| Patents for E21B 21 - Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor (13,780) |
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| 02/25/2010 | WO2010020747A2 High rate stimulation method for deep, large bore completions |
| 02/25/2010 | WO2009140450A3 Cuttings transfer system |
| 02/25/2010 | US20100044054 Drill String Control Valves and Methods |
| 02/25/2010 | US20100044044 Controlling transient underbalance in a wellbore |
| 02/25/2010 | CA2734351A1 High rate stimulation method for deep, large bore completions |
| 02/25/2010 | CA2731784A1 Fluid injection completion techniques |
| 02/24/2010 | EP2156907A1 Equipment for treating pollutants in a soil |
| 02/24/2010 | EP2156008A1 Sealing device and method for sealing a casing |
| 02/24/2010 | EP2156007A1 Determination and control of wellbore fluid level, output flow, and desired pump operating speed, using a control system for a centrifugal pump disposed within the wellbore |
| 02/24/2010 | CN201412095Y Two-way well flushing valve for horizontal well |
| 02/24/2010 | CN201412094Y Pulling type workover fluid processing vehicle |
| 02/24/2010 | CN201412093Y Drilling fluid high frequency vibratory screen |
| 02/24/2010 | CN201412092Y Insertion-type sand cleaning gate of mud circulation tank |
| 02/24/2010 | CN201412091Y Wheel-type drilling fluid circulation system moving device |
| 02/24/2010 | CN101655006A Automatic downlink system |
| 02/23/2010 | USRE41141 Combined drilling apparatus and method |
| 02/23/2010 | US7666820 non-aqueous oil phase which contains paraffins a mixture o having from 5 to 22 carbon atoms; andinternal olefins having from 12 to 30 carbon atoms in the molecule; in the form of a blend withcarboxylic esters of the formula R COO R', low levels of toxicity towards marine microorganisms |
| 02/23/2010 | US7665739 Pressure-actuated seals for rotating members |
| 02/23/2010 | US7665549 Entrainment fluid channeling device for a down-hole drill string |
| 02/23/2010 | US7665546 Metal debris cleanout system and method |
| 02/23/2010 | US7665545 Pressure controlled downhole operations |
| 02/23/2010 | US7665543 Permanent downhole deployment of optical sensors |
| 02/21/2010 | CA2675341A1 Downhole mechanisms |
| 02/18/2010 | WO2010018399A2 Apparatus and method for facilitating separation of hydrocarbons from hydrocarbon laden drill cuttings produced in the drilling of wellbores |
| 02/18/2010 | WO2010018356A2 Fluid supply system |
| 02/18/2010 | US20100038318 Enhanced solids control |
| 02/18/2010 | US20100038143 Drill cuttings treatment systems |
| 02/18/2010 | CA2852132A1 Multiphase drilling systems and methods |
| 02/18/2010 | CA2840367A1 Apparatus and method for facilitating separation of hydrocarbons from hydrocarbon laden drill cuttings produced in the drilling of wellbores |
| 02/18/2010 | CA2731553A1 Apparatus and method for facilitating separation of hydrocarbons from hydrocarbon laden drill cuttings produced in the drilling of wellbores |
| 02/17/2010 | EP2153015A1 Downhole flow control tool and method |
| 02/17/2010 | CN201407041Y Electric coal drill side water inlet device |
| 02/17/2010 | CN201406985Y Remotely-controlled pneumatic hydraulic reverse-circulation well drilling machine |
| 02/16/2010 | CA2293211C Process including a reversible foaming composition |
| 02/11/2010 | WO2009101424A3 Flow stop valve |
| 02/10/2010 | EP2150677A1 Rig storage system |
| 02/10/2010 | CN201401140Y Translational-motion elliptic drilling fluid vibrating screen |
| 02/04/2010 | WO2010012976A1 System and method for blending a dry material with a fluid in a closed environment |
| 02/04/2010 | US20100025111 Direct Drive MWD Tool |
| 02/04/2010 | US20100025042 Drilling method and downhole cleaning tool |
| 02/04/2010 | US20100025041 Portable well treating fluid mixing system and method |
| 02/04/2010 | CA2731840A1 System and method for blending a dry material with a fluid in a closed environment |
| 02/03/2010 | EP2149440A2 Water treatment pad for drilling tool |
| 02/03/2010 | CN201396087Y Device for processing solid-phase materials including setting sand at the bottom of nitrogen gas drilled well |
| 02/03/2010 | CN201396086Y Plate-type wavy screen mesh |
| 02/03/2010 | CN201396085Y Internal spraying bowl-lifting drill pipe filter |
| 02/03/2010 | CN201396084Y Water injection well automatic control well cleaning device |
| 02/03/2010 | CN201396076Y Pneumatic backcycling drill tool for fixing hole |
| 02/02/2010 | US7655096 Coiled tubing wellbore cleanout |
| 02/02/2010 | US7655061 Cyclone assembly and method for increasing or decreasing flow capacity of a cyclone separator in use |
| 02/02/2010 | US7654583 Device for a pressure-compensated swivel |
| 02/02/2010 | US7654397 Gravity separator for a multi-phase effluent |
| 02/02/2010 | US7654325 Methods and apparatus for handling and drilling with tubulars or casing |
| 02/02/2010 | US7654319 Closed loop multiphase underbalanced drilling process |
| 02/02/2010 | CA2608132C Drill cuttings re-injection system |
| 02/02/2010 | CA2499760C Reverse circulation directional and horizontal drilling using concentric coil tubing |
| 02/02/2010 | CA2491004C A novel foamer composition and methods for making and using same |
| 02/02/2010 | CA2394858C Acid based micro-emulsions |
| 02/01/2010 | CA2674350A1 Method and apparatus for retrieving an assembly from a wellbore |
| 01/28/2010 | WO2009126774A3 Automated mud slowness estimation |
| 01/28/2010 | DE102008034478A1 Drilled cutting disposing method for use in construction industry, involves introducing soil, water or flushing medium into container for stabilizing container, and discharging drilled cuttings from rig for disposal during drilling process |
| 01/27/2010 | CN201392290Y Magnetic driving sealing device of turnover agitating filter press |
| 01/27/2010 | CN201391258Y Drilling fluid solid control system tank bottom valve |
| 01/27/2010 | CN201391257Y Adjustable solid control tank communicating device |
| 01/27/2010 | CN201391256Y Oil-water well sand washing tool |
| 01/27/2010 | CN201391255Y Continuous sand washing device for oil wells and water wells |
| 01/27/2010 | CN101636553A Equipment for intercepting and diverting a liquid circulation flow |
| 01/27/2010 | CN100585122C Two-tube reverse circulation continuous sand flushing device |
| 01/26/2010 | US7651982 water, HCl, a cationic HCl corrosion inhibitor e.g. alkylquinoline quaternary ammonium compound and a conjugate ion pair of a cationic amine oxide (dimethylcocoalkylamine oxid) surfactant and an anionic surfactant (Na-laureth sulfate) that does not react with the cationic corrosion inhibitor |
| 01/26/2010 | US7650950 Drilling system and method |
| 01/26/2010 | US7650944 Vessel for well intervention |
| 01/26/2010 | US7650941 Equalizing injection tool |
| 01/26/2010 | CA2361653C Method for determining the thermal profile of a drilling fluid in a well |
| 01/21/2010 | WO2010008653A2 Apparatus for cleaning boreholes within substrates |
| 01/21/2010 | US20100012320 Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 01/21/2010 | CA2728072A1 Apparatus for cleaning boreholes within substrates |
| 01/20/2010 | CN201386552Y Device for automatically controlling grouting of drilling and workover operation |
| 01/20/2010 | CN201386522Y Self-advancing high-pressure cavitating jet washing device |
| 01/20/2010 | CN201386521Y Well cleanout valve capable of bearing high pressure |
| 01/20/2010 | CN201386520Y Environment-friendly efficient water well cleaning device |
| 01/20/2010 | CN101629479A Drilling fluid conveying device provided with self-oscillation superchargers |
| 01/19/2010 | US7648311 Cable bolt |
| 01/19/2010 | CA2516649C Drill shoe |
| 01/19/2010 | CA2438885C Liquid lift method for drilling risers |
| 01/19/2010 | CA2433770C Sampling of hydrocarbons from geological formations |
| 01/19/2010 | CA2403308C Dual snap action for valves |
| 01/14/2010 | WO2010006217A1 Apparatus and method for data transmission from a rotating control device |
| 01/14/2010 | WO2009142836A3 System and method for improving operational characteristics of devices used in a well |
| 01/14/2010 | WO2009129103A3 Pressure control system |
| 01/14/2010 | US20100006302 Locking arrangement to store setting forces |
| 01/14/2010 | US20100006282 Assembly for pressure control when drilling and method to control pressure when drilling in a formation with unpredictable high formation pressure |
| 01/14/2010 | CA2729323A1 Apparatus and method for data transmission from a rotating control device |
| 01/13/2010 | EP2143875A2 Multi-purpose float |
| 01/13/2010 | EP2142753A1 Cuttings treatment and reuse |
| 01/13/2010 | EP2142747A2 Method and assembly for abrasive jet drilling |
| 01/13/2010 | EP2142615A1 Fluid pressure transmission pill |
| 01/13/2010 | CN201381814Y Liquid level monitoring instrument of drilling fluid |
| 01/13/2010 | CN201381813Y Cylindrical gas-liquid cyclone separator |
| 01/13/2010 | CN201381812Y Well flushing tool |
| 01/13/2010 | CN101624900A Circulation gas-drilling process system and method thereof |