| Patents for E21B 43 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells (64,186) |
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| 05/02/2012 | CN202209170U Double-motor cam type testing-adjusting arm of water injection well testing-adjusting meter |
| 05/02/2012 | CN202209169U Pickling and filling tool outside horizontal well casing |
| 05/02/2012 | CN202209168U Built-in effect-enhanced fracturing bomb |
| 05/02/2012 | CN202209167U Non-isothermal steam flooding experiment device |
| 05/02/2012 | CN202209166U Polymer or ternary proportional control pump mixing valve group device |
| 05/02/2012 | CN202209165U Novel composite perforating gun with blind hole |
| 05/02/2012 | CN202209164U Two-stage driving movable-filtering rolling-roller type production screen |
| 05/02/2012 | CN202209163U Cluster-well oil pumping unit with crank and sliding block |
| 05/02/2012 | CN202209161U Stopper with adjustable low |
| 05/02/2012 | CN202209160U Stopper water-distribution butting device |
| 05/02/2012 | CN102439259A Surfactant amendments for the stimulation of biogenic gas generation in deposits of carbonaceous materials |
| 05/02/2012 | CN102434192A Device and method for enhancing coal seam fracturing effect |
| 05/02/2012 | CN102434144A U-shaped well oil production method for oil field |
| 05/02/2012 | CN102434143A Vent-hole bi-sleeve heat exchanger for underground coal gasification and heat exchange protecting method |
| 05/02/2012 | CN102434142A Coal underground gasification method |
| 05/02/2012 | CN102434141A Method for mining sylvite in underground carnallite ore |
| 05/02/2012 | CN102434140A Self-diverting foamed system |
| 05/02/2012 | CN102434139A Method for using solid-phase proppant for water-plugging profile-control of oil-water well |
| 05/02/2012 | CN102434138A Hot water injection circulation viscosity reduction system for producing ultra-deep ultra-heavy oil and application method thereof |
| 05/02/2012 | CN102434137A Ultralow interface tension coupling type air-foam oil displacement method |
| 05/02/2012 | CN102434136A Electric pump oil production positive water injection integral pipe column and application method thereof |
| 05/02/2012 | CN102434135A Multi-layer discharge and mining device for multiple seam developed area |
| 05/02/2012 | CN102434134A Method for exploiting high viscous and congealable crude oil with water-jet cutting technology |
| 05/02/2012 | CN102434133A Deep penetration large-aperture perforating bullet |
| 05/02/2012 | CN102434132A Elastic alignment pipe component for perforation of oil and gas wells |
| 05/02/2012 | CN102434131A Sand-preventing filling method and equipment for oil and gas well |
| 05/02/2012 | CN102434130A System and method for locating ultra-deepwater underwater stand pipe supporting pontoon |
| 05/02/2012 | CN102434129A Ultra-deepwater offshore oil-gas engineering developing system and mounting method thereof |
| 05/02/2012 | CN102434128A Walking beam type electric manually-balanced pumping unit |
| 05/02/2012 | CN102434127A Pulsating reciprocating type hydraulic pumping unit |
| 05/02/2012 | CN101382065B No-shaft underground gasification process |
| 05/01/2012 | US8167049 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well |
| 05/01/2012 | US8167046 Method and apparatus to hydraulically bypass a well tool |
| 05/01/2012 | US8167045 Methods and compositions for stabilizing formation fines and sand |
| 05/01/2012 | US8167044 Shaped charge |
| 05/01/2012 | US8167043 Degradable material assisted diversion or isolation |
| 05/01/2012 | US8167042 Method of forming self-diverting high-rate water packs |
| 05/01/2012 | US8167041 Apparatus and method for energy-efficient and environmentally-friendly recovery of bitumen |
| 05/01/2012 | US8167040 In situ combustion in gas over bitumen formations |
| 05/01/2012 | US8167039 Method of fracturing a subterranean formation at optimized and pre-determined conditions |
| 05/01/2012 | US8167037 Method and device for feeding liquefied carbon-dioxide gas into an aquifer deep underground |
| 05/01/2012 | US8167036 Method for in-situ combustion of in-place oils |
| 05/01/2012 | CA2756519A1 Method and apparatus for single-trip time progressive wellbore treatment |
| 05/01/2012 | CA2708591C Methods and apparatus for wellbore construction and completion |
| 05/01/2012 | CA2652042C Energized fluid for generating self-cleaning filter cake |
| 05/01/2012 | CA2575212C Cement-free zeolite and fly ash settable fluids and methods therefor |
| 05/01/2012 | CA2467571C Open hole anchor |
| 04/29/2012 | CA2755755A1 Subsurface heating device |
| 04/28/2012 | CA2756640A1 Method for developing an oil field using production and seismic data history matching |
| 04/28/2012 | CA2755623A1 Gravel pack assembly for bottom up/toe-to-heel packing |
| 04/28/2012 | CA2719686A1 Application of a specialized slurry used for cementing tubulars in wells producing synthesis gas by underground coal gasification |
| 04/26/2012 | WO2012054445A2 Expandable casing patch |
| 04/26/2012 | WO2012054440A2 Offshore tower for drilling and/or production |
| 04/26/2012 | WO2012054392A2 Systems and methods for insulating y-points of three phase electric motors |
| 04/26/2012 | WO2012054342A2 Submersible pump system |
| 04/26/2012 | WO2012054290A2 Screen assembly |
| 04/26/2012 | WO2012054150A1 Non-ionic alkali polymer solutions for enhanced oil recovery in a subterranean formation |
| 04/26/2012 | WO2012054139A2 Methods for establishing a subsurface fracture network |
| 04/26/2012 | WO2012052496A1 Excavating deposits from an underground formation layer |
| 04/26/2012 | WO2012051705A1 Tools and methods for use in completion of a wellbore |
| 04/26/2012 | WO2012030476A3 Method, system,and production and storage facility for offshore lpg and lng processing of associated gases |
| 04/26/2012 | WO2012025799A3 Delivery of particulate material below ground |
| 04/26/2012 | WO2012021474A3 Downhole fracture system and method |
| 04/26/2012 | WO2012018496A3 Downhole displacement based actuator |
| 04/26/2012 | WO2012005830A3 Injection valve with indexing mechanism |
| 04/26/2012 | WO2012001574A3 High solids content methods and slurries |
| 04/26/2012 | WO2011163491A8 Apparatus and method for remote actuation of a downhole assembly |
| 04/26/2012 | US20120097403 Invert Drilling Fluids Having Enhanced Rheology and Methods of Drilling Boreholes |
| 04/26/2012 | US20120097401 Selective hydrate production with co2 and controlled depressurization |
| 04/26/2012 | US20120097398 Multi-Zone Fracturing Completion |
| 04/26/2012 | US20120097397 Fracturing System and Method |
| 04/26/2012 | US20120097396 Bottom hole assembly |
| 04/26/2012 | US20120097392 Treatment Fluids Containing Biodegradable Chelating Agents and Methods for Use Thereof |
| 04/26/2012 | US20120097391 Expandable casing patch |
| 04/26/2012 | US20120097389 Non-ionic alkali polymer solutions for enhanced oil recovery in a subterranean formation |
| 04/26/2012 | US20120097388 System And Method For Detecting Pressure In A Subterranean Environment |
| 04/26/2012 | US20120097383 System and Method for Inductive Signal and Power Transfer from ROV to In Riser Tools |
| 04/26/2012 | DE10196366B4 Verfahren und Vorrichtung zum Schützen von Sprengstoffen Method and apparatus for protecting explosives |
| 04/26/2012 | CA2852311A1 Tools and methods for use in completion of a wellbore |
| 04/26/2012 | CA2815146A1 Excavating deposits from an underground formation layer |
| 04/26/2012 | CA2815111A1 Non-ionic alkali polymer solutions for enhanced oil recovery in a subterranean formation |
| 04/26/2012 | CA2815077A1 Degradable latex and method |
| 04/26/2012 | CA2814750A1 Methods for establishing a subsurface fracture network |
| 04/26/2012 | CA2810098A1 Expandable casing patch |
| 04/26/2012 | CA2721545A1 Downhole flow device with erosion resistant and pressure assisted metal seal |
| 04/25/2012 | EP2443314A2 Method and device for maintaining sub-cooled fluid to esp system |
| 04/25/2012 | EP2443309A1 A method for disposal of drilling waste, contaminated sediments and residual waste and a disposal facility for same |
| 04/25/2012 | EP2286060B1 Rotator for wireline conveyed wellbore instruments and method for rotating an instrument in a wellbore |
| 04/25/2012 | EP2132409B1 Apparatus, system, and method for determining injected fluid vertical placement |
| 04/25/2012 | EP2100002B1 Scale squeeze treatment methods and systems |
| 04/25/2012 | CN202203934U 一种超高压燃烧装置 EHV combustion device |
| 04/25/2012 | CN202203306U 一种抽油机外抱式刹车装置 One kind of foreign holding brake pumping device |
| 04/25/2012 | CN202202857U 逐级座封三封分层压裂管柱 Inside back cover seal seat tiered progressive fracturing string |
| 04/25/2012 | CN202202856U 放射性示踪砂注入装置 Sand of radioactive tracer injection device |
| 04/25/2012 | CN202202855U 油田井用热补偿器 Oil wells with heat compensator |
| 04/25/2012 | CN202202854U 高压磁力耦合式泡沫发生装置 High pressure foam generator magnetic coupling |
| 04/25/2012 | CN202202853U 可提高注入压力的油田用二氧化碳压缩机 Oilfield injection pressure can be increased with carbon dioxide compressor |
| 04/25/2012 | CN202202852U 二氧化碳地面注入系统 Carbon dioxide injection system ground |
| 04/25/2012 | CN202202851U 一种驱油物理模拟实验装置 An oil physical simulation device drive |
| 04/25/2012 | CN202202850U 多介质驱油物理模拟实验装置 Flooding multi-media device physics simulation |