| 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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| 12/28/2004 | US6834722 Cyclic check valve for coiled tubing |
| 12/28/2004 | US6834719 Drillpipe sub |
| 12/28/2004 | CA2234689C Mill for wellbore milling operations |
| 12/23/2004 | WO2004111380A2 Wellhead assembly with pressure actuated seal assembly and running tool |
| 12/23/2004 | US20040256871 Hydraulic overshot tool without a nozzle, and method of retrieving a cylinder |
| 12/23/2004 | US20040256113 Methods and apparatus for actuating a downhole tool |
| 12/23/2004 | US20040256100 Method and apparatus of providing an optical fiber along a power supply line |
| 12/22/2004 | EP1489259A2 Method and apparatus for releasably connecting a wireline to a downhole tool |
| 12/22/2004 | CN2665348Y Well pumping unit pressure type disc root adding specific appliance |
| 12/22/2004 | CN2665347Y Hydraulic tubing anchor |
| 12/21/2004 | US6832654 Bottom hole assembly |
| 12/18/2004 | CA2694851A1 Methods and apparatus for actuating a downhole tool |
| 12/16/2004 | WO2003093623B1 Mono diameter wellbore casing |
| 12/16/2004 | US20040251031 Wellhead assembly with pressure actuated seal assembly and running tool |
| 12/15/2004 | EP1485567A2 Mono-diameter wellbore casing |
| 12/15/2004 | EP1274992A4 Apparatus and method for downhole well equipment and process management, identification, and actuation |
| 12/15/2004 | EP1127212B1 Hydraulic switch device |
| 12/14/2004 | US6830107 Fluid flow switching device |
| 12/14/2004 | CA2326268C Apparatus for axially displacing a downhole tool or a tubing string in a well bore |
| 12/14/2004 | CA2296195C Locking telescoping joint for use in a conduit connected to a wellhead |
| 12/14/2004 | CA2108916C Adjustable stabilizer |
| 12/12/2004 | CA2470960A1 Cement float |
| 12/09/2004 | US20040245018 Electrically sequenced tractor |
| 12/09/2004 | US20040244982 Substantially neutrally buoyant and positively buoyant electrically heated flowlines for production of subsea hydrocarbons |
| 12/08/2004 | EP1141517B1 Drilling method |
| 12/08/2004 | CN2661902Y Down-hole string anchoring device |
| 12/07/2004 | US6828547 Wellbores utilizing fiber optic-based sensors and operating devices |
| 12/07/2004 | US6827149 Method and apparatus for conveying a tool in a borehole |
| 12/07/2004 | US6827148 Downhole tool for use in a wellbore |
| 12/02/2004 | WO2004104370A1 Hydraulic setting tool for liner hanger |
| 12/02/2004 | WO2004104369A1 Slip energized by longitudinal shrinkage |
| 12/02/2004 | WO2004072433A3 Downhole tractor with improved valve system |
| 12/02/2004 | US20040238185 Selective running tool with separation feature |
| 12/02/2004 | US20040238183 Wellbore apparatus |
| 12/01/2004 | EP1482123A2 Apparatus and methods for locating tools in subterranean wells |
| 12/01/2004 | CN2660098Y Integrated slip type tubing anchor |
| 12/01/2004 | CN2660092Y Anti-jacking slip |
| 12/01/2004 | CN2660091Y High reliability two-way hydraulic tubing anchor |
| 11/30/2004 | US6823938 Locator and holddown tool for casing hanger running tool |
| 11/30/2004 | CA2293095C Pack-off bushing |
| 11/25/2004 | WO2004027198A3 Remote intervention logic valving method and apparatus |
| 11/25/2004 | WO2004011776B1 Method of forming a mono diameter wellbore casing |
| 11/25/2004 | US20040231860 Open hole anchor |
| 11/25/2004 | US20040231859 Method, system & apparatus for orienting casing and liners |
| 11/25/2004 | US20040231838 Slip energized by longitudinal shrinkage |
| 11/24/2004 | EP1478824A2 Well system |
| 11/24/2004 | EP0852652B1 Method for isolating multi-lateral well completions while maintaining selective drainhole re-entry access |
| 11/24/2004 | CN2658374Y Mounting device of oil-gas well blowout preventer |
| 11/23/2004 | US6820698 Method of selectively locking a telescoping joint |
| 11/23/2004 | US6820697 Downhole bypass valve |
| 11/18/2004 | WO2004099562A1 Expandable tieback |
| 11/18/2004 | WO2004099561A1 Expansion device for expanding a pipe |
| 11/18/2004 | WO2004099549A2 Self-set bridge plug |
| 11/18/2004 | WO2004074621A3 System and method for maintaining zonal isolation in a wellbore |
| 11/18/2004 | US20040226749 Latching system for maintaining position of component within a downhole drill string section |
| 11/18/2004 | US20040226723 Procedures and equipment for profiling and jointing of pipes |
| 11/18/2004 | US20040226720 Hydraulic control and actuation system for downhole tools |
| 11/18/2004 | CA2524330A1 Self-set bridge plug |
| 11/16/2004 | US6817410 Intelligent well system and method |
| 11/16/2004 | US6817257 Apparatus for the remote measurement of physical parameters |
| 11/16/2004 | CA2181562C Milling tool |
| 11/11/2004 | WO2004097165A1 Flushing device |
| 11/09/2004 | US6814143 Downhole tubular patch, tubular expander and method |
| 11/09/2004 | CA2272680C Expandable wellbore junction |
| 11/09/2004 | CA2235995C Method for multi-lateral completion and cementing the juncture with lateral wellbores |
| 11/09/2004 | CA2229091C Methods of completing a subterranean well and associated apparatus |
| 11/09/2004 | CA2071151C Fluid actuated wellbore tool system |
| 11/04/2004 | WO2004094783A1 Well string assembly |
| 11/04/2004 | WO2004094779A1 Downhole tool |
| 11/04/2004 | WO2004094775A2 Screen for blanking plug |
| 11/04/2004 | WO2004094766A2 Apparatus for radially expanding and plastically deforming a tubular member |
| 11/04/2004 | US20040216927 Inner core barrel head assembly for core tube within a drill string |
| 11/04/2004 | US20040216925 Method and apparatus for drilling and lining a wellbore |
| 11/04/2004 | US20040216893 Method and apparatus for anchoring downhole tools in a wellbore |
| 11/04/2004 | US20040216892 Drilling with casing latch |
| 11/04/2004 | US20040216889 Expandable tieback |
| 11/04/2004 | US20040216887 Device and a method for disconnecting a tool from a pipe string |
| 11/04/2004 | US20040216883 Fluid flow switching device |
| 11/04/2004 | US20040216878 Method and apparatus for drilling and lining a wellbore |
| 11/04/2004 | US20040216877 Hydraulic tools for setting liner top packers and for cementing liners |
| 11/04/2004 | US20040216869 Hydraulic jar lock |
| 11/04/2004 | US20040216868 Self-set bridge plug |
| 11/03/2004 | EP1473435A1 Automatically actuating locking mechanism for a downhole tool |
| 11/03/2004 | EP1472433A2 Non-seize material attachment for a drill slip system |
| 11/02/2004 | US6810955 Gas lift mandrel |
| 11/02/2004 | CA2664979A1 Method and apparatus for anchoring downhole tools in a wellbore |
| 11/02/2004 | CA2327671C Coil springs for cable support |
| 10/28/2004 | WO2004092633A2 Spoolable composite coiled tubing connector |
| 10/28/2004 | WO2004092537A1 Mandrel for a gas lift valve |
| 10/28/2004 | WO2004092535A1 Pump plug |
| 10/28/2004 | WO2004092528A2 Apparatus for radially expanding and plastically deforming a tubular member |
| 10/28/2004 | WO2004092527A2 Apparatus for radially expanding and plastically deforming a tubular member |
| 10/28/2004 | WO2003067016A3 Bi-directional thruster pig apparatus and method of utilizing same |
| 10/28/2004 | CA2523779A1 Apparatus for radially expanding and plastically deforming a tubular member |
| 10/28/2004 | CA2523654A1 Apparatus for radially expanding and plastically deforming a tubular member |
| 10/26/2004 | US6808023 Disconnect check valve mechanism for coiled tubing |
| 10/26/2004 | US6808022 Latch profile installation in existing casing |
| 10/26/2004 | US6808021 Subsea intervention system |
| 10/26/2004 | CA2329673C Equi-pressure geosteering |
| 10/21/2004 | WO2004089608A2 Apparatus for radially expanding and plastically deforming a tubular member |