| 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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| 04/17/2013 | CN103046903A Anti-eccentric-wear oil pumping system with dual channels |
| 04/17/2013 | CN103046895A Method for filling refracturing plugging agent into single rock core |
| 04/17/2013 | CN103046894A Injection process of refracturing plugging agent |
| 04/17/2013 | CN103045221A Surfactant flooding system and application thereof |
| 04/17/2013 | CN102251760B Loose bed and bedrock layer mixed water-intaking and well-forming process for geothermal well |
| 04/17/2013 | CN102080524B Layered electric ignition method for multilayer gas injection of fire flood |
| 04/17/2013 | CN102031955B Ultrasonic-assisted reservoir stratum chemical blockage removal experimental facility and experimental method |
| 04/17/2013 | CN101915080B solid oxide fuel cell-gas turbine hybrid generation method for mining gas hydrate and device thereof |
| 04/17/2013 | CN101906958B Unattended digital multi-well automatic metering device and method |
| 04/17/2013 | CN101881150B Hydraulic cutting nozzle with residue filer device |
| 04/17/2013 | CN101555784B Clean natural gas exploiting method |
| 04/17/2013 | CN101377126B Corrugation-shaped sedimentation cup and multiple-cup equal flow type gas anchor |
| 04/17/2013 | CN101173603B Sub-surface coalbed methane well enhancement through rapid oxidation |
| 04/16/2013 | US8420578 Light aggregate of natural mineral and ceramic binding material in form of proppant granule; for enhancement of the oil and gas production when using hydraulic fracturing techniques |
| 04/16/2013 | US8420576 Hydrophobically and cationically modified relative permeability modifiers and associated methods |
| 04/16/2013 | US8418770 Multi-process electronic control valve system |
| 04/16/2013 | US8418768 Bypass gaslift system, apparatus, and method for producing a multiple zones well |
| 04/16/2013 | US8418767 Blowout preventer with a Bernoulli effect suck-down valve |
| 04/16/2013 | US8418764 Methods useful for controlling fluid loss in subterranean formations |
| 04/16/2013 | US8418762 Method of using gelled fluids with defined specific gravity |
| 04/16/2013 | US8418761 Stimuli-responsive high viscosity pill |
| 04/16/2013 | US8418759 Fluorinated polymer compositions and methods for treating hydrocarbon-bearing formations using the same |
| 04/16/2013 | US8418755 Well treatment device, method, and system |
| 04/16/2013 | US8418754 Emergency water pump system |
| 04/16/2013 | CA2713619C A completion method for horizontal wells in in situ combustion |
| 04/16/2013 | CA2704896C Well completion for viscous oil recovery |
| 04/16/2013 | CA2688508C Triangle air injection and ignition extraction method and system |
| 04/16/2013 | CA2645267C Solvent for extracting bitumen from oil sands |
| 04/16/2013 | CA2626861C Method and apparatus for isolating a wellhead for fracturing |
| 04/16/2013 | CA2538753C Method and composition for recovering hydrocarbon fluids from a subterranean reservoir |
| 04/14/2013 | CA2756167A1 System for delivering frac water at high pressure |
| 04/11/2013 | WO2013052847A1 Method for detecting and mitigating drilling inefficiencies |
| 04/11/2013 | WO2013052725A1 Systems and methods for subsurface oil recovery optimization |
| 04/11/2013 | WO2013052658A1 System and method of perforating a well and preparing a perforating fluid for the same |
| 04/11/2013 | WO2013052573A1 Apparatus and methods utilizing nonexplosive energetic materials for downhole applications |
| 04/11/2013 | WO2013052566A1 Using dielectric properties of an insulated conductor in a subsurface formation to assess properties of the insulated conductor |
| 04/11/2013 | WO2013052561A2 Thermal expansion accommodation for circulated fluid systems used to heat subsurface formations |
| 04/11/2013 | WO2013052402A1 Screen assembly and methods of use |
| 04/11/2013 | WO2013052359A1 Method and foam composition for recovering hydrocarbons from a subterranean reservoir |
| 04/11/2013 | WO2013052291A1 Self-diverting high-rate water packs |
| 04/11/2013 | WO2013052285A1 Reinforcing amorphous pla with solid particles for downhole applications |
| 04/11/2013 | WO2013052225A1 Cutting assembly and method of cutting coiled tubing |
| 04/11/2013 | WO2013052093A1 Method and apparatus to increase recovery of hydrocarbons |
| 04/11/2013 | WO2013052064A1 Re-latch mechanism for wellbore liner system |
| 04/11/2013 | WO2013052033A1 Methods of preventing premature fracturing of a subterrranean formation using a sheath |
| 04/11/2013 | WO2013051958A1 Method for reviving the working condition of a well and technical complex for the implementation of same |
| 04/11/2013 | WO2013051937A1 Swellable elastomeric polymer materials |
| 04/11/2013 | WO2013050989A1 Testing while fracturing while drilling |
| 04/11/2013 | WO2013050075A1 Method and apparatus for generating steam for the recovery of hydrocarbon |
| 04/11/2013 | WO2013022637A3 Permeable material compacting method and apparatus |
| 04/11/2013 | WO2013022636A3 Permeable material compacting method and apparatus |
| 04/11/2013 | WO2013012888A3 Pulsed neutron monitoring of hydraulic fracturing and acid treatment |
| 04/11/2013 | WO2013009694A3 Downhole polymer foam applications |
| 04/11/2013 | WO2013003044A3 Multi-layered perforating gun using expandable tubulars |
| 04/11/2013 | WO2012154971A3 System and method to measure hydrocarbons produced from a well |
| 04/11/2013 | WO2012146234A3 Reverse rotation protection for borehole pumps |
| 04/11/2013 | WO2012092914A3 Dual rotational and axial load pick-up element |
| 04/11/2013 | US20130087345 Re-latch mechanism for wellbore liner system |
| 04/11/2013 | US20130087343 Dual Flow Gas Lift Valve |
| 04/11/2013 | US20130087342 Riser system and method of use |
| 04/11/2013 | US20130087340 Chemomechanical treatment fluids and methods of use |
| 04/11/2013 | US20130087339 Method to reduce ghg emissions of fuel production |
| 04/11/2013 | US20130087338 Wellbore operations using controlled variable density fluid |
| 04/11/2013 | US20130087337 Thermal expansion accommodation for circulated fluid systems used to heat subsurface formations |
| 04/11/2013 | US20130087336 System And Method Of Perforating A Well And Preparing A Perforating Fluid For The Same |
| 04/11/2013 | US20130087332 Composite formulations and methods of making and using same |
| 04/11/2013 | US20130087331 Lost-circulation material made from a recycled ceramic |
| 04/11/2013 | US20130087329 Method of tracing flow of hydrocarbon from a subterranean reservoir |
| 04/11/2013 | US20130087328 Downhole Species Selective Optical Fiber Sensor Systems and Methods |
| 04/11/2013 | US20130087324 Re-latch mechanism for wellbore liner system |
| 04/11/2013 | US20130087321 System For Real-Time Monitoring and Transmitting Hydraulic Fracture Seismic Events to Surface Using the Pilot Hole of the Treatment Well as the Monitoring Well |
| 04/11/2013 | US20130087061 Dissolvable material application in perforating |
| 04/11/2013 | CA2852953A1 Systems and methods for subsurface oil recovery optimization |
| 04/11/2013 | CA2851166A1 Method and apparatus for generating steam for the recovery of hydrocarbon |
| 04/11/2013 | CA2850782A1 Systems and methods for subsurface oil recovery optimization |
| 04/11/2013 | CA2850756A1 Using dielectric properties of an insulated conductor in a subsurface formation to assess properties of the insulated conductor |
| 04/11/2013 | CA2850741A1 Thermal expansion accommodation for circulated fluid systems used to heat subsurface formations |
| 04/11/2013 | CA2850616A1 Screen assembly and methods of use |
| 04/11/2013 | CA2849883A1 Reinforcing amorphous pla with solid particles for downhole applications |
| 04/11/2013 | CA2849880A1 Re-latch mechanism for wellbore liner system |
| 04/11/2013 | CA2849088A1 Methods for improving coatings on downhole tools |
| 04/11/2013 | CA2848423A1 Apparatus and methods utilizing nonexplosive energetic materials for downhole applications |
| 04/11/2013 | CA2848184A1 Cutting assembly and method of cutting coiled tubing |
| 04/10/2013 | EP2578796A2 Expandable centralizer for expandable pipe string |
| 04/10/2013 | EP2578793A2 Power transmission system for use with downhole equipment |
| 04/10/2013 | EP2576975A1 Sulfonated internal olefin surfactant for enhanced oil recovery |
| 04/10/2013 | EP2576974A2 Compact cable suspended pumping system for dewatering gas wells |
| 04/10/2013 | EP2576973A2 Compact cable suspended pumping system for lubricator deployment |
| 04/10/2013 | EP2576972A2 Device for forming a protected region within a body of water and method for constructing a device |
| 04/10/2013 | EP2576971A1 Suction device and suction method |
| 04/10/2013 | EP2576763A2 Methods to stimulate biogenic methane production from hydrocarbon-bearing formations |
| 04/10/2013 | EP2576721A2 Surfactant-less alkaline-polymer formulations for recovering reactive crude oil |
| 04/10/2013 | CN202866801U Gas-liquid-ratio regulation device for rock core displacement physical simulation experiment |
| 04/10/2013 | CN202866780U Fracture acidizing tank |
| 04/10/2013 | CN202866779U Step multi-section sliding sleeve type sand jet perforating and fracturing tool |
| 04/10/2013 | CN202866778U Collection and storage control system for drill-over tool storage type logging instrument |
| 04/10/2013 | CN202866777U Anchoring type heat recovery tool |
| 04/10/2013 | CN202866776U Thick oil viscosity reduction simulation device in shaft lifting process |
| 04/10/2013 | CN202866775U Water injection well remote monitoring device |
| 04/10/2013 | CN202866774U Liquid pressure pulsation injector |