| 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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| 02/01/2012 | CN1902376B 在地层增产处理中导致脱砂的方法和砾石充填地层的方法 Lead off the sand and gravel packing methods strata in the formation stimulation method |
| 02/01/2012 | CN102341565A Wellbore strengthening material recovery |
| 02/01/2012 | CN102341564A In situ loop antenna arrays for subsurface hydrocarbon heating |
| 02/01/2012 | CN102341563A Method for monitoring oil-field development |
| 02/01/2012 | CN102341561A Dc powered subsea inverter |
| 02/01/2012 | CN102338831A Electric instrument of petroleum pumping unit |
| 02/01/2012 | CN102337895A Method and device for exploiting sea natural gas hydrate |
| 02/01/2012 | CN102337879A Salt mine drilling solution mining device and method |
| 02/01/2012 | CN102337878A Thermal-ignition high-energy gas pulse fracturing device |
| 02/01/2012 | CN102337877A Mining system for marginal oil field with marine heavy oil and method |
| 02/01/2012 | CN102337876A Thermal mining system of marine heavy oil field and mining method |
| 02/01/2012 | CN102337875A Electromagnetically driving wellhead photoelectric remote sense self-control solid medicinal-solution administration system and method |
| 02/01/2012 | CN102337874A Method for reducing minimum miscible phase pressure between CO2 and crude oil of miscible phase displacement |
| 02/01/2012 | CN102337873A Multi-channel separate injection tubular column of oil tube for polymers |
| 02/01/2012 | CN102337872A One-grade three-section integrated water distribution tubular column of horizontal well |
| 02/01/2012 | CN102337871A Underground adjustable concentric working barrel |
| 02/01/2012 | CN102337870A Composite efficiency-increasing perforation device for secondary explosion |
| 02/01/2012 | CN102337869A Method for sand distribution and prevention of oil well via gravel filling according to particle size level |
| 02/01/2012 | CN102337868A Automatic control system and method for offshore production platform |
| 02/01/2012 | CN102337867A Hydraulic oil pumping system |
| 02/01/2012 | CN102337866A Energy-saving control method and system used for oil sucking machine in oil field |
| 02/01/2012 | CN102337862A Variable-diameter fracturing valve |
| 02/01/2012 | CN102337539A Method for preparing acid-resisting porous metal material |
| 02/01/2012 | CN102337111A Bio-enzyme blockage removal production promoter and application thereof |
| 02/01/2012 | CN101285378B 活性剂复合解堵工艺 Activator complex plugging process |
| 02/01/2012 | CN101100937B 用扩大的洞穴抽取地下地层区域里的液体的方法和系统 Extracted with expanded caves underground formation region where liquid method and system |
| 02/01/2012 | CN101096907B 一种低压下由煤层气生产天然气的方法 A low pressure method for the production of natural gas from coal bed methane |
| 01/31/2012 | US8105986 Aqueous particulate slurry compositions and methods of making same |
| 01/31/2012 | US8104539 Bottom hole assembly for subterranean operations |
| 01/31/2012 | US8104538 Fracturing with telescoping members and sealing the annular space |
| 01/31/2012 | US8104537 Method of developing subsurface freeze zone |
| 01/31/2012 | US8104536 Kerogen extraction from subterranean oil shale resources |
| 01/31/2012 | US8104535 Method of improving waterflood performance using barrier fractures and inflow control devices |
| 01/31/2012 | US8104534 Mechanical seal and lock for tubing conveyed pump system |
| 01/31/2012 | CA2685246C 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 |
| 01/31/2012 | CA2677577C Crosslinked acids comprising derivatized xanthan and subterranean acidizing applications |
| 01/31/2012 | CA2568940C Method for monitoring fluid levels in a tank |
| 01/31/2012 | CA2503516C Method and system for circulating fluid in a well system |
| 01/30/2012 | CA2747117A1 Arrangement for hydrocarbon extraction in wells using progressive cavity pumps |
| 01/30/2012 | CA2746301A1 Subsurface heater |
| 01/26/2012 | WO2012012648A1 Marine well containment system and method |
| 01/26/2012 | WO2012012636A1 Well tool having a nanoparticle reinforced metallic coating |
| 01/26/2012 | WO2012012439A1 Hydraulic fracturing of subterranean formations |
| 01/26/2012 | WO2012012254A1 Non basepipe-welded accessory attachment |
| 01/26/2012 | WO2012012235A1 Oil recovery process for carbonate reservoirs |
| 01/26/2012 | WO2012012126A2 Reservoir simulation of giant subsurface reservoirs with accelerated phase equilibrium determination |
| 01/26/2012 | WO2012012111A1 System and method for producing hydrocarbons from a well |
| 01/26/2012 | WO2012012098A1 Method for in situ fluid assessment and optimization during wellbore displacement operations |
| 01/26/2012 | WO2012012092A2 Apparatus and method for heating of hydrocarbon deposits by axial rf coupler |
| 01/26/2012 | WO2012011995A2 Spark gap isolated, rf safe, primary explosive detonator for downhole applications |
| 01/26/2012 | WO2012011994A1 System and method for stimulating a multi-zone well |
| 01/26/2012 | WO2012010075A1 Swing type double-well oil pumping machine |
| 01/26/2012 | WO2011153466A3 Injection system for enhanced oil recovery |
| 01/26/2012 | US20120018168 Pump |
| 01/26/2012 | US20120018167 Maximizing hydrocarbon production while controlling phase behavior or precipitation of reservoir impairing liquids or solids |
| 01/26/2012 | US20120018165 Marine Well Containment System and Method |
| 01/26/2012 | US20120018162 Proppant |
| 01/26/2012 | US20120018161 Oil Recovery Process for Carbonate Reservoirs |
| 01/26/2012 | US20120018160 New Oil Recovery Process for Carbonate Reservoirs |
| 01/26/2012 | US20120018159 Polymer Hydration Method |
| 01/26/2012 | US20120018157 Ballistic transfer delay device |
| 01/26/2012 | US20120018156 Gas cushion near or around perforating gun to control wellbore pressure transients |
| 01/26/2012 | US20120018153 Systems and Methods For Providing Zonal Isolation In Wells |
| 01/26/2012 | US20120018152 Fluid control in reservior fluid sampling tools |
| 01/26/2012 | US20120018151 Inert gas injection to help control or extinguish coal fires |
| 01/26/2012 | US20120018150 Frequency sweeping tubewave sources for liquid filled boreholes |
| 01/26/2012 | US20120018146 Wear-resistant separating device for removing sand and rock particles |
| 01/26/2012 | US20120018141 Well tool having a nanoparticle reinforced metallic coating |
| 01/26/2012 | US20120018140 Apparatus and method for heating of hydrocarbon deposits by axial rf coupler |
| 01/26/2012 | DE102010032039A1 Method for closing broken or cracked pipeline, involves separating broken or cracked pipe section by flange of pipeline that is lying sealed below breakage |
| 01/26/2012 | CA2806219A1 Well tool having a nanoparticle reinforced metallic coating |
| 01/26/2012 | CA2805703A1 Real-time field friction reduction meter and method of use |
| 01/26/2012 | CA2805276A1 Apparatus and method for heating of hydrocarbon deposits by axial rf coupler |
| 01/26/2012 | CA2804913A1 Bacterial control of water based fluids during subsurface injection and subsequent residence time in the subterranean formation |
| 01/26/2012 | CA2804053A1 Method for in situ fluid assessment and optimization during wellbore displacement operations |
| 01/26/2012 | CA2804007A1 System and method for producing hydrocarbons from a well |
| 01/25/2012 | EP2410124A2 System and method for dynamically adjusting the center of gravity of a perforating apparatus |
| 01/25/2012 | EP2410123A2 System and method for dynamically adjusting the center of gravity of a perforating apparatus |
| 01/25/2012 | EP2410122A2 System and method for dynamically adjusting the center of gravity of a perforating apparatus |
| 01/25/2012 | EP2408999A2 Well treatment fluid |
| 01/25/2012 | EP1861580B1 Pipe separator inlet |
| 01/25/2012 | CN202125718U Lubricating oil recovery device for speed changing box of oil sucking machine |
| 01/25/2012 | CN202125451U Automatic air cooling control system for control cabinet of oil pumping machine |
| 01/25/2012 | CN202125293U Device for separating and metering natural gas well and coal bed gas well pipeline |
| 01/25/2012 | CN202125290U Intelligent sliding sleeve in selective switch sliding sleeve component |
| 01/25/2012 | CN202125289U Sliding sleeve assembly of selective switch |
| 01/25/2012 | CN202125288U Intelligent sliding bush closing tool |
| 01/25/2012 | CN202125287U Anchor fluke type sliding sleeve opening tool |
| 01/25/2012 | CN202125286U Automatic-control non-shearing micro-degradation polymer injection device |
| 01/25/2012 | CN202125285U Injected liquid distribution disperser for polymer flooding |
| 01/25/2012 | CN202125284U Dissolvable temporary plugging water nozzle |
| 01/25/2012 | CN202125283U High-pressure filling type rotary sliding well head |
| 01/25/2012 | CN202125282U Portable mobile liquid distribution device |
| 01/25/2012 | CN202125277U Sliding sleeve switch |
| 01/25/2012 | CN202125275U Drilling-plug-free tool for top cementing of horizontal well sieve tube |
| 01/25/2012 | CN202125272U Small-clamping-distance packer for fine water distribution |
| 01/25/2012 | CN202125256U Heat-insulation oil pipe connection structure welded and fixed at working end of pipe-end inner pipe |
| 01/25/2012 | CN102330549A Double-motor cam type debugging arm of water injection well debugger |
| 01/25/2012 | CN102330547A Micro-fracture explosion propagation device for interlayer explosion laboratory study |
| 01/25/2012 | CN102330546A Open hole staged fracturing well completion pipe string provided with controllable valve and hydraulic control switching pipe string |