| 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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| 10/18/2005 | US6955216 Device for injecting a fluid into a formation |
| 10/13/2005 | DE202005007260U1 Gravel pump for well construction with facilitated distribution and fixed piston rod has pump head with distribution openings cut out of both sides to enable simpler and easier emptying without removing or hanging out piston rod |
| 10/04/2005 | US6951251 Junk basket and method |
| 09/13/2005 | US6942035 Method and apparatus for retrieving equipment from a well |
| 08/09/2005 | US6926504 Submersible electric pump |
| 08/04/2005 | WO2005071208A1 Downhole drilling of a lateral hole |
| 08/04/2005 | WO2005035932A3 Junk basket and method |
| 08/04/2005 | CA2553236A1 Downhole drilling of a lateral hole |
| 08/03/2005 | EP1559864A1 Downhole drilling of a lateral hole |
| 07/14/2005 | US20050150658 Method and apparatus for enhancing oil and gas flow in a well |
| 06/30/2005 | US20050139353 Earth loop installation with sonic drilling |
| 06/28/2005 | US6910537 Canister, sealing method and composition for sealing a borehole |
| 06/23/2005 | WO2004044370A3 Devices and methods for extraction, transportation and/or release of material |
| 06/09/2005 | DE19914839B4 Verfahren zum Erstellen einer reaktiven Schmalwand Method for creating a reactive cress |
| 06/07/2005 | CA2353176C Apparatus and method for performing downhole measurements |
| 05/26/2005 | US20050109500 Well downhole liquid dispenser |
| 05/17/2005 | US6892834 Piloted drill barrel and method of using same |
| 04/21/2005 | WO2005035932A2 Junk basket and method |
| 04/14/2005 | WO2005033471A1 A feed pump for a sand removal apparatus in an underground well |
| 04/12/2005 | US6877965 Mechanical bladder pump |
| 04/07/2005 | US20050072571 Junk basket and method |
| 03/22/2005 | US6868904 Well development tool and method for use thereof |
| 03/22/2005 | CA2276169C Downhole cutting separator |
| 03/09/2005 | EP1268975B1 Sand removal and device retrieval tool |
| 03/02/2005 | EP1510650A2 Downhole surge pressure reduction and filtering apparatus |
| 03/02/2005 | EP1264073B1 Downhole surge pressure reduction and filtering apparatus |
| 02/24/2005 | US20050039909 Groundwater well sample device |
| 02/23/2005 | EP1508667A2 Sand removal and device retrieval tool |
| 02/15/2005 | US6854536 Pile reamer with spoil container |
| 02/08/2005 | CA2384475C Screened boot basket/filter |
| 02/03/2005 | US20050022994 Well chemical treatment utilizing plunger lift delivery system |
| 02/02/2005 | CN1575370A Device for performing a downhole operation |
| 01/30/2005 | CA2473017A1 Well chemical treatment utilizing plunger lift deliver system |
| 01/20/2005 | WO2004097155A3 Casing with isolated annular space |
| 01/13/2005 | WO2005003648A1 A method of constructing a geothermal heat exchanger |
| 01/13/2005 | CA2532914A1 A method of constructing a geothermal heat exchanger |
| 01/12/2005 | CN1184406C Vaccum tube-type bailing process and its borehole tool |
| 01/06/2005 | US20050000687 Device for performing a downhole operation |
| 12/29/2004 | EP1175550B1 Inflatable packer setting tool assembly |
| 12/16/2004 | US20040251023 Downhole surge pressure reduction and filtering apparatus |
| 12/08/2004 | CN1179114C Quick workover process for oil well |
| 12/02/2004 | US20040238174 Down hole well cleaning apparatus |
| 11/11/2004 | WO2004097155A2 Casing with isolated annular space |
| 11/09/2004 | CA2254563C High-volume sand trap and method |
| 10/05/2004 | US6799634 Tracer release method for monitoring fluid flow in a well |
| 09/29/2004 | CN2644662Y Hydraulic driving bailing drum device |
| 09/28/2004 | US6796381 Apparatus for extraction of oil via underground drilling and production location |
| 09/16/2004 | US20040177951 Sand removal and device retrieval tool |
| 09/01/2004 | EP1285148B1 Tracer release method for monitoring fluid flow in a well |
| 08/12/2004 | WO2004011763A3 Mechanical bladder pump |
| 08/11/2004 | EP1444404A2 Pile reamer with spoil container |
| 07/29/2004 | WO2003069123A3 Drilling fluid screen and method |
| 07/15/2004 | US20040138068 Antiscaling agent for well bores; sustained release |
| 07/08/2004 | WO2004057152A1 Method for providing treatment chemicals in a subterranean well |
| 07/06/2004 | CA2193309C Early evaluation system with pump and method of servicing a well |
| 06/29/2004 | US6755252 Downhole surge pressure reduction and filtering apparatus |
| 06/24/2004 | WO2004053290A1 Downhole tool with actuable barrier |
| 06/17/2004 | US20040112607 Devices and methods for extraction, transportation and/or release of material |
| 06/10/2004 | US20040108143 Pile reamer with spoil container |
| 06/02/2004 | EP1161612B1 Drill for making wide diameter and high depth holes and method for carrying out said holes |
| 05/27/2004 | WO2004044370A2 Devices and methods for extraction, transportation and/or release of material |
| 05/27/2004 | WO2002063104A3 Pile reamer with spoil container |
| 05/25/2004 | US6739412 Pile boring tools |
| 05/20/2004 | US20040094302 Apparatus and method for debris in a well bore |
| 05/13/2004 | US20040091378 Mechanical bladder pump |
| 05/06/2004 | US20040084186 Well treatment apparatus and method |
| 05/06/2004 | EP1416118A1 Well treatment apparatus and method |
| 04/30/2004 | CA2444549A1 Well treatment apparatus and method |
| 04/13/2004 | US6719056 Sand removal method |
| 04/13/2004 | US6719050 Method and apparatus for removing solid material from a well using a rotary pump |
| 03/25/2004 | WO2003042485A3 Apparatus for extraction of oil via underground drilling and production location |
| 03/23/2004 | US6708762 Methods and apparatus for forming a lateral wellbore |
| 03/04/2004 | US20040040728 Pile boring tools |
| 03/03/2004 | EP1394352A1 Boring bucket |
| 02/24/2004 | US6695058 Method and apparatus for cleaning boreholes |
| 02/24/2004 | US6695056 System for forming a window and drilling a sidetrack wellbore |
| 02/05/2004 | WO2004011763A2 Mechanical bladder pump |
| 02/05/2004 | CA2494035A1 Mechanical bladder pump |
| 01/22/2004 | US20040011528 Combined milling and scraping tool |
| 01/08/2004 | US20040003923 Method and apparatus for retrieving equipment from a well |
| 01/06/2004 | CA2117085C Downhole activated system for perforating a wellbore |
| 12/11/2003 | US20030226664 Sand removal and device retrieval tool |
| 12/02/2003 | US6655475 Product and method for treating well bores |
| 12/02/2003 | US6655474 Drill for making wide diameter and high depth holes and method for carrying out said holes |
| 11/13/2003 | WO2003071084A3 System for forming a window and drilling a sidetrack wellbore |
| 11/04/2003 | US6640904 Sand removal and device retrieval tool |
| 10/16/2003 | US20030192697 Isolation container for a downhole electric pump |
| 10/15/2003 | CN2580097Y Serial switching device of negative pressure bailing tube |
| 10/09/2003 | WO2003083253A1 Junk removal tool |
| 09/30/2003 | CA2291991C Junk basket and method of use |
| 09/18/2003 | WO2003036018A3 Downhole actuator and tool |
| 09/09/2003 | US6615925 Pump control method and apparatus |
| 09/09/2003 | US6615924 Apparatus and system control for the removal of fluids and gas from a well |
| 09/02/2003 | US6612377 Scraper tool |
| 08/28/2003 | WO2003071084A2 System for forming a window and drilling a sidetrack wellbore |
| 08/27/2003 | CN1119499C Downhole milling device |
| 08/21/2003 | WO2003069123A2 Drilling fluid screen and method |
| 08/20/2003 | CN1437674A System for creating conduit in a borehole formed in an earth formation |
| 08/19/2003 | US6607031 Screened boot basket/filter |
| 08/14/2003 | US20030150616 Drilling fluid screen and method |