| 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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| 07/01/2009 | CN201265399Y Continuous collar type gas and sand anchor |
| 07/01/2009 | CN201265398Y Three-column type compound permanent magnet motor oil pumping machine |
| 07/01/2009 | CN201265397Y Layered extraction-limited down-hole column jacket |
| 07/01/2009 | CN201265396Y Single-crank balance beam type oil pumping machine |
| 07/01/2009 | CN201265395Y Miniature prizing type well head casing tube gas reclamation plant |
| 07/01/2009 | CN101469608A Solar energy and wind energy thermal top-bottom sandwich oil extraction method |
| 07/01/2009 | CN101469607A Water injection technological process using three parameters test curve for layered pulling and running for water injection allocation |
| 07/01/2009 | CN101469606A Chain type oil pump |
| 07/01/2009 | CN100507207C Method and system for producing an oil and gas mixture through a well |
| 06/30/2009 | US7553800 In-situ filter cake degradation compositions and methods of use in subterranean formations |
| 06/30/2009 | US7552776 Anchor hangers |
| 06/30/2009 | US7552772 Locating recess in a shoe for expandable liner system |
| 06/30/2009 | US7552771 Introducing treatment fluid into subterranean formation, fluid comprising an aqueous fluid, relative-permeability modifier in an amount of 0.05-1% by weight of treatment fluid, where relative-permeability modifier comprises water-soluble polymer, and water-drainage-rate enhancing agent |
| 06/30/2009 | US7552770 Heavy wax stimulation diverting agent |
| 06/30/2009 | US7552766 Ribbed sealing element and method of use |
| 06/30/2009 | US7552765 Wellhead blowout preventer with extended ram for sealing central bore |
| 06/30/2009 | CA2646814A1 Oilfield equipment composed of a base material reinforced with a composite material |
| 06/30/2009 | CA2636560A1 Treatment of stimulating fluid |
| 06/30/2009 | CA2563092C Flow switchable check valve |
| 06/30/2009 | CA2547522C Viscoelastic acid |
| 06/30/2009 | CA2344752C Improved method and apparatus for locking charges into a charge holder |
| 06/25/2009 | WO2009079364A2 Electrical submersible pump and gas compressor |
| 06/25/2009 | WO2009079363A2 Submersible pump with surfactant injection |
| 06/25/2009 | WO2009079234A2 Methods of treating subterranean wells using changeable additives |
| 06/25/2009 | WO2009079231A2 Methods of contacting and/or treating a subterranean formation |
| 06/25/2009 | WO2009079060A1 Downhole separation of carbon dioxide from natural gas produced from natural gas reservoirs |
| 06/25/2009 | WO2009078745A1 Proppant flowback control using encapsulated adhesive materials |
| 06/25/2009 | WO2009078744A1 Additive for preventing proppant flowback from hydraulic fractures |
| 06/25/2009 | WO2009077715A2 Stimulation through fracturing while drilling |
| 06/25/2009 | WO2009077714A1 Submersible pump assembly |
| 06/25/2009 | WO2009076763A1 Systems and methods for low emission hydrocarbon recovery |
| 06/25/2009 | WO2009058590A3 Addition of nonionic surfactants to water soluble block copolymers to increase the stability of the copolymer in aqueous solutions containing salt and/or surfactants |
| 06/25/2009 | WO2009047521A3 Pumping module and system |
| 06/25/2009 | WO2009044075A3 Improved process for enhanced oil recovery |
| 06/25/2009 | WO2009038777A4 Heavy oil recovery with fluid water and carbon dioxide |
| 06/25/2009 | US20090159528 Flow Divider and Separation System |
| 06/25/2009 | US20090159296 Coupler retained liner hanger mechanism and methods of setting a hanger inside a wellbore |
| 06/25/2009 | US20090159293 Isolating tubing |
| 06/25/2009 | US20090159291 Telescopic joint mini control panel |
| 06/25/2009 | US20090159288 Chemically enhanced thermal recovery of heavy oil |
| 06/25/2009 | US20090159287 In-situ formation of solids for well completions and zonal isolation |
| 06/25/2009 | US20090159285 Downhole initiator |
| 06/25/2009 | US20090159284 System and method for mitigating shock effects during perforating |
| 06/25/2009 | US20090159280 Solid borozirconate and borotitanate cross-linkers |
| 06/25/2009 | US20090159279 Methods and systems for completing multi-zone openhole formations |
| 06/25/2009 | US20090159278 Single Packer System for Use in Heavy Oil Environments |
| 06/25/2009 | US20090159277 Enhanced Hydrocarbon Recovery by in Situ Combustion of Oil Sand Formations |
| 06/25/2009 | US20090159275 System and method for optimizing production in a well |
| 06/25/2009 | US20090159270 Shunt tube connector lock |
| 06/25/2009 | US20090159268 Coupler retained liner hanger mechanism and methods of setting a hanger inside a wellbore |
| 06/25/2009 | US20090159263 Device for remotely actuating the safety lock of individual oil pumping apparatus |
| 06/25/2009 | US20090159262 Electric submersible pump (esp) with recirculation capability |
| 06/25/2009 | CA2708396A1 Methods of contacting and/or treating a subterranean formation |
| 06/25/2009 | CA2708287A1 Submersible pump with surfactant injection |
| 06/25/2009 | CA2708220A1 Methods of treating subterranean wells using changeable additives |
| 06/25/2009 | CA2708166A1 Fracturing fluid compositions comprising solid epoxy particles and methods of use |
| 06/25/2009 | CA2707021A1 Oilfield area network communication system and method |
| 06/25/2009 | CA2706382A1 Systems and methods for low emission hydrocarbon recovery |
| 06/25/2009 | CA2702730A1 Stimulation through fracturing while drilling |
| 06/24/2009 | EP2072829A1 Immersion pump |
| 06/24/2009 | EP2072751A2 Perforating gun gravitational orientation system |
| 06/24/2009 | EP2072750A2 Mechanical expansion system |
| 06/24/2009 | EP1649139B1 A pipe separator with improved separation |
| 06/24/2009 | CN201262080Y Profile control water-blocking apparatus for activator |
| 06/24/2009 | CN201262079Y Unpowered quantity-controllable medicine-adding apparatus |
| 06/24/2009 | CN201262078Y Pressure-testing hollow water distributor |
| 06/24/2009 | CN201262077Y Anti-scaling anti-clamping eccentric water distributing apparatus |
| 06/24/2009 | CN201262076Y Minor diameter communication type eccentric water distributing apparatus |
| 06/24/2009 | CN201262075Y Minor diameter eccentric water distributing apparatus |
| 06/24/2009 | CN201262074Y High-strength eccentric water distributing apparatus |
| 06/24/2009 | CN201262073Y Transportation type eccentric water distribution blanking plug |
| 06/24/2009 | CN201262072Y Screwing type inner blind hole composite perforating tool |
| 06/24/2009 | CN201262071Y Dual-insurance sand-screening pipe |
| 06/24/2009 | CN201262070Y Hydraulic oil-pumping unit |
| 06/24/2009 | CN201262069Y Pumping machine attached with balance beam |
| 06/24/2009 | CN101466915A Drilling fluid flow diverter |
| 06/24/2009 | CN101463721A Temperature-controlled explosion method for gasified deep part coal body of coal mine underground coal bed |
| 06/24/2009 | CN101463720A Explosive shock dissipater |
| 06/24/2009 | CN101463719A Flow control device of high-efficiency flow control screen pipe |
| 06/24/2009 | CN101463718A Same-well production technique column for low-permeation horizontal well |
| 06/24/2009 | CN100504068C Pulley type flexible driving pumping unit |
| 06/24/2009 | CN100504026C Perforation and cracking method |
| 06/24/2009 | CN100504025C Intelligent hydraulic oil production well device |
| 06/23/2009 | US7550413 Injectinga viscoelastic surfactant (VES) gelling agent; and a fluid loss control agent of alkali earth metal oxides, alkali earth metal hydroxides, transition metal oxides, transition metal hydroxides through a wellbore to the subterranean formation |
| 06/23/2009 | US7549486 Screen apparatus and method |
| 06/23/2009 | US7549480 Device for performing a downhole operation |
| 06/23/2009 | US7549479 Tubular flotation with pressurized fluid |
| 06/23/2009 | US7549478 Well jet device and the operating method thereof |
| 06/23/2009 | US7549472 Method for increasing the production of hydrocarbon liquids and gases |
| 06/23/2009 | US7549470 Solution mining and heating by oxidation for treating hydrocarbon containing formations |
| 06/23/2009 | US7549467 Wellbore motor having magnetic gear drive |
| 06/23/2009 | CA2589332C Method and system for accessing subterranean deposits from the surface |
| 06/23/2009 | CA2588018C Viscoelastic surfactant rheology modification |
| 06/23/2009 | CA2531549C System and technique for orienting and positioning a lateral string in a multilateral system |
| 06/23/2009 | CA2523862C Apparatus for radially expanding and plastically deforming a tubular member |
| 06/23/2009 | CA2473248C Perforating gun quick connection system |
| 06/23/2009 | CA2450840C Method of and apparatus for casing a borehole |
| 06/23/2009 | CA2401709C Wireless downhole well interval inflow and injection control |
| 06/22/2009 | CA2735449A1 Isolating tubing |
| 06/21/2009 | CA2646168A1 Method of treating subterranean reservoirs |