| 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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| 08/17/2011 | CN102155201A Lined-cavity charge with consistent punching aperture rule and hole depth |
| 08/17/2011 | CN102155200A Perforator with damping and buffering functions |
| 08/17/2011 | CN102155199A Petroleum underground laser perforation well completion device |
| 08/17/2011 | CN102155198A Gas scavenging device for petroleum underground laser perforator |
| 08/17/2011 | CN102155197A Multi-beam laser perforating device under petroleum well |
| 08/17/2011 | CN102155196A Dynamic laser perforation device capable of penetrating into rock under petroleum well |
| 08/17/2011 | CN102155195A Multi-control-unit multi-beam laser perforation device in oil well |
| 08/17/2011 | CN102155194A Laser perforation device in oil well |
| 08/17/2011 | CN102155193A A well screen |
| 08/17/2011 | CN102155192A Double-well energy-saving oil sucking machine and using method thereof |
| 08/17/2011 | CN102155191A Split twin-well pumping unit |
| 08/17/2011 | CN102155190A Pulley stroke-lengthening beam pumping unit |
| 08/17/2011 | CN102155189A Balancing torque converting device for beam-pumping unit |
| 08/17/2011 | CN102155188A Unbalanced type hydraulic oil pumping machine |
| 08/17/2011 | CN102155187A Method for treating coal bed bottom plate karst water through hydraulic jetting and radial drilling |
| 08/17/2011 | CN102155186A Lever system for pumping unit |
| 08/17/2011 | CN102155185A Gear and long-ring-rack pumping unit capable of tilting forwards, backwards, leftwards and rightwards |
| 08/17/2011 | CN102155170A Riser disconnect and support mechanism |
| 08/17/2011 | CN102153998A Composite flooding system containing lipopeptide biological surfactant and application thereof |
| 08/17/2011 | CN102153994A High-temperature miscible phase temporary plugging and sealing agent and preparation method thereof |
| 08/17/2011 | CN101368477B Oil-water interface inspection and control method |
| 08/17/2011 | CN101100936B Beam type hydraulic energy-saving pumping unit |
| 08/17/2011 | CN101057058B Electroacoustic method and device for stimulation of mass transfer process for enhanced well recovery |
| 08/17/2011 | CA2693640A1 Solvent separation in a solvent-dominated recovery process |
| 08/16/2011 | US7999422 Linear actuator using magnetostrictive power element |
| 08/16/2011 | US7998910 Treatment fluids comprising relative permeability modifiers and methods of use |
| 08/16/2011 | US7998908 Fluid loss control and well cleanup methods |
| 08/16/2011 | US7998907 Porous particulate materials and compositions thereof |
| 08/16/2011 | US7997878 Dense phase powder pump with single ended flow and purge |
| 08/16/2011 | US7997353 Through tubing perforating gun |
| 08/16/2011 | US7997343 Dynamic scale removal tool and method of removing scale using the tool |
| 08/16/2011 | US7997342 Subterranean treatment fluids comprising viscoelastic surfactant gels |
| 08/16/2011 | US7997339 Conveyance device and method of use in gravel pack operations |
| 08/16/2011 | CA2663922C Downhole apparatus and method for expanding a tubing |
| 08/16/2011 | CA2648805C Downhole tool for rock drilling |
| 08/16/2011 | CA2613080C Embedded flex-lock slip liner hanger |
| 08/16/2011 | CA2595018C System and method for producing fluids from a subterranean formation |
| 08/16/2011 | CA2583835C Sub-surface coalbed methane well enhancement through rapid oxidation |
| 08/16/2011 | CA2555170C System and method for optimizing production in a artificially lifted well |
| 08/16/2011 | CA2439095C Integrated bitumen production and gas conversion |
| 08/16/2011 | CA2430796C Systems and methods for controlling flow and access in multilateral completions |
| 08/12/2011 | CA2692939A1 Improvements in hydrocarbon recovery |
| 08/11/2011 | WO2011097341A1 Submersible pump for operation in sandy environments, diffuser assembly, and related methods |
| 08/11/2011 | WO2011097245A1 One trip retrieval of a multi-zone fracturing system |
| 08/11/2011 | WO2011097101A1 Method and apparatus for autonomous downhole fluid selection with pathway dependent resistance system |
| 08/11/2011 | WO2011096968A1 Degradable polymers for hydrocarbon extraction |
| 08/11/2011 | WO2011096964A1 Method for using dynamic target region for well path/drill center optimization |
| 08/11/2011 | WO2011096845A1 Method for enhancing the permeability of the bottom hole region of an oil-bearing formation |
| 08/11/2011 | WO2011095935A2 Methods of use for a positive displacement pump having an externally assisted valve |
| 08/11/2011 | WO2011095547A2 Solvent and gas injection recovery process |
| 08/11/2011 | WO2011095542A2 Solvent injection recovery process |
| 08/11/2011 | WO2011095430A2 Acoustic telemetry system for use in a drilling bha |
| 08/11/2011 | WO2011051850A3 Downhole chemical delivery system and method |
| 08/11/2011 | WO2011049861A3 Integrated enhanced oil recovery process |
| 08/11/2011 | WO2011049858A3 Integrated enhanced oil recovery process |
| 08/11/2011 | WO2011048426A3 Expandable liner tieback connection |
| 08/11/2011 | WO2011048375A3 Bottom hole assembly for subterranean operations |
| 08/11/2011 | WO2010150000A3 Method and apparatus for monitoring fluids |
| 08/11/2011 | US20110194949 Compensating Mechanical Seal For Use With A Downhole Electrical Submersible Pump |
| 08/11/2011 | US20110192609 Retrievable Subsea Bridge Tree Assembly and Method |
| 08/11/2011 | US20110192606 Degradable Polymers for Hydrocarbon Extraction |
| 08/11/2011 | US20110192605 Degradable Polymers for Hydrocarbon Extraction |
| 08/11/2011 | US20110192604 Drilling, completing and stimulating a hydrocarbon production well |
| 08/11/2011 | US20110192603 Self-Sustaining On-Site Production of Electricity and/or Steam for Use in the In Situ Processing of Oil Shale and/or Oil Sands |
| 08/11/2011 | US20110192602 Well Flow Control Systems and Methods |
| 08/11/2011 | US20110192601 Method for drilling and fracture treating multiple wellbores |
| 08/11/2011 | US20110192600 Precision low flow rate fluid delivery system and methods for controlling same |
| 08/11/2011 | US20110192596 Through tubing intelligent completion system and method with connection |
| 08/11/2011 | US20110192595 Method and apparatus for measuring particle size distribution in drilling fluid |
| 08/11/2011 | US20110192591 Method for increasing fluid recovery from multiple lateral wellbores drilled through a subsurface formation |
| 08/11/2011 | CA2788752A1 Acoustic telemetry system for use in a drilling bha |
| 08/11/2011 | CA2788688A1 Submersible pump for operation in sandy environments, diffuser assembly, and related methods |
| 08/11/2011 | CA2788585A1 Flow control device and flow control method |
| 08/11/2011 | CA2787687A1 Methods of use for a positive displacement pump having an externally assisted valve |
| 08/11/2011 | CA2787332A1 Method and apparatus for autonomous downhole fluid selection with pathway dependent resistance system |
| 08/10/2011 | EP2354445A1 Acoustic telemetry system for use in a drilling BHA |
| 08/10/2011 | EP2354444A2 Pumping System and Method for a Downhole Tool |
| 08/10/2011 | EP2354443A2 Wellbore perforation tool |
| 08/10/2011 | EP2354439A2 Gas-blanketed piping connections |
| 08/10/2011 | EP2352901A1 Method and tool for determination of fracture geometry in subterranean formations based on in-situ neutron activation analysis |
| 08/10/2011 | CN201925704U 抽油机皮带防雨罩 Pumping Belt Covers |
| 08/10/2011 | CN201925411U 抽油机自润滑提升链条 Pumping enhance self-lubricating chain |
| 08/10/2011 | CN201924909U 一种煤层气分离装置 One kind of coal-bed methane separation device |
| 08/10/2011 | CN201924908U 孔口锚固器 Orifice anchor |
| 08/10/2011 | CN201924907U 截流分水杆 Shedder bar closure |
| 08/10/2011 | CN201924906U 功能转换杆 Function switching lever |
| 08/10/2011 | CN201924905U Differential pressure open sliding sleeve for horizontal well fracturing |
| 08/10/2011 | CN201924904U 蒸汽驱油模拟实验装置 Steam flooding simulation device |
| 08/10/2011 | CN201924903U 防垢防腐偏心配水器 Scale corrosion eccentric water |
| 08/10/2011 | CN201924902U 密闭无罐多段协调控制注水装置 Multi-coordination sealed non-water tank control device |
| 08/10/2011 | CN201924901U 一种特深穿透射孔弹 One kind of special deep-penetrating shaped charges |
| 08/10/2011 | CN201924900U 高强度复合滤砂管 High-strength composite filter sand tube |
| 08/10/2011 | CN201924899U 一种新型防砂筛管 A new sand control screen |
| 08/10/2011 | CN201924898U 自适应双曲柄柔性传动抽油机 Adaptive double crank flexible drive pumping |
| 08/10/2011 | CN201924897U 卸压煤层气地面抽采井的井身结构 Relief CBM drainage wells in the ground well structure |
| 08/10/2011 | CN201924896U 一种双力辅助刹车器 A dual power assisted brakes |
| 08/10/2011 | CN201924895U 抽油机平衡块滚动式移动装置 Pumping weights rolling mobile devices |
| 08/10/2011 | CN201924894U 抽油机平衡块齿轮式移动装置 Pumping balancer gear mobile devices |
| 08/10/2011 | CN201924893U 抽油机平衡块移动装置 Pumping weights mobile devices |
| 08/10/2011 | CN201924892U 长冲程节能抽油机 Long stroke pumping energy conservation |