| 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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| 09/22/2005 | US20050205248 Use of electromagnetic acoustic transducers in downhole cement evaluation |
| 09/22/2005 | CA2537242A1 Expandable tubular |
| 09/21/2005 | EP1108114B1 Method and apparatus for anchoring a tool within a cased borehole |
| 09/21/2005 | CN2727393Y Ratchet mechanism for ejecting and retracting regulating arm of downhole measuring and regulating apparatus |
| 09/21/2005 | CN2727383Y Tensile tubing hanger |
| 09/21/2005 | CN1670331A Single arm clamp piston of petroleum exploration device |
| 09/21/2005 | CN1219962C Method and device for measuring physical parameter in production shaft of deposit of underground fluid storage reservoir |
| 09/20/2005 | US6945330 Slickline power control interface |
| 09/20/2005 | CA2289374C Unlocking packer setting method and device |
| 09/15/2005 | WO2005085584A1 Downhole core orientation tool |
| 09/15/2005 | WO2004023014B1 Threaded connection for expandable tubulars |
| 09/15/2005 | US20050199423 High frequency pressure compensator |
| 09/15/2005 | CA2559085A1 Downhole core orientation tool |
| 09/14/2005 | CN2725511Y Pressurized operation sealed hydraulic pressurization power head |
| 09/14/2005 | CN2725507Y Mechanical tail pipe suspension apparatus |
| 09/14/2005 | CN1667237A Tubing anchor |
| 09/13/2005 | US6943697 Reservoir management system and method |
| 09/13/2005 | US6943340 Method and apparatus of providing an optical fiber along a power supply line |
| 09/13/2005 | US6942044 Three-dimensional steering tool for controlled downhole extended-reach directional drilling |
| 09/13/2005 | US6942039 Flapper valve and associated method for single trip retrieval of packer tools |
| 09/13/2005 | CA2374986C Tubular cutting tool |
| 09/13/2005 | CA2199825C Apparatus for milling a well casing |
| 09/08/2005 | US20050194188 Method of drilling and completing multiple wellbores inside a single caisson |
| 09/08/2005 | US20050194151 Expandable anchor |
| 09/08/2005 | US20050194143 One trip perforating, cementing, and sand management apparatus and method |
| 09/07/2005 | EP1570150A1 One-step directional coring or drilling system |
| 09/07/2005 | CN1664309A System for performing operations and for improving production in wells |
| 09/07/2005 | CN1664303A Midway action proof apparatus for down-hole hydraulic tool |
| 09/07/2005 | CN1218112C Method of creating well bore |
| 09/06/2005 | US6938708 Electrically sequenced tractor |
| 09/06/2005 | US6938694 Method and apparatus for manufacturing an expandable slotted tube |
| 09/06/2005 | CA2196382C Mechanical set anchor with slips pocket |
| 09/01/2005 | US20050189121 Expandable packer with mounted exterior slips and seal |
| 09/01/2005 | US20050189120 Slotted slip element for expandable packer |
| 09/01/2005 | US20050189118 Swing arm crane and method |
| 09/01/2005 | US20050189117 Method & Apparatus for Selective Injection or Flow Control with Through-Tubing Operation Capacity |
| 09/01/2005 | US20050189115 Subsea Intervention |
| 09/01/2005 | US20050189106 Flow control apparatus for use in a wellbore |
| 09/01/2005 | US20050189105 Earth boring system |
| 08/31/2005 | EP1568847A2 Method and apparatus for handling tubular goods |
| 08/31/2005 | EP1436482A4 High power umbilicals for subterranean electric drilling machines and remotely operated vehicles |
| 08/31/2005 | CN2721872Y Anchored cracking sandproof tool |
| 08/31/2005 | CN2721860Y Non-stopped butt-joint device for load shift sensor |
| 08/31/2005 | CN2721859Y Bias wheel callipers of polish rod |
| 08/31/2005 | CN2721858Y Eccentric oil pipe anchor for preventing rotation |
| 08/31/2005 | CN2721857Y Hanging device for well completion |
| 08/30/2005 | US6935431 Well reference apparatus and method |
| 08/30/2005 | US6935428 Apparatus and methods for anchoring and orienting equipment in well casing |
| 08/30/2005 | US6935423 Borehole retention device |
| 08/24/2005 | CN2720099Y Self-hanging mending tool for oil-water well casing pipe |
| 08/24/2005 | CN2720095Y Safety stripper joint |
| 08/18/2005 | US20050178562 Method and apparatus for isolating and testing zones during reverse circulation drilling |
| 08/18/2005 | US20050178561 Ribbed sealing element and method of use |
| 08/18/2005 | DE102005004606A1 Einstellbares, im Bohrloch anzuordnendes Werkzeug Adjustable, to be arranged in the downhole tool |
| 08/17/2005 | CN2718209Y Oil pipe rubber anchoring device |
| 08/17/2005 | CN2718208Y Packer anchoring multifuntion deflecting windowing device |
| 08/17/2005 | CN2718199Y Tubing anchor |
| 08/16/2005 | US6929063 Cutting locator tool |
| 08/16/2005 | CA2270162C Deformed multiple well template and process of use |
| 08/16/2005 | CA2233853C Method and apparatus for locating indexing systems in a cased well and conducting multilateral branch operations |
| 08/11/2005 | US20050173157 Flow control valve |
| 08/11/2005 | US20050173115 Apparatus and method for repair of underground conduits |
| 08/11/2005 | US20050173110 Wellbore seal device |
| 08/11/2005 | US20050173108 Method of forming a mono diameter wellbore casing |
| 08/11/2005 | CA2496649A1 Method and apparatus for isolating and testing zones during reverse circulation drilling |
| 08/10/2005 | CN2716491Y Rail type vibration damping connecting-tripping device |
| 08/09/2005 | US6926089 Downhole actuation system utilizing electroactive fluids |
| 08/09/2005 | US6926088 Sequential release packer J tools for single trip insertion and extraction |
| 08/09/2005 | US6926087 Electro-mechanical wireline anchoring system and method |
| 08/04/2005 | WO2005071212A1 Expandable connection |
| 08/04/2005 | US20050167160 Method and apparatus for horizontal drilling and oil recovery |
| 08/04/2005 | US20050167158 One-step directional coring or drilling system |
| 08/04/2005 | US20050167121 Telemetering system |
| 08/03/2005 | EP1559866A1 Methods of completing a subterranean well and associated apparatus |
| 08/02/2005 | US6923291 Apparatus for detecting geophysical energy |
| 08/02/2005 | US6923273 Well system |
| 08/02/2005 | US6923261 Apparatus and method for expanding a tubular |
| 08/02/2005 | US6923256 Disconnect device |
| 08/02/2005 | CA2447254C Well cavity positioning method |
| 08/02/2005 | CA2320195C Sidepocket mandrel for orienting a gas lift valve |
| 08/02/2005 | CA2227941C Method and apparatus for retrieving downhole tools |
| 07/28/2005 | WO2005068775A1 Electrically operated actuation tool for subsea completion system components |
| 07/28/2005 | WO2005068773A1 Improved traction control for downhole tractor |
| 07/28/2005 | WO2005068770A1 Split locking ring for wellhead components |
| 07/28/2005 | US20050161231 Telemetry system for the bi-directional communication of data between a well point and a terminal unit situated on the surface |
| 07/28/2005 | US20050161229 Expandable packer with anchoring feature |
| 07/28/2005 | US20050161212 System and Method for Utilizing Nano-Scale Filler in Downhole Applications |
| 07/27/2005 | CN2713124Y Power feed device of blowout preventer |
| 07/27/2005 | CN2713118Y Self-locking tubing anchor |
| 07/27/2005 | CN1646786A Mono-diameter wellbore casing |
| 07/26/2005 | US6920936 Constant force actuator |
| 07/26/2005 | US6920935 Expandable downhole tubing |
| 07/26/2005 | US6920934 Method and apparatus for expandable liner hanger with bypass |
| 07/26/2005 | US6920933 Platform for delivery of downhole tools |
| 07/26/2005 | US6920930 Drop ball catcher apparatus |
| 07/26/2005 | US6920927 Method and apparatus for anchoring downhole tools in a wellbore |
| 07/26/2005 | US6920924 Wellbore apparatus |
| 07/26/2005 | CA2222386C A hole-finding apparatus having integrated sensors |
| 07/21/2005 | WO2005045184A9 Control system communication and lock open tool and method for locking open a safety valve and communicating with surface |
| 07/21/2005 | US20050155771 Apparatus and methods for expanding tubulars in a wellbore |