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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04/21/2010 | EP2176504A1 Multi-purpose well servicing apparatus |
04/14/2010 | CN201437698U Scale settler for oil/gas gathering and transportation pipeline |
04/01/2010 | WO2010010326A3 Pipeline entry system |
03/31/2010 | EP2167785A1 Magnet fixing device in a cleaning tool |
03/23/2010 | US7681633 Method and apparatus for preventing spillage or loss of drill fluids |
03/18/2010 | WO2009153560A3 Improved downhole apparatus |
03/10/2010 | CN201420520Y Highly-effective settling cup |
03/03/2010 | CN201416403Y Novel oilwell intercepting device |
02/23/2010 | US7665519 System and method for downhole sampling or sensing of clean samples of component fluids of a multi-fluid mixture |
01/28/2010 | US20100018775 Drilling Tool with Fluid Cleaner |
01/19/2010 | US7647962 Assembly and method of alternative pumping using hollow rods without tubing |
01/14/2010 | US20100006279 Intervention Tool with Operational Parameter Sensors |
12/23/2009 | WO2009153560A2 Improved downhole apparatus |
12/23/2009 | CN201367877Y Pebble collecting drill bit for pile foundation construction |
12/09/2009 | CN201358403Y Special compacted wire rope for sand-bailing in oilfield |
11/25/2009 | EP2122106A1 Drilling tool with fluid cleaner |
11/03/2009 | US7610957 Downhole debris catcher and associated mill |
10/29/2009 | US20090266546 Apparatus and Method For Discharging Multiple Fluids Downhole |
09/22/2009 | CA2541947C Sand removal and device retrieval tool |
09/11/2009 | WO2009109599A1 A method and an apparatus for downhole injecting one or more treatment fluids. |
09/02/2009 | CN201301676Y Oil-water well sand pump |
08/27/2009 | US20090211756 Formation tester with low flowline volume |
08/19/2009 | CN201292787Y Oil fetching and bailing suspension rope apparatus |
08/13/2009 | US20090200028 Wellbore delivery apparatus |
07/22/2009 | CN101487383A Oil/gas/water well sand pumping device |
07/08/2009 | EP2077373A1 Extruding and expanding drill equipment and the drilling method thereof |
07/07/2009 | US7556100 Apparatus and method for delivering chemicals into an underground well |
06/23/2009 | US7549480 Device for performing a downhole operation |
06/18/2009 | US20090151952 Energized fluids and pressure manipulation for subsurface applications |
06/17/2009 | CN201258709Y Sand shovel special for bailing in horizontal well |
05/28/2009 | WO2009065535A1 Well cleaning apparatus |
05/21/2009 | US20090126933 Device and method for retrieving debris from a well |
05/20/2009 | CN201241645Y Alloy double-valve sand-depositing machine |
05/13/2009 | CN201236657Y Casing milling oriented sand-settling device |
04/22/2009 | EP2049761A2 Laminate pressure-containing body for a well tool |
04/15/2009 | CN201221328Y Scraping and sweeping righting type sedimentation cup |
04/09/2009 | WO2009046307A2 Wellbore and reservoir treatment device |
04/07/2009 | CA2410398C Tracer release method for monitoring fluid flow in a well |
03/12/2009 | US20090065194 Downhole Sliding Sleeve Combination Tool |
03/11/2009 | CN101382056A Shovel special for bailing in horizontal well |
03/03/2009 | US7497260 Junk removal tool |
02/26/2009 | WO2007098285A3 Marginal oil extraction system |
02/12/2009 | WO2009020730A1 Eductor jet bushing for downhole use |
02/10/2009 | US7487831 Downhole surge pressure reduction and filtering apparatus |
02/05/2009 | US20090032256 Throttle unit for dump bailer and method of blocking a water out zone in a production well utilizing the same |
01/28/2009 | CN201187269Y Pressure-reducing sand deposition machine |
01/27/2009 | US7481271 Marginal oil extraction system |
01/20/2009 | US7478687 Coiled tubing conveyed milling |
01/14/2009 | CN201180525Y Apparatus used for oil well horizontal sand pumping |
01/14/2009 | CN201180524Y System used for oil well horizontal sand pumping |
01/14/2009 | CN201180523Y System used for oil well sand pumping |
01/14/2009 | CN201180522Y Apparatus used for horizontal well sand pumping |
01/14/2009 | CN201180521Y System used for horizontal well sand pumping |
01/14/2009 | CN201180520Y Apparatus used for oil well sand pumping |
01/14/2009 | CN201180508Y Negative pressure sand pumping apparatus for oil gas well |
01/06/2009 | US7472745 Well cleanup tool with real time condition feedback to the surface |
12/25/2008 | US20080314584 Ball catcher for wellbore operations |
12/18/2008 | WO2008021826A3 Laminate pressure-containing body for a well tool |
11/20/2008 | WO2008119085A3 Tubular cutting device |
11/18/2008 | US7451823 Well chemical treatment utilizing plunger lift delivery system with chemically improved plunger seal |
11/13/2008 | US20080277166 Downhole Drilling of a Lateral Hole |
11/13/2008 | US20080277121 Dust control system for transferring dry material used in subterranean wells |
10/30/2008 | WO2008024547A3 Well chemical treatment utilizing plunger lift delivery system with chemically improved plunger seal |
10/21/2008 | US7438125 Variable orifice bypass plunger |
10/14/2008 | CA2338416C Bore hole grouting apparatus and method |
10/08/2008 | CN201129168Y Dirty depositing device |
10/01/2008 | CN101275462A Horizontal well bailing system and method |
09/18/2008 | WO2008016868A9 Downhole abrading tool having a taggant injection assembly for indicating excessive wear |
09/04/2008 | WO2008104177A1 Drilling tool with fluid cleaner |
09/04/2008 | CA2685061A1 Drilling tool with fluid cleaner |
09/02/2008 | US7419937 Antiscaling agent for well bores; sustained release |
08/27/2008 | CN101250994A Oil well sand-pumping system as well as sand-pumping method thereof |
08/27/2008 | CN101250993A Horizontal oil well sand-pumping device as well as sand-pumping method thereof |
08/27/2008 | CN101250992A Oil well sand-pumping device as well as sand-pumping method thereof |
08/27/2008 | CN101250991A Oil well horizontal sand-pumping device as well as sand-pumping method thereof |
08/27/2008 | CN101250990A Oil well horizontal sand-pumping device as well as sand-pumping method thereof |
08/20/2008 | CN201103358Y High-capacity bailer |
07/31/2008 | US20080179054 Methods for expandable storage and metering |
07/30/2008 | CN201092826Y Anti-drop sand-pumping rotary rope device |
07/17/2008 | WO2006120581A3 Digger for piles |
06/12/2008 | WO2008069815A1 Low resin demand foundry media |
05/28/2008 | CN201065751Y Movable board type water injection filter |
05/21/2008 | CN101182758A Oilfield down-hole bailing tub |
05/08/2008 | WO2008016868A8 Downhole abrading tool having a taggant injection assembly for indicating excessive wear |
05/06/2008 | US7367392 Wellbore apparatus with sliding shields |
04/10/2008 | WO2008017019A3 Annular flow shifting device |
04/03/2008 | US20080078554 Imputing strength gradient in pressure vessels |
03/20/2008 | US20080066911 Oilfield material delivery mechanism |
03/20/2008 | US20080066908 System and method for downhole sampling or sensing of clean samples of component fluids of a multi-fluid mixture |
03/20/2008 | US20080066904 Formation Fluid Sampling Tools and Methods Utilizing Chemical Heating |
03/13/2008 | US20080060802 System for reducing adhesion and cohesion between non metallic bailers and side wall of wells |
03/11/2008 | US7341108 Well downhole liquid dispenser |
02/28/2008 | WO2008024547A2 Well chemical treatment utilizing plunger lift delivery system with chemically improved plunger seal |
02/27/2008 | CN201027513Y Spraying bailing bucket |
02/27/2008 | CN201027512Y Sand pumping device of oil-water well |
02/21/2008 | WO2008021826A2 Laminate pressure-containing body for a well tool |
02/20/2008 | CN201024943Y Water injection well sand dragger |
02/14/2008 | US20080035328 Laminate pressure containing body for a well tool |
02/13/2008 | EP1644671B1 A method of constructing a geothermal heat exchanger |
02/07/2008 | WO2008016868A1 Downhole abrading tool having a taggant injection assembly for indicating excessive wear |