| 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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| 05/11/2011 | CN102052068A Method and device for composite fracturing/perforating for oil/gas well |
| 05/11/2011 | CN102052067A In-depth profile control step by step method employing equipressure drop gradient |
| 05/11/2011 | CN102052066A Dynamic seal pressing method and device for improving complex perforation pressing crack effect |
| 05/11/2011 | CN102052065A Simulation exploiting experiment device for natural gas hydrate |
| 05/11/2011 | CN102052064A Underwater oil storage mat of production platform |
| 05/11/2011 | CN102052063A Long-stroke energy-saving oil pumping unit |
| 05/11/2011 | CN102052062A Energy-saving tower-type oil pumping device |
| 05/11/2011 | CN102051165A Xanthan gum graft copolymer oil displacement agent as well as preparation method and application thereof |
| 05/11/2011 | CN102051161A Thick oil huff and puff deep channel blocking system and injection method thereof |
| 05/11/2011 | CN102049400A Novel online automatic water washing device |
| 05/11/2011 | CN101915084B Process for pumping and exploiting coal bed gas by using ground well drilling and underground hole drilling |
| 05/11/2011 | CN101624981B Double-inlet and single-outlet submersible screw pump oil extraction device |
| 05/11/2011 | CN101270647B Injection allocation volume automatic regulation method for marine oil-field water injection well |
| 05/11/2011 | CN101265796B Same well dual-pumping system |
| 05/11/2011 | CN101165313B Beam-pumping unit |
| 05/11/2011 | CN101113671B Underground catalytic gasification process of coal |
| 05/11/2011 | CN101113666B Coal bed gas mining technology |
| 05/11/2011 | CN101025080B Method for realizing high-water containing same-well injection-production by multi-cup equi-flow type down-hole oil-water separator |
| 05/11/2011 | CA2732804A1 Wellbore tool for fracturing hydrocarbon formations, and method for fracturing hydrocarbon formations using said tool |
| 05/10/2011 | US7939474 Wellbore fluids containing additives for removing a filter cake and methods of using the same |
| 05/10/2011 | US7939471 Comprising an aqueous base fluid, a non-aqueous tackifying agent, and a viscoelastic surfactant; enhanced rheological properties as compared to viscoelastic surfactant fluids or gels known in the art, especially at higher temperatures |
| 05/10/2011 | US7939469 Use of CMC in drilling fluids |
| 05/10/2011 | US7938188 Completion method with telescoping perforation and fracturing tool |
| 05/10/2011 | US7938187 Dual functional components and associated methods |
| 05/10/2011 | US7938185 Fracture stimulation of layered reservoirs |
| 05/10/2011 | US7938184 Wellbore method and apparatus for completion, production and injection |
| 05/10/2011 | US7938183 Method for enhancing heavy hydrocarbon recovery |
| 05/10/2011 | US7938182 Method for recovery of natural gas from a group of subterranean zones |
| 05/10/2011 | US7938175 Drilling, perforating and formation analysis |
| 05/10/2011 | CA2630449C Methods of stabilizing unconsolidated subterranean formations |
| 05/10/2011 | CA2623581C Heavy oil drilling and recovery |
| 05/10/2011 | CA2497948C Method and stimulating oil and gas wells using deformable proppants |
| 05/10/2011 | CA2489516C Reinforced tubular threaded joint for improved sealing after plastic expansion |
| 05/10/2011 | CA2438288C Methods and compositions for consolidating proppant in subterranean fractures |
| 05/10/2011 | CA2428715C Latch profile installation in existing casing |
| 05/05/2011 | WO2011053752A1 Water injection systems and methods |
| 05/05/2011 | WO2011053585A2 Method of mitigating corrosion rate of oilfield tubular goods |
| 05/05/2011 | WO2011053267A1 Method for extracting crude oil |
| 05/05/2011 | WO2011051850A2 Downhole chemical delivery system and method |
| 05/05/2011 | WO2011051666A1 Fluid treatment apparatus and method |
| 05/05/2011 | WO2011051453A2 Subsea pumping system |
| 05/05/2011 | WO2011050509A1 Adjusting and controlling method for microbial enhanced oil recovery |
| 05/05/2011 | WO2011050508A1 Microbial enhanced oil recovery method in low permeability reservoir |
| 05/05/2011 | WO2011050477A1 Plug retainer and method for wellbore fluid treatment |
| 05/05/2011 | WO2011050465A1 Breakers for gelled fracturing fluids |
| 05/05/2011 | WO2011050445A1 Water flooding method for secondary hydrocarbon recovery |
| 05/05/2011 | WO2011016997A3 Electrical penetrator assembly |
| 05/05/2011 | WO2011010113A3 Method for inducing fracture complexity in hydraulically fractured horizontal well completions |
| 05/05/2011 | WO2011008998A3 Method and apparatus for a downhole gas generator |
| 05/05/2011 | WO2011008391A3 Lift wash-through facility |
| 05/05/2011 | WO2011007172A3 Process |
| 05/05/2011 | WO2011005108A3 A down well tool with rolling means |
| 05/05/2011 | WO2010150010A3 Apparatus and methods for forming and using subterranean salt cavern |
| 05/05/2011 | WO2010145676A8 Method of creating a carbon dioxide hydrate |
| 05/05/2011 | WO2010141256A4 Multiple zone isolation method |
| 05/05/2011 | WO2010141196A4 Permeability flow balancing within integral screen joints |
| 05/05/2011 | WO2010136773A3 Well monitoring by means of distributed sensing means |
| 05/05/2011 | WO2010084369A9 Method for extracting viscous petroleum crude from a reservoir |
| 05/05/2011 | WO2010025150A3 Sand control screen assembly and method for use of same |
| 05/05/2011 | WO2009114508A3 Data gathering, transmission, integration and interpretation during coiled tubing well testing operations |
| 05/05/2011 | US20110100642 Instrumented tubing and method for determining a contribution to fluid production |
| 05/05/2011 | US20110100634 Downhole chemical delivery system and method |
| 05/05/2011 | US20110100633 Gelled hydrocarbons for oilfield processes, phosphate ester compounds useful in gellation of hydrocarbons and methods for production and use thereof |
| 05/05/2011 | US20110100632 Method for monitoring flood front movement during flooding of subsurface formations |
| 05/05/2011 | US20110100631 Flooding fluid and enhancing oil recovery method |
| 05/05/2011 | US20110100630 Method of Mitigating Corrosion Rate of Oilfield Tubular Goods |
| 05/05/2011 | US20110100629 Methods of Using Hydrocarbon Gelling Agents as Self-Diverting Scale Inhibitors |
| 05/05/2011 | US20110100628 Methods of delaying the curing of moisture sensitive curable elastomers |
| 05/05/2011 | US20110100627 System and Method for Dynamically Adjusting the Center of Gravity of a Perforating Apparatus |
| 05/05/2011 | US20110100624 Cyclonic strainer |
| 05/05/2011 | US20110100623 High efficiency fluid pumping apparatus and method |
| 05/05/2011 | US20110100622 Top Drive Systems for Wellbore & Drilling Operations |
| 05/05/2011 | CA2779407A1 Downhole chemical delivery system and method |
| 05/05/2011 | CA2778721A1 Method of mitigating corrosion rate of oilfield tubular goods |
| 05/05/2011 | CA2776564A1 Plug retainer and method for wellbore fluid treatment |
| 05/04/2011 | EP2316152A1 High pressure, high temperature standoff for electrical connector in a underground well |
| 05/04/2011 | EP2315912A2 Producing gaseous hydrocarbons from hydrate capped reservoirs |
| 05/04/2011 | EP2315911A2 Maintaining shale stability by pore plugging |
| 05/04/2011 | EP2315910A2 Installation for the in situ extraction of a substance containing carbon |
| 05/04/2011 | EP2315909A2 System and method for sub-cooling hydrocarbon production fluid for transport |
| 05/04/2011 | EP2315905A1 Device for mounting a flexible line on structure, and related equipment and method |
| 05/04/2011 | CN201821187U Limiting device for bracket of oil pumping unit motor |
| 05/04/2011 | CN201818613U Beam pin of beam pumping unit |
| 05/04/2011 | CN201818294U Gas-liquid separator with internal anti-wax, anti-scaling and anti-corrosion device |
| 05/04/2011 | CN201818293U CBM multi-branched horizontal well system and cleanup well thereof |
| 05/04/2011 | CN201818292U Foam generator for displacement experiment |
| 05/04/2011 | CN201818291U Gas nipple of natural gas well |
| 05/04/2011 | CN201818290U Anti-friction anti-drag universal shaft |
| 05/04/2011 | CN201818289U Novel filtering member for sand-prevention screen tube |
| 05/04/2011 | CN201818288U Combined oil pumping unit for plurality of oil wells |
| 05/04/2011 | CN201818287U Pulley reversing mechanism for purely mechanical reversing oil pumping unit |
| 05/04/2011 | CN201818286U Energy-saving electromechanical integration intelligent oil extractor |
| 05/04/2011 | CN201818285U Double-pulley external-rotor motor pumping unit with movable pulleys |
| 05/04/2011 | CN201818284U Special intelligent motive power device of oil pumping unit |
| 05/04/2011 | CN102046919A Methods of treating a hydrocarbon containing formation |
| 05/04/2011 | CN102046918A Methods for generation of subsurface heat for treatment of a hydrocarbon containing formation |
| 05/04/2011 | CN102046917A Systems and methods for producing oil and/or gas |
| 05/04/2011 | CN102046916A Methods of treating a hydrocarbon containing formation |
| 05/04/2011 | CN102046915A Method for treating a hydrocarbon containing formation |
| 05/04/2011 | CN102045023A Novel multifunction energy-saving frequency conversion control device for oil pumping machine in oil field |