| 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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| 08/14/2013 | EP2625377A2 Methods for completing multi-zone production wells using sliding sleeve valve assembly |
| 08/14/2013 | EP2625244A1 Enzyme breakers and methods for fluid systems |
| 08/14/2013 | CN203131007U Inert gas gear shifting speed regulating system for underground coal mine fracturing pump set |
| 08/14/2013 | CN203130903U Novel pumping unit balance weight |
| 08/14/2013 | CN203130069U Oilfield flooding efficiency testing system |
| 08/14/2013 | CN203130065U Single well continuous metering device |
| 08/14/2013 | CN203130062U Safe emptying recycling device |
| 08/14/2013 | CN203130061U Device for stimulating test of improving coal bed methane recovery efficiency by feeding carbon dioxide |
| 08/14/2013 | CN203130060U High-power ultrasonic oil taking device |
| 08/14/2013 | CN203130059U Wellhead polymer medicating and dispersing device |
| 08/14/2013 | CN203130058U Concentric integrated water distributor |
| 08/14/2013 | CN203130057U Novel oil extraction pipe column |
| 08/14/2013 | CN203130056U Micro-dispersion water control air driving fluidity device |
| 08/14/2013 | CN203130055U Pressure differential detonating device for perforating operation of oil and gas wells |
| 08/14/2013 | CN203130054U Double-effect detonating device for detonating perforating guns |
| 08/14/2013 | CN203130053U Ocean platform oil pumping unit |
| 08/14/2013 | CN203130052U Pumping unit |
| 08/14/2013 | CN203130051U Square-strip-wound spiral packing for pumping unit |
| 08/14/2013 | CN203130050U Pendulum type twin-well combined oil-pumping unit |
| 08/14/2013 | CN203130049U Lower deviating balancing device of beam-pumping unit auxiliary four-bar variable arm |
| 08/14/2013 | CN203130048U Oil pumping unit feedback generating set |
| 08/14/2013 | CN203130047U Bottom moving tower type pumping unit |
| 08/14/2013 | CN203130046U Agent adding device for oil well |
| 08/14/2013 | CN203130039U Switch tool for switch type sliding sleeve |
| 08/14/2013 | CN203130027U Safety protection and dust catching device for drilling construction |
| 08/14/2013 | CN203123854U Polymer swollen particle dissolution accelerating device with cleaning groove and water seepage structures |
| 08/14/2013 | CN203123852U Bipolar polymer swollen particle dissolution accelerating device with cleaner |
| 08/14/2013 | CN203123846U Extension-spring-bearing puffing device capable of accelerating polymer dissolution |
| 08/14/2013 | CN1942550B Viscoelastic acid |
| 08/14/2013 | CN103249909A Method to enhance fiber bridging |
| 08/14/2013 | CN103249908A Downhole method and apparatus |
| 08/14/2013 | CN103249905A Method and system for radially expanding a tubular element |
| 08/14/2013 | CN103244620A Mechanical reversing speed reducer and vertical type pumping unit |
| 08/14/2013 | CN103244178A Method for controlling diffusion and migration of underground gasification residual pollutants |
| 08/14/2013 | CN103244098A Layering flow tester of low-injection-quantity water injection well |
| 08/14/2013 | CN103244097A Multi-crack fracturing control method for medium-depth coal beds |
| 08/14/2013 | CN103244096A Device and method for closed pulse loading fracture relaxation crustal stress of gas layer |
| 08/14/2013 | CN103244095A Supercritical carbon dioxide fracturing method and supercritical carbon dioxide fracturing system |
| 08/14/2013 | CN103244094A Carbonate rock multi-slug injection type fracturing method |
| 08/14/2013 | CN103244093A Method for generating combustion resonance steam from emulsified crude oil for heating oil wells |
| 08/14/2013 | CN103244092A Method for exploiting heavy oil reservoir by strengthening in-situ oil combustion |
| 08/14/2013 | CN103244091A Reverse steam injection device |
| 08/14/2013 | CN103244090A Steam heating device and steam heating method for thickened oil layer |
| 08/14/2013 | CN103244089A Method for exploiting heavy oil by means of microwave assisted solvent extraction |
| 08/14/2013 | CN103244088A Equal dryness distributor and equal dryness distribution method |
| 08/14/2013 | CN103244087A Profile control and water plugging well selection decision-making method for low-permeability reservoirs |
| 08/14/2013 | CN103244086A Deep heavy oil reservoir in-situ regeneration foam oil exploiting method |
| 08/14/2013 | CN103244085A Oil displacement method for electrophoresis oil layers |
| 08/14/2013 | CN103244084A Layered exploitation control method for petroleum and magnetic control bottom-hole regulator |
| 08/14/2013 | CN103244083A Foam-assisted hydraulic sandblasting perforating technique pipe string and method |
| 08/14/2013 | CN103244082A Flexible first-time sand control sandblasting technique pipe |
| 08/14/2013 | CN103244081A Gravel pack filling monitoring system and monitoring method based on magnetic media |
| 08/14/2013 | CN103244080A Ultra-deep water-float-type ocean oil and gas development system |
| 08/14/2013 | CN103244079A Five-rod following intelligent variable parameter walking-beam pumping unit |
| 08/14/2013 | CN103244078A Numerical-control system device of beam-pumping unit |
| 08/14/2013 | CN103244077A Crude oil dissolved gas underground collecting apparatus |
| 08/14/2013 | CN103242923A Natural gas desulfurization device and desulfurization process applicable to production platform |
| 08/14/2013 | CN102482568B Methods for treating carbonate hydrocarbon-bearing formations with fluorinated amphoteric compounds |
| 08/14/2013 | CN102373039B Oil displacement method suitable for seawater base |
| 08/14/2013 | CN102051165B Xanthan gum graft copolymer oil displacement agent as well as preparation method and application thereof |
| 08/14/2013 | CN102022104B Open-hole packer for open-hole horizontal well and preset connector fracturing well completion method |
| 08/14/2013 | CN101939504B Optimization of untreated oil shale geometry to control subsidence |
| 08/14/2013 | CN101775973B High-strength compound sand-prevention screen pipe and manufacture method thereof |
| 08/14/2013 | CN101555788B Double-detection probe measuring and adjusting instrument and detection method thereof |
| 08/13/2013 | US8510089 Computer-implemented systems and methods for forecasting performance of polymer flooding of an oil reservoir system |
| 08/13/2013 | US8507412 Methods for using non-volatile phosphorus hydrocarbon gelling agents |
| 08/13/2013 | US8506920 Method for creating diamond dust via detonation of carbon dioxide and reducing agent combinations |
| 08/13/2013 | US8506680 Reclamation of gaseous substances from boiler flue gas for oil recovery |
| 08/13/2013 | US8506467 Process for solidifying organic and inorganic provisional constituents contained in produced water from heavy oil operations |
| 08/13/2013 | US8505747 Cyclonic debris evacuation apparatus and method for a pump |
| 08/13/2013 | US8505628 High solids content slurries, systems and methods |
| 08/13/2013 | US8505627 Downhole separation and reinjection |
| 08/13/2013 | US8505626 α-Amino acid phosphonic acid compounds, method of preparation of use thereof |
| 08/13/2013 | US8505621 Well assembly with recesses facilitating branch wellbore creation |
| 08/13/2013 | US8505620 Method and system for accessing subterranean deposits from the surface and tools therefor |
| 08/13/2013 | CA2799278A1 Desanding apparatus and system |
| 08/13/2013 | CA2778713A1 Device and method for use in controlling fluid flow |
| 08/13/2013 | CA2751528C Method for diversion of hydraulic fracture treatments |
| 08/13/2013 | CA2620481C Debris protection for sliding sleeve |
| 08/13/2013 | CA2586369C Method and apparatus for perforating a casing and producing hydrocarbons |
| 08/13/2013 | CA2583291C Improved hanging apparatus and method |
| 08/13/2013 | CA2550443C Integrated sequencing of extraction and treatment processes for extra-heavy or bituminous crude oil |
| 08/10/2013 | CA2805161A1 Method of treating flowback fluid |
| 08/09/2013 | CA2807992A1 Treatment of subterranean formations |
| 08/08/2013 | WO2013116875A1 Earth metal peroxide fluidized compositions |
| 08/08/2013 | WO2013116470A1 Cellulose nanowhiskers in well services |
| 08/08/2013 | WO2013116227A1 Nanohybrid phase interfaces for foaming in oil field applications |
| 08/08/2013 | WO2013116198A1 Nanohybrid phase interfaces for altering wettability in oil field applications |
| 08/08/2013 | WO2013116166A2 Hydrocarbon resource heating apparatus including upper and lower wellbore rf radiators and related methods |
| 08/08/2013 | WO2013116094A2 Limited depth abrasive jet cutter |
| 08/08/2013 | WO2013115824A1 Chemical injection regulation mechanism |
| 08/08/2013 | WO2013113126A1 Microbial enhanced treatment of carbonate reservoirs for in situ hydrocarbon recovery |
| 08/08/2013 | WO2013084170A3 Improvements on foldable sandwich tubular structure |
| 08/08/2013 | WO2013058859A3 Explosive pellet |
| 08/08/2013 | WO2013016051A3 Water self-shutoff tubular |
| 08/08/2013 | WO2012097773A3 Modular anti-torque mechanism |
| 08/08/2013 | US20130200681 Liquid collection process with secondary channels for in-situ leaching an ore body to extract rare earth elements |
| 08/08/2013 | US20130199843 Interruptor sub, perforating gun having the same, and method of blocking ballistic transfer |
| 08/08/2013 | US20130199794 Gas Lift System Having Expandable Velocity String |
| 08/08/2013 | US20130199792 Subsea collection and containment system for hydrocarbon emissions |