| Patents for E21B 31 - Fishing for or freeing objects in boreholes or wells (3,788) |
|---|
| 09/06/2006 | EP1697613A2 Field adjustable impact jar |
| 09/06/2006 | EP1373676B1 An apparatus for retrieving metal debris from a well bore |
| 09/06/2006 | CN2813878Y Producing well pig |
| 09/06/2006 | CN1273561C Method of releasing stuck pipe or tools and spotting fluids therefor |
| 09/05/2006 | US7100696 Disconnect for use in a wellbore |
| 08/31/2006 | US20060191720 Stabilized down hole drilling motor |
| 08/31/2006 | DE10241610B4 Adapter zum Verbinden einer einzuziehenden Rohrleitung mit einer Zugvorrichtung Adapter for connecting a pipe recovered with a traction device |
| 08/29/2006 | US7096962 Wellbore recovery operation |
| 08/29/2006 | US7096952 Latch mechanism guide |
| 08/29/2006 | US7096951 Method and apparatus for retrieving an object from a well bore |
| 08/22/2006 | US7093674 Drilling formation tester, apparatus and methods of testing and monitoring status of tester |
| 08/16/2006 | CN2806753Y Overshot with slot for wiper block of correction device of sucker rod of screw pump well |
| 08/16/2006 | CN2806752Y Hydraulic drilling jar with mechanical interlock mechanism |
| 08/15/2006 | CA2436588C Hydraulic jar device |
| 08/10/2006 | WO2006082421A1 Apparatus and method |
| 08/09/2006 | CN2804373Y Deep well clamshell with single rope and multiple grabs |
| 08/03/2006 | US20060169463 Downhole tool with actuable barrier |
| 08/03/2006 | US20060169456 Jar with adjustable preload |
| 08/01/2006 | US7083209 Hydraulic overshot tool without a nozzle, and method of retrieving a cylinder |
| 07/27/2006 | WO2006077372A1 Spotting fluid compositions and associated methods |
| 07/26/2006 | EP1682746A1 Running and cementing tubing |
| 07/26/2006 | EP1483478B1 Double-cone device and pump |
| 07/26/2006 | EP1434925B1 Wellbore recovery operation |
| 07/26/2006 | CN2799843Y Pipe slips connector |
| 07/26/2006 | CN2799842Y Sliding guide shoe for salvage of downhole articles |
| 07/20/2006 | US20060160705 Spotting fluid compositions and associated methods |
| 07/18/2006 | US7077207 Double-cone device and pump |
| 07/18/2006 | US7077205 Method and device to free stuck objects |
| 07/18/2006 | US7077204 Whip retrieval method and apparatus |
| 07/11/2006 | US7073833 Gripper |
| 07/11/2006 | US7073610 Downhole tool |
| 07/05/2006 | CN2793305Y Fishing and delivering tool of guide cylinder for branched well |
| 06/29/2006 | US20060137874 System and Technique for Orienting and Positioning a Lateral String in a Multilateral System |
| 06/28/2006 | CN1793598A Slant device capable of recovering and fishing tool thereof |
| 06/27/2006 | US7066263 Tension multiplier jar apparatus and method of operation |
| 06/27/2006 | US7066251 Hydraulic jar lock |
| 06/27/2006 | US7066250 Well tubing/casing vibrator apparatus |
| 06/22/2006 | WO2005124098A3 Magnet arrangement for use on a downhole tool |
| 06/22/2006 | US20060131013 Magnetization of target well casing strings tubulars for enhanced passive ranging |
| 06/20/2006 | CA2130591C Effective hydrocarbon blend for removing asphaltenes |
| 05/31/2006 | CN2784577Y Underwater salvaging device |
| 05/30/2006 | US7051810 Downhole force generator and method for use of same |
| 05/24/2006 | EP1274992B1 Apparatus and method for downhole well equipment and process management, identification, and actuation |
| 05/24/2006 | CN2782912Y Whipstock fisher for lateral well |
| 05/17/2006 | EP1266119B1 Method and apparatus for handling tubular goods |
| 05/04/2006 | WO2006045248A1 A high-energy gas fracture tool for through-tubing operation |
| 05/03/2006 | EP1440220B8 An entry well with slanted well bores and method |
| 05/02/2006 | US7036595 Removal of tubulars from wells |
| 04/27/2006 | US20060086505 Combination jar and disconnect tool |
| 04/26/2006 | EP1502001A4 Packer retriever |
| 04/26/2006 | CN2775300Y Multifunction drift size gauge tool |
| 04/19/2006 | CN2773301Y Pumping and well-repairing operation vehicle in oil-field with separated rig |
| 04/18/2006 | CA2190248C Reverse percussion device |
| 04/11/2006 | US7025130 Methods and apparatus to control downhole tools |
| 04/11/2006 | CA2265709C Safety joint |
| 04/05/2006 | EP1254300B1 Method and apparatus for retrieving equipment from a well |
| 04/05/2006 | CN2769498Y Oil field fishing spear in bore hole |
| 04/04/2006 | US7021382 Downhole axial force generating tool |
| 03/30/2006 | US20060065443 Drilling Fluid Filter |
| 03/29/2006 | CN2767647Y Air drilling jar |
| 03/28/2006 | US7017666 Smooth sleeves for drag and VIV reduction of cylindrical structures |
| 03/28/2006 | CA2167857C Running tool |
| 03/22/2006 | CN1749527A Treating method for oil submersible cable fish |
| 03/16/2006 | US20060054322 Multiple impact jar assembly and method |
| 03/14/2006 | US7011156 Percussion tool and method |
| 03/08/2006 | CN2763482Y Fishing spear for packer |
| 03/08/2006 | CN2763481Y Fishing spear for small-diameter high-strength distribution manifold |
| 03/08/2006 | CN2763480Y Stuck releasing oscillator |
| 03/02/2006 | US20060042790 Magnetic tool for retrieving metal objects from a well bore when using coil tubing |
| 03/01/2006 | EP0973994B1 Apparatus for removing an item from a wellbore |
| 02/23/2006 | WO2006020952A2 A highly-parallel, implicit compositional reservoir simulator for multi-million-cell models |
| 02/22/2006 | EP1454033A4 Orientation device for a core sample |
| 02/22/2006 | CN2760218Y Seizing-proof special-purpose fisher for tiles |
| 02/14/2006 | US6997493 Lockable overshot |
| 02/08/2006 | EP0973995B1 Wellbore overshot |
| 02/08/2006 | CN2756819Y Small diameter sucker rod fisher |
| 02/02/2006 | DE112004000226T5 Zangenpositioniersystem und -Verfahren Zangenpositioniersystem and procedures |
| 02/01/2006 | EP1440220B1 An entry well with slanted well bores and method |
| 01/31/2006 | US6991035 Drilling jar for use in a downhole network |
| 01/24/2006 | US6989764 Apparatus and method for downhole well equipment and process management, identification, and actuation |
| 01/24/2006 | US6988551 Jar with adjustable trigger load |
| 01/19/2006 | WO2006006867A1 A jar device for use in coil tubing drilling |
| 01/19/2006 | US20060011344 Coiled tubing conveyed milling |
| 01/18/2006 | CN2752427Y Small dimention high strength returnable fishing spears |
| 01/18/2006 | CN2752426Y Small dimention high strength butt-buckling fishing spears |
| 01/18/2006 | CN2752425Y High-efficiency wire-line workover unit |
| 01/10/2006 | US6984611 Water-in-oil emulsion of isobutyl oleate as its external phase and glycerin as the internal phase for freeing differential stuck pipe in a subterranean well drilling operation |
| 01/05/2006 | US20060001283 Arrangement in a gripper mechanism for a free pipe/rodlike end portion of a downhole tool |
| 01/04/2006 | CN2750035Y Pumping well fishing tool |
| 12/29/2005 | WO2005124098A2 Magnet arrangement for use on a downhole tool |
| 12/29/2005 | US20050287854 Connection apparatus and method |
| 12/29/2005 | US20050284665 Impact enhancing apparatus and method |
| 12/29/2005 | US20050284624 Apparatus for inducing vibration in a drill string |
| 12/28/2005 | EP1610047A2 Connection system for tubular members |
| 12/28/2005 | EP1609945A2 Impact enhancing apparatus and method |
| 12/24/2005 | CA2510532A1 Apparatus for inducing vibration in a drill string |
| 12/23/2005 | CA2510632A1 Connection apparatus and method |
| 12/23/2005 | CA2510619A1 Impact enhancing apparatus and method |
| 12/20/2005 | CA2319258C System, apparatus and method for facilitating retrieval of an item from a well |
| 12/20/2005 | CA2223144C Mechanical-hydraulic double-acting drilling jar |