| 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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| 01/18/2012 | CN102322252A Coalbed methane multi-lateral horizontal well system and construction method thereof |
| 01/18/2012 | CN102322251A Continuous mixing truck with online viscosity detecting device |
| 01/18/2012 | CN102322250A Gas injection aided electric heating oil shale in-situ exploitation simulating device and system |
| 01/18/2012 | CN102322249A Method for improving oil reservoir recovery efficiency of interlayer developed deep-layer heavy oil |
| 01/18/2012 | CN102322248A Injection production process of fluids produced by supercritical water oxidation |
| 01/18/2012 | CN102322247A Device and method for evaluating displacement capability of wetting phase of rock at high temperature under high pressure |
| 01/18/2012 | CN102322246A Sand control pipe for oil-sand separation in oil and gas exploitation |
| 01/18/2012 | CN102322245A Gas hydrate exploitation device |
| 01/18/2012 | CN102322244A Oil pumping machine |
| 01/18/2012 | CN102322243A Oil extraction method by regulating and controlling interface of oil and water |
| 01/18/2012 | CN102322223A Geothermal heat superconducting heat-transferring wax eliminating and preventing sucker rod |
| 01/18/2012 | CN102320857A Preparation method of artificial sand for sand prevention of oil-producing well and application thereof |
| 01/18/2012 | CN102116140B Construction method for enhancing extraction effect of ground coal bed gas |
| 01/18/2012 | CN101435321B Horizontal well tube exterior subsection gravel filling sand prevention process and pipe column |
| 01/17/2012 | US8097566 Methods of fracturing subterranean formations using sulfonated gelling agent polymers |
| 01/17/2012 | US8096364 Umbilical deployment system |
| 01/17/2012 | US8096362 Phase-controlled well flow control and associated methods |
| 01/17/2012 | US8096361 Stimulated oil production using reactive fluids |
| 01/17/2012 | US8096360 Alkaline β-mannanase containing compositions useful for the hydrolysis of guar in high pH environments and methods related thereto |
| 01/17/2012 | US8096358 Method of perforating for effective sand plug placement in horizontal wells |
| 01/17/2012 | US8096356 System and method for preventing buckling during a gravel packing operation |
| 01/17/2012 | US8096351 Water sensing adaptable in-flow control device and method of use |
| 01/17/2012 | US8096349 Apparatus for extraction of hydrocarbon fuels or contaminants using electrical energy and critical fluids |
| 01/17/2012 | CA2676296C Methods for reducing the viscosity of treatment fluids comprising diutan |
| 01/17/2012 | CA2669776C Downhole tool operated by shape memory material springs |
| 01/17/2012 | CA2563580C Expandable tubular connection |
| 01/17/2012 | CA2547027C Production by plastic expansion of a sealed tubular joint with inclined abutting surface(s) |
| 01/17/2012 | CA2528467C Magnetic separation in fluids |
| 01/16/2012 | CA2710044A1 Downhole combustion unit and process for tecf injection into carbonaceous permeable zones |
| 01/12/2012 | WO2012006489A2 A method for treatment of subterranean sites adjacent to water injection wells |
| 01/12/2012 | WO2012006486A2 A method for treatment of subterranean sites adjacent to water injection wells |
| 01/12/2012 | WO2012006483A2 A method for pre-treatment of subterranean sites adjacent to water injection wells |
| 01/12/2012 | WO2012006258A2 Oilfield application of solar energy collection |
| 01/12/2012 | WO2012006110A1 Systems and methods for killing a well |
| 01/12/2012 | WO2012005926A2 Drill string/annulus sealing with swellable materials |
| 01/12/2012 | WO2012005889A1 Downhole oil-water-solids separation |
| 01/12/2012 | WO2012005874A2 Mitigating leaks in production tubulars |
| 01/12/2012 | WO2012005830A2 Injection valve with indexing mechanism |
| 01/12/2012 | WO2012004601A2 Underwater oil and gas collection system |
| 01/12/2012 | WO2012004474A1 Optimized chemical assisted recovery method |
| 01/12/2012 | WO2012004235A2 Method for preventing the escape of environmentally harmful substances in underwater drilling operations and pipe string therefor |
| 01/12/2012 | WO2011149633A3 Methods and systems for treating subterranean wells |
| 01/12/2012 | WO2011143276A3 Undersea leak remediation device and method |
| 01/12/2012 | WO2011142912A3 Nano-sized particle-coated proppants for formation fines fixation in proppant packs |
| 01/12/2012 | WO2011137460A3 Machines, systems, computer-implemented methods, and computer program products to test and certify oil and gas equipment |
| 01/12/2012 | WO2011130168A3 System and method for controlling flow through a sand screen |
| 01/12/2012 | WO2011107794A3 Fuel cells |
| 01/12/2012 | WO2011096786A4 Oil-drilling simulation device |
| 01/12/2012 | WO2011089151A9 Method for producing methane gas |
| 01/12/2012 | US20120006757 Separating sand from fluids produced by a well |
| 01/12/2012 | US20120006560 Forming A Model Of A Subsurface Region |
| 01/12/2012 | US20120006559 Submergible oil well sealing device with valves and method for installing a submergible oil well sealing device and resuming oil production |
| 01/12/2012 | US20120006556 System and method of providing high pressure fluid injection with metering using low pressure supply lines |
| 01/12/2012 | US20120006552 Method for pre-treatment of subterranean sites adjacent to water injection wells |
| 01/12/2012 | US20120006551 Compositions and Methods of Treating High Temperature Subterranean Formations |
| 01/12/2012 | US20120006550 Split Stream Oilfield Pumping Systems |
| 01/12/2012 | US20120006549 Well servicing fluid |
| 01/12/2012 | US20120006548 Perforating and Jet Drilling Method and Apparatus |
| 01/12/2012 | US20120006544 Apparatus and Method for Depositing a Slurry in a Well |
| 01/12/2012 | US20120006543 Downhole oil-water-solids separation |
| 01/12/2012 | US20120006542 Method for pre-treatment of subterranean sites adjacent to water injection wells |
| 01/12/2012 | US20120006541 Method for pre-treatment of subterranean sites adjacent to water injection wells |
| 01/12/2012 | US20120006540 Method for pre-treatment of subterranean sites adjacent to water injection wells |
| 01/12/2012 | US20120006539 Method for pre-treatment of subterranean sites adjacent to water injection wells |
| 01/12/2012 | US20120006538 Method for pre-treatment of subterranean sites adjacent to water injection wells |
| 01/12/2012 | US20120006537 Method for pre-treatment of subterranean sites adjacent to water injection wells |
| 01/12/2012 | US20120006536 Method for pre-treatment of subterranean sites adjacent to water injection wells |
| 01/12/2012 | US20120006535 Method for pre-treatment of subterranean sites adjacent to water injection wells |
| 01/12/2012 | US20120006534 Method for pre-treatment of subterranean sites adjacent to water injection wells |
| 01/12/2012 | US20120006217 Electronic blast control system for multiple downhole operations |
| 01/12/2012 | CA2804607A1 A method for treatment of subterranean sites adjacent to water injection wells |
| 01/12/2012 | CA2804248A1 Underwater oil and gas collection system |
| 01/12/2012 | CA2803450A1 Mitigating leaks in production tubulars |
| 01/12/2012 | CA2802156A1 Optimized chemical assisted recovery method |
| 01/11/2012 | EP2405097A2 Machine for installing and uninstalling pumps in wells |
| 01/11/2012 | EP2404030A2 Wellbore strengthening material recovery |
| 01/11/2012 | EP2404029A2 In situ loop antenna arrays for subsurface hydrocarbon heating |
| 01/11/2012 | EP2078185B1 Method and apparatus for measuring in-situ stress of rock using thermal crack |
| 01/11/2012 | EP1825101B1 Electroacoustic method and device for stimulation of mass transfer processes for enhanced well recovery |
| 01/11/2012 | EP1381921B1 Field/reservoir optimization utilizing neural networks |
| 01/11/2012 | CN202108711U Proportion adjustment pump of ternary injection and polymer injection for oil field |
| 01/11/2012 | CN202108499U System for measuring oil by mass method |
| 01/11/2012 | CN202108494U Rotational gas-liquid separating device with pore plates |
| 01/11/2012 | CN202108493U Water jetting multi-cluster subsection fracturing strings of horizontal well |
| 01/11/2012 | CN202108492U Technology pipe string integrating fracture and pumpless oil production |
| 01/11/2012 | CN202108491U Gas well separate stratum fracturing and separate stratum testing integrated process pipe column |
| 01/11/2012 | CN202108490U Identical dryness distributor of wet steam and like |
| 01/11/2012 | CN202108489U Heat-tracing system for thermal oil-extracting wellhead device |
| 01/11/2012 | CN202108488U Hydraulic plunger wellhead close, quantitative and continuous dosing device |
| 01/11/2012 | CN202108487U Well mouth agent feeding device for high-pressure source-free mining-injecting gas well |
| 01/11/2012 | CN202108486U Two-stage three-section inserting, sealing and dispersing tubular column capable of backwashing well |
| 01/11/2012 | CN202108485U Two-stage two-section separation-injection tubing string for backwashing well with inserting sealing device and sleeve prefabricating sealing cylinder |
| 01/11/2012 | CN202108484U Three-stage four-section inserting, sealing and dispersing tubular column capable of backwashing well |
| 01/11/2012 | CN202108483U Sector-shaped surrounding flow shaft water injection well choke |
| 01/11/2012 | CN202108482U Oil well multifunctional negative pressure multi-layer bottom hole regulator |
| 01/11/2012 | CN202108481U Circulative sieve tube hanger |
| 01/11/2012 | CN202108480U Constant pressure gas discharge wellhead device of oil well sleeve |
| 01/11/2012 | CN202108479U Reciprocating electric pump device for liquid collection in oil, gas and coal well |
| 01/11/2012 | CN202108478U Screw type device for moving oil-pumping equipment |
| 01/11/2012 | CN202108477U Plunger water pumping gas production well mouth buffer |