data between a well point and a terminal unit situated on the surface
10/30/2003WO2003089755A1 Circulating sub
10/30/2003US20030201102 Liner top test packer
10/29/2003EP1357403A2 A method of generating electric power in a wellbore
10/29/2003EP1357402A2 A light actuated system for use in a wellbore
10/29/2003EP1357401A2 A system for controlling a downhole device in a wellbore
10/29/2003EP0996806B1 Method and apparatus for moving a piston
10/23/2003WO2003087530A1 Releasing mechanism for downhole sealing tool
10/23/2003US20030196807 One trip through tubing window milling apparatus and method
10/22/2003EP1355170A2 A method of controlling production from a wellbore
10/22/2003EP1355169A2 Method and apparatus for controlling chemical injection of a surface treatment system
10/22/2003EP1355168A2 A method for avoiding injection induced unintentional fracture growth
10/22/2003EP1355167A2 An injection well with a fibre optic cable to measure fluorescence of bacteria present
10/22/2003EP1355166A2 An injection evaluation system
10/22/2003EP0842347B9 Device and process for the lining of a pipe branch, particularly in an oil well
10/21/2003US6634424 Downhole control tool
10/16/2003US20030192708 Providing a conduit for an instrumentation line
10/16/2003US20030192696 Full bore automatic gun release module
10/16/2003US20030192687 Downhole actuation system utilizing electroactive fluids
10/15/2003CN2580096Y Underwell hydraulic pulling releasing device
10/15/2003CN2580095Y Hydraulic collision pressure type well completion pipe string suspension packer
10/14/2003US6631768 Expandable shifting tool
10/14/2003US6631767 Method and apparatus for selective injection or flow control with through-tubing operation capacity
10/09/2003WO2003083333A2 Valve system and method
10/09/2003WO2003083250A1 One trip through tubing window milling apparatus and method
10/09/2003US20030188875 Gripper assembly for downhole tractors
10/09/2003US20030188869 Flapper valve for single trip retrieval of packer tools
10/09/2003US20030188868 Apparatus and methods for separating and joining tubulars in a wellbore
10/09/2003US20030188861 Anti-rotation tool
10/09/2003US20030188860 Releasing mechanism for downhole sealing tool
10/09/2003CA2614922A1 Lock for downhole fluid driven motor
10/08/2003EP1350917A2 Mechanism that assists tractoring on uniform and non-uniform surfaces
10/08/2003EP1350005A1 Hydraulic running tool
10/08/2003CN1447876A Subsea intervention system
10/07/2003US6629568 Bi-directional grip mechanism for a wide range of bore sizes
10/07/2003US6629565 Abandonment and retrieval apparatus and method
10/07/2003US6629563 Packer releasing system
10/02/2003WO2003080993A1 Method and application for open hole gravel packing
10/02/2003WO2003080992A1 Full bore selective location and orientation system
10/02/2003US20030183398 Valve system and method
10/02/2003US20030183396 Downhole gripping tool and method
10/02/2003US20030183391 Multiple zones frac tool
10/02/2003US20030183388 One trip through tubing window milling apparatus and method
10/02/2003US20030183383 Mechanism that assists tractoring on uniform and non-uniform surfaces
10/01/2003EP1144801B1 Method and system for moving equipment into and through an oil and/or gas production well
09/2003
09/30/2003US6626244 Deep-set subsurface safety valve assembly
09/25/2003WO2003078785A2 Collapsible expansion cone
09/25/2003US20030178205 Hydraulic power source for downhole instruments and actuators
09/25/2003US20030177932 Inflatable gas bag for use as a borehole plug
09/25/2003CA2478868A1 Collapsible expansion cone
09/24/2003EP1346128A1 Adjustable stabiliser for directional drilling
09/24/2003CN1443922A Downhole rod pipe fixing device
09/24/2003CN1443921A Constant force actuator
09/23/2003US6622803 Stabilizer for use in a drill string
09/23/2003US6622789 Downhole tubular patch, tubular expander and method
09/18/2003WO2003036018A3 Downhole actuator and tool
09/18/2003US20030173090 Lubrication and self-cleaning system for expansion mandrel
09/18/2003US20030173089 Full bore selective location and orientation system and method of locating and orientating a downhole tool
09/18/2003US20030173076 Constant force actuator
09/18/2003US20030173074 Packing device for oil wells
09/18/2003US20030172752 Apparatus for the remote measurement of physical parameters
09/17/2003EP1344893A2 Constant force actuator
09/17/2003CN2573659Y Low-pressure testing hydraulic unloading device for pumping unit
09/17/2003CN2573658Y Injection well testing plugging device pressure feeding unit
09/16/2003US6619400 Apparatus and method to complete a multilateral junction
09/16/2003US6619398 Cement diverter system for multilateral junctions and method for cementing a junction
09/16/2003US6619391 Combined sealing and gripping unit for retrievable packers
09/16/2003US6619387 Inflatable gas bag for use as a borehole plug
09/16/2003CA2322844C Clamped receiver array using coiled tubing conveyed packer elements
09/16/2003CA2220385C Placing and cementing casing in horizontal wells
09/12/2003WO2003074837A1 Expandable well tubing
09/10/2003EP1341988A1 Bi-directional traction apparatus
09/10/2003EP0839255B1 Safeguarded method and apparatus for fluid communication using coiled tubing, with application to drill stem testing
09/04/2003US20030164037 Pressure sensor assembly for wellbore
09/03/2003EP1339950A1 Full bore automatic gun release module
09/03/2003EP1339941A1 Improvements to disconnect devices
09/02/2003CA2055223C Method and device for operations in high temperature wellbore
08/2003
08/28/2003WO2003071086A2 Mono-diameter wellbore casing
08/28/2003US20030159829 Downhole tool actuator
08/28/2003US20030159826 Method and system for avoiding damage to behind-casing structures
08/28/2003US20030159823 Method and device for the measuring physical parameters in a production shaft of a deposit of underground fluid storage reservoir
08/27/2003EP1068425B1 Drillstring with stabilisers for re-entering a primary wellbore
08/27/2003CN1119502C Method and system for measuring data in fluid transportation conduit
08/21/2003US20030155159 Method and apparatus for handling tubular goods
08/21/2003US20030155131 Deep set safety valve
08/19/2003US6607044 Three dimensional steerable system and method for steering bit to drill borehole
08/14/2003WO2003067027A1 Liner top test packer
08/14/2003WO2003067018A2 Well system
08/14/2003WO2003067016A2 Bi-directional thruster pig apparatus and method of utilizing same
08/14/2003US20030150612 Downhole window finder and method of using the same
08/14/2003US20030150607 Torsional resistant slip mechanism and method
08/14/2003CA2755094A1 Well system
08/13/2003EP1333963A2 Apparatus and methods for separating and joining tubulars in a wellbore
08/13/2003EP1261801A4 Recirculatable ball-drop release device for lateral oilwell drilling applications
08/13/2003CN2565969Y Pipe string compensation packer top-proof device
08/13/2003CN2565967Y Multifunctional tubing anchor
08/12/2003US6604763 Expandable connector
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