| 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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| 12/20/2001 | US20010052427 Three dimensional steerable system |
| 12/19/2001 | EP1163423A1 Core barrel |
| 12/18/2001 | US6330912 Pack-off bushing |
| 12/13/2001 | WO2001094745A1 Downhole window finder and method of using the same |
| 12/13/2001 | WO2001094739A1 Method for drilling and casing a wellbore with a pump down cement float |
| 12/13/2001 | WO2001094738A1 A method for drilling with casing |
| 12/13/2001 | CA2661956A1 A method for drilling with casing |
| 12/13/2001 | CA2411856A1 A method for drilling with casing |
| 12/12/2001 | EP1161615A1 Fluid controlled adjustable down-hole tool |
| 12/12/2001 | EP0890013B1 Monobore riser bore selector |
| 12/11/2001 | US6328119 Adjustable gauge downhole drilling assembly |
| 12/11/2001 | US6328111 Live well deployment of electrical submersible pump |
| 12/11/2001 | US6328109 Downhole valve |
| 12/09/2001 | CA2311158A1 A method for drilling with casing |
| 12/06/2001 | WO2001092675A2 Method and system for performing operations and for improving production in wells |
| 12/05/2001 | EP1159510A2 Wellbore primary barrier and related systems |
| 12/05/2001 | EP1159507A1 Method of making a conductive downhole wire line system |
| 12/05/2001 | CN1325478A Wellbore system including a conduit an an expandable device |
| 12/04/2001 | US6325148 Tools and methods for use with expandable tubulars |
| 12/04/2001 | CA2238910C Anti-rotation tool |
| 11/30/2001 | CA2335192A1 Improvements in downhole tools |
| 11/29/2001 | WO2001090530A1 Braking device for tool strings |
| 11/29/2001 | WO2001073423A8 Apparatus and method for downhole well equipment and process management, identification, and actuation |
| 11/29/2001 | US20010045290 Method and apparatus for selective injection or flow control with through-tubing operation capacity |
| 11/29/2001 | US20010045288 Drop ball sub and system of use |
| 11/29/2001 | US20010045284 Apparatus and methods for expanding tubulars in a wellbore |
| 11/29/2001 | CA2409855A1 Braking device for tool strings |
| 11/27/2001 | US6321848 Method of and apparatus for inserting tubing into a live well bore |
| 11/27/2001 | US6321847 Downhole pressure activated device and a method |
| 11/27/2001 | US6321842 Flow control in a wellbore |
| 11/27/2001 | CA2031602C System for operating an non-rigid exploration device in a deflected well |
| 11/22/2001 | WO2001088336A1 Well reference apparatus and method |
| 11/22/2001 | WO2001088328A1 Valve assembly |
| 11/22/2001 | WO2001088327A1 Bypass valve |
| 11/22/2001 | US20010043838 Skate apparatus for injecting tubing down pipelines |
| 11/22/2001 | US20010043509 Method and apparatus for improved communication in a wellbore utilizing acoustic signals |
| 11/22/2001 | US20010042626 Valve assembly |
| 11/22/2001 | US20010042625 Apparatus for facilitating the connection of tubulars using a top drive |
| 11/22/2001 | US20010042621 Method and apparatus for multilateral well entry |
| 11/20/2001 | US6318472 Hydraulic set liner hanger setting mechanism and method |
| 11/20/2001 | US6318471 Method for installing tubular members axially into the earth |
| 11/20/2001 | US6318470 Recirculatable ball-drop release device for lateral oilwell drilling applications |
| 11/20/2001 | US6318462 Downhole anti-rotation tool |
| 11/20/2001 | US6318459 Device for anchoring an oil well tubing string within an oil well casing |
| 11/15/2001 | WO2001086117A1 Method and device for measuring physical parameters in a production shaft of a deposit of underground fluid storage reservoir |
| 11/14/2001 | CN2459436Y Reinforcing device for packing large diameter through sleeve |
| 11/13/2001 | US6315498 Thruster pig apparatus for injecting tubing down pipelines |
| 11/13/2001 | US6315075 Borehole logging tool with anchoring mechanism |
| 11/13/2001 | US6315049 Multiple line hydraulic system flush valve and method of use |
| 11/13/2001 | US6315043 Downhole anchoring tools conveyed by non-rigid carriers |
| 11/08/2001 | WO2001084040A1 A sleeve plug device |
| 11/08/2001 | WO2001083937A1 Borehole retention assembly |
| 11/08/2001 | WO1999066171A3 Method and system for moving equipment into and through an oil and/or gas production well |
| 11/08/2001 | US20010037884 Hydraulic control system for downhole tools |
| 11/08/2001 | EP1144801A3 Method and system for moving equipment into and through an oil and/or gas production well |
| 11/07/2001 | EP1152119A2 An apparatus for running tubulars into a borehole |
| 11/07/2001 | EP1151516A1 A distributed monitoring and protection system for a distributed power network |
| 11/07/2001 | EP1151180A1 Tubing anchor |
| 11/07/2001 | EP1151177A1 Downhole tractor |
| 11/06/2001 | US6311778 Assembly and subterranean well tool and method of use |
| 11/06/2001 | US6311777 Well logging tool |
| 11/06/2001 | US6311776 Dual diverter and orientation device for multilateral completions and method |
| 11/01/2001 | WO2001081714A1 Method and apparatus for forming lateral drains in wellbores |
| 11/01/2001 | WO2001080650A2 Packer, setting tool for a packer and method for setting a packer |
| 11/01/2001 | CA2407436A1 Packer, setting tool for a packer and method for setting a packer |
| 10/31/2001 | EP1149980A2 Downhole hydraulic power unit |
| 10/31/2001 | EP0861363A4 Side pocket mandrel |
| 10/31/2001 | CN2457326Y Suspending device for immersible pump |
| 10/30/2001 | US6310829 Method and apparatus for improved communication in a wellbore utilizing acoustic signals |
| 10/30/2001 | US6308783 Wellbore flow control device |
| 10/30/2001 | US6308782 Method and apparatus for one-trip insertion and retrieval of a tool and auxiliary device |
| 10/30/2001 | CA2059910C Adjustable drilling mechanism |
| 10/28/2001 | CA2315607A1 Multi-use tubing disconnect |
| 10/25/2001 | CA2344751A1 Downhole hydraulic power unit |
| 10/24/2001 | EP1147287A2 Procedures and equipment for profiling and jointing of pipes |
| 10/23/2001 | US6305475 Method for simultaneously installing multiple strings within a wellbore and related tools |
| 10/23/2001 | US6305474 Scoop for use with an anchor system for supporting a whipstock |
| 10/23/2001 | US6305469 Method of creating a wellbore |
| 10/23/2001 | US6305467 Wireless coiled tubing joint locator |
| 10/23/2001 | CA2212978C Early evaluation formation testing system |
| 10/18/2001 | WO2001077480A2 Apparatus to actuate downhole tool |
| 10/18/2001 | WO2001038689A8 Device for manipulating a tool in a well tubular |
| 10/18/2001 | US20010030076 Receiver array using tubing conveyed packer elements |
| 10/18/2001 | US20010030049 Well isolation system |
| 10/18/2001 | US20010030048 Bottom hole assembly with coiled tubing insert |
| 10/17/2001 | EP1144802A2 Profile formation |
| 10/17/2001 | EP1144801A2 Method and system for moving equipment into and through an oil and/or gas production well |
| 10/16/2001 | US6302215 Positioning and conveying well apparatus and method |
| 10/16/2001 | US6302211 Apparatus and method for remotely installing shoulder in subsea wellhead |
| 10/16/2001 | US6302204 Method of obtaining improved geophysical information about earth formations |
| 10/16/2001 | US6302200 Measurement port coupler for use in a borehole monitoring system |
| 10/11/2001 | US20010027866 Deviated borehole drilling assembly |
| 10/10/2001 | EP1141517A1 Drilling method |
| 10/10/2001 | EP1141515A1 Method and apparatus for expanding a liner patch |
| 10/10/2001 | CN2453124Y Self-anchoring type compressing sealing means |
| 10/10/2001 | CN2453121Y Percussion type back-off sub |
| 10/10/2001 | CN2453120Y Means for collision and adjusting pump in oil well |
| 10/10/2001 | CN2453119Y Oil well tail pipe holding means of mechanical slips locus type |
| 10/09/2001 | US6298920 Method and apparatus for removing a rigid liner from within a cylindrical cavity |
| 10/09/2001 | US6298919 Downhole hydraulic path selection |