| Patents for E21B 27 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sand; Drill bits with means for collecting substances, e.g. valve drill bits (1,068) |
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| 08/14/2003 | US20030150614 Canister, sealing method and composition for sealing a borehole |
| 08/07/2003 | US20030145990 Rotary pump for well |
| 08/05/2003 | US6601889 Air-tight bailer system |
| 07/31/2003 | US20030141063 Methods and apparatus for forming a lateral wellbore |
| 07/29/2003 | US6598685 Drilling fluid screen and method |
| 07/23/2003 | CN1432098A Tracer release method for monitoring fluid flow in well |
| 07/22/2003 | US6595281 Apparatus for delivering a flowable substance to a remote location |
| 07/17/2003 | US20030131991 Tracer release method for monitoring fluid flow in a well |
| 06/18/2003 | EP1319115A2 Methods and apparatus for forming a lateral wellbore |
| 06/12/2003 | US20030108393 System for creating a conduit in a borehole formed in an earth formation |
| 06/03/2003 | US6571869 Downhole surge pressure reduction and filtering apparatus |
| 05/27/2003 | US6568475 Isolation container for a downhole electric pump |
| 05/22/2003 | WO2003042485A2 Apparatus for extraction of oil via underground drilling and production location |
| 05/15/2003 | US20030089506 Apparatus for extraction of oil via underground drilling and production location |
| 05/15/2003 | US20030089505 Downhole surge pressure reduction and filtering apparatus |
| 05/13/2003 | US6561269 Canister, sealing method and composition for sealing a borehole |
| 05/02/2003 | EP1306657A2 Air-tight bailer system |
| 05/02/2003 | EP0801704B1 Method for injecting fluid into a wellbore |
| 05/01/2003 | WO2003036020A1 A method and a device for a collecting screw |
| 05/01/2003 | WO2003036018A2 Downhole actuator and tool |
| 05/01/2003 | CA2463610A1 Device for performing a downhole operation |
| 04/24/2003 | US20030075940 Air-tight bailer system |
| 04/24/2003 | CA2405257A1 Air tight bailer system |
| 04/22/2003 | CA2090351C Methods and apparatus for removing debris from a well bore |
| 04/10/2003 | US20030066662 Scraper tool |
| 03/26/2003 | EP1295035A1 Isolation container for a downhole electric pump |
| 03/25/2003 | US6536525 Methods and apparatus for forming a lateral wellbore |
| 03/19/2003 | EP1292757A1 System for creating a conduit in a borehole formed in an earth formation |
| 03/18/2003 | US6533036 Method and a tool for treating the wall of a critical zone in a borehole |
| 03/06/2003 | CA2357100A1 Anti-wobbling bailer with high speed insertion |
| 02/26/2003 | EP1285148A1 Tracer release method for monitoring fluid flow in a well |
| 02/20/2003 | US20030034161 Pump control method and apparatus |
| 02/19/2003 | CN2536776Y Clean-out bailer for low pressure oil or gas well |
| 02/12/2003 | EP1088151B1 Downhole milling device |
| 02/05/2003 | CN1395023A Quick workover process |
| 01/03/2003 | WO2003001029A1 Electrical pump for use in well completion |
| 01/02/2003 | EP1268975A2 Sand removal and device retrieval tool |
| 12/26/2002 | US20020197174 Electrical pump, and method for using plurality of submersible electrical pumps for well completion |
| 12/25/2002 | CN1386954A Vacum tube-type bailing process and its borehole tool |
| 12/11/2002 | EP1264073A1 Downhole surge pressure reduction and filtering apparatus |
| 11/28/2002 | US20020174987 Sand removal and device retrieval tool |
| 11/21/2002 | US20020170713 System for forming a window and drilling a sidetrack wellbore |
| 11/07/2002 | US20020162655 Screened boot basket/filter |
| 11/06/2002 | EP1254300A1 Method and apparatus for retrieving equipment from a well |
| 10/17/2002 | WO2002081860A1 Pump control method and apparatus |
| 10/17/2002 | WO2002081858A1 Apparatus and method for collecting debris in a well bore |
| 10/16/2002 | EP1203140A4 Anti-wobbling bailer with high speed insertion |
| 10/10/2002 | US20020144821 Apparatus and system control fot the removal of fluids and gas from a well |
| 10/10/2002 | US20020144816 Apparatus and system control for the removal of fluids and gas from a well |
| 10/08/2002 | US6460622 Apparatus and system control for the removal of fluids and gas from a well |
| 10/02/2002 | EP1042584B1 A method and a tool for treating the wall of a critical zone in a borehole |
| 10/01/2002 | US6457760 High speed insertion bailer having snap-in spider for valve alignment |
| 09/19/2002 | WO2002023008A3 Methods and apparatus for forming a lateral wellbore |
| 09/11/2002 | EP1239113A2 Method and apparatus for well testing |
| 09/03/2002 | CA2074022C Sand control with resin and explosive |
| 08/22/2002 | WO2002064941A1 Bailer for simultaneously recovery of liquid and gas from a well |
| 08/21/2002 | EP1232326A2 Device for injecting a fluid into a formation |
| 08/15/2002 | WO2002063104A2 Pile reamer with spoil container |
| 08/14/2002 | CN2505585Y High-efficiency oil well bailing device |
| 08/14/2002 | CN2505584Y Downhole electric sand-suction bailing device |
| 08/06/2002 | US6427776 Sand removal and device retrieval tool |
| 07/17/2002 | EP1223303A1 Treatment fluid injection apparatus and method |
| 07/10/2002 | EP1221534A2 Proppant containment apparatus and methods of using same |
| 05/09/2002 | US20020053428 Reverse circulation junk basket |
| 05/08/2002 | EP1203140A1 Anti-wobbling bailer with high speed insertion |
| 05/02/2002 | WO2002035055A1 Combined milling and scraping tool |
| 04/16/2002 | US6371205 Bore hole grouting apparatus and method |
| 04/03/2002 | CN1343281A Drill for making wide diameter and high depth holes and method for carrying out said holes |
| 03/26/2002 | US6360823 Apparatus and method for performing downhole measurements |
| 03/21/2002 | WO2002023008A2 Methods and apparatus for forming a lateral wellbore |
| 03/21/2002 | WO2001073262A3 Sand removal and device retrieval tool |
| 01/30/2002 | EP1175550A1 Inflatable packer setting tool assembly |
| 01/29/2002 | US6341654 Inflatable packer setting tool assembly |
| 01/29/2002 | US6341653 Junk basket and method of use |
| 01/23/2002 | EP1174585A2 Apparatus and method for performing downhole measurements |
| 01/10/2002 | WO2002002947A1 Isolation container for a downhole electric pump |
| 01/10/2002 | WO2001038691A3 Device for injecting a fluid into a formation |
| 01/02/2002 | EP1165935A1 Method and apparatus for cleaning boreholes |
| 12/27/2001 | WO2001098626A1 System for creating a conduit in a borehole formed in an earth formation |
| 12/27/2001 | CA2411241A1 System for creating a conduit in a borehole formed in an earth formation |
| 12/12/2001 | EP1161612A1 Drill for making wide diameter and high depth holes and method for carrying out said holes |
| 12/06/2001 | WO2001092685A1 Tracer release method for monitoring fluid flow in a well |
| 10/04/2001 | WO2001073262A2 Sand removal and device retrieval tool |
| 10/02/2001 | US6295867 Geological sample sub |
| 09/20/2001 | WO2001069036A1 Downhole surge pressure reduction and filtering apparatus |
| 08/21/2001 | US6276452 Apparatus for removal of milling debris |
| 08/14/2001 | US6273482 Post hole digger |
| 08/14/2001 | US6273190 Wellbore sidetrack plug |
| 08/09/2001 | WO2001057357A1 Method and apparatus for retrieving equipment from a well |
| 07/25/2001 | CN1305562A Downhole milling device |
| 07/20/2001 | CA2331473A1 Fluid injection apparatus and method with controlled volume displacement for use in subterranean wells |
| 07/03/2001 | US6254154 Hole digging tool |
| 05/31/2001 | WO2001038691A2 Device for injecting a fluid into a formation |
| 05/17/2001 | DE10039870A1 Bore gripper is for producing boreholes in suitable ground surfaces and has frame on underside of which are blades pivotable between open and closed positions |
| 04/24/2001 | US6220356 Method and apparatus for well treating |
| 04/04/2001 | EP1088151A1 Downhole milling device |
| 03/06/2001 | US6196334 Excavating tool |
| 02/20/2001 | US6189617 High volume sand trap and method |
| 01/23/2001 | US6176311 Downhole cutting separator |
| 01/18/2001 | WO2001004462A1 Anti-wobbling bailer with high speed insertion |