| 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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| 12/17/2008 | CN101324178A Casing tube heightening well head safety compensation apparatus |
| 12/17/2008 | CN101324176A Spring self-switching type Y-shaped joint |
| 12/17/2008 | CN101324160A Beam type oil pumping machine crank guard rail |
| 12/16/2008 | US7464763 Method of injecting lift gas and gas lift flow control device |
| 12/16/2008 | US7464762 System for neutralizing the formation of slugs in a riser |
| 12/16/2008 | US7464760 Inhibiting reservoir souring using a treated injection water |
| 12/16/2008 | US7464759 Method for flowing fluid into or from a well |
| 12/16/2008 | US7464758 Model HCCV hydrostatic closed circulation valve |
| 12/16/2008 | US7464756 Process for in situ recovery of bitumen and heavy oil |
| 12/16/2008 | US7464754 CO2 foamed well treatments |
| 12/16/2008 | US7464753 Methods and apparatus for enhanced production of plunger lift wells |
| 12/16/2008 | US7464752 Wellbore apparatus and method for completion, production and injection |
| 12/16/2008 | US7464449 Method of forming a high-strength sealed connection for expandable tubulars |
| 12/16/2008 | CA2398589C Pad plunger assembly with concave pad subassembly |
| 12/14/2008 | CA2591876A1 Method of reducing methanol usage in a gas well |
| 12/11/2008 | WO2008151316A2 Downhole swaging system and method |
| 12/11/2008 | WO2008151315A2 Insert sleeve forming device for a recess shoe |
| 12/11/2008 | WO2008151293A2 System and method for performing oilfield production operations |
| 12/11/2008 | WO2008151052A2 Completion method for fracturing and gravel packing |
| 12/11/2008 | WO2008150811A1 Apparatus and method for managings supply of additive at wellsites |
| 12/11/2008 | WO2008150179A1 Bellows valve |
| 12/11/2008 | WO2008148613A2 Power transmission system for use with downhole equipment |
| 12/11/2008 | WO2008148297A1 A hydraulic oil pump |
| 12/11/2008 | WO2008129292A3 Improvements relating to oil and gas production |
| 12/11/2008 | WO2008116899A3 Wellbore system and method of completing a wellbore |
| 12/11/2008 | WO2008070343A3 Methods and apparatuses for electronic time delay and systems including same |
| 12/11/2008 | WO2007143489A3 Composition for inhibiting formation of gas hydrates |
| 12/11/2008 | US20080302540 Insert sleeve forming device for a recess shoe |
| 12/11/2008 | US20080302534 Full bore lined wellbores |
| 12/11/2008 | US20080302533 Removable Injection or Production Flow Equalization Valve |
| 12/11/2008 | US20080302532 Systems and methods for producing oil and/or gas |
| 12/11/2008 | US20080302531 Process for recovering oil from subterranean reservoirs |
| 12/11/2008 | US20080302529 Multi-zone formation fluid evaluation system and method for use of same |
| 12/11/2008 | US20080302528 Borehole Seismic Pulse Generation Using Rapid-Opening Valve |
| 12/11/2008 | US20080302523 Wireline retrievable dsg/downhole pump system for cyclic steam and continuous steam flooding operations in petroleum reservoirs |
| 12/11/2008 | US20080302522 System For Cyclic Injection and Production From a Well |
| 12/11/2008 | CA2688532A1 Completion method for fracturing and gravel packing |
| 12/11/2008 | CA2688520A1 Apparatus and method for managings supply of additive at wellsites |
| 12/11/2008 | CA2688089A1 Bellows valve |
| 12/11/2008 | CA2685955A1 Power transmission system for use with downhole equipment |
| 12/10/2008 | EP1999340A1 Method of fracturing a coalbed gas reservoir |
| 12/10/2008 | EP1999339A1 Use of fluorocarobon surfactants to improve productivity of gas and gas condensate wells |
| 12/10/2008 | EP1660755B1 Portable, surface-mounted well pump |
| 12/10/2008 | EP1659103A4 Charging material for producing refractory high-strength spherical granules and method for the production thereof |
| 12/10/2008 | EP1633954B1 Apparatus and method for treating injection fluid |
| 12/10/2008 | EP1542779B1 Device for separating multi-phase fluids |
| 12/10/2008 | EP1502002B1 Well completion with merged influx of well fluids |
| 12/10/2008 | CN201162734Y Novel two-stage efflux pump for oil extraction |
| 12/10/2008 | CN201162662Y Brake stopping clip of oil pumping machine |
| 12/10/2008 | CN201162660Y Hydraulic secondary balancing device of beam pumping unit |
| 12/10/2008 | CN201162534Y Intelligent monitoring instrument for oil salvage operation |
| 12/10/2008 | CN201162532Y Multifunctional thick oil hot-extraction column jacket |
| 12/10/2008 | CN201162531Y Controllable acid injection pipe |
| 12/10/2008 | CN201162530Y Dirty oil and water collection and re-injection apparatus |
| 12/10/2008 | CN201162529Y Column jacket type sand filtering barrel |
| 12/10/2008 | CN201162528Y Expansible sand-prevention screening tube |
| 12/10/2008 | CN201162527Y Program controlled energy-saving oil pumping machine |
| 12/10/2008 | CN201162526Y Numerical control double-well chain type oil pumping machine |
| 12/10/2008 | CN201162525Y Multifunctional oil storage apparatus for oil well |
| 12/10/2008 | CN201162524Y Sand-proof draining protection apparatus |
| 12/10/2008 | CN201162500Y Screw connection structure of non-node hoop expansion screen casing |
| 12/10/2008 | CN201162499Y Thread connector of expansion sand-prevention screening tube |
| 12/10/2008 | CN101321843A Particles |
| 12/10/2008 | CN101319608A Method for down-hole removing hydrogen sulphide in natural gas |
| 12/10/2008 | CN101319607A Method for no-grounding treatment and comprehensive utilization of oil-gas field downhole operation output solution |
| 12/10/2008 | CN101319606A Anti-pressure anti-torsion high-strength V-groove self-cleaning sand-proof screen pipe |
| 12/10/2008 | CN101319605A Multi-zone production rate regulating column tool for oil-submersible electric pump well and its multi-zone production rate regulating method |
| 12/10/2008 | CN101319603A High-strength sealing steam injection packer |
| 12/10/2008 | CN100441830C Releasing gadget sealing insertion head gas-injection tube pile |
| 12/09/2008 | US7461699 Method for providing a temporary barrier in a flow pathway |
| 12/09/2008 | US7461697 Placing the treatment fluid containing coated particulates having been treated with a surface modification agent and coated with a hydrolysable coating into a subterranean formation via a well bore |
| 12/09/2008 | US7461696 Methods of fracturing using fly ash aggregates |
| 12/09/2008 | US7461695 System and method for creating packers in a wellbore |
| 12/09/2008 | US7461694 Introducing a flooding fluid containing water and erucyl amidopropyl betaine into the reservoir; extracting the oil through a wellbore at a location different than the point of introduction of the flooding fluid into the reservoir |
| 12/09/2008 | US7461693 Method for extraction of hydrocarbon fuels or contaminants using electrical energy and critical fluids |
| 12/09/2008 | US7461692 Multi-stage gas separator |
| 12/09/2008 | US7461691 In situ recovery from a hydrocarbon containing formation |
| 12/09/2008 | US7461580 Casing conveyed well perforating apparatus and method |
| 12/09/2008 | CA2557526C Prediction of shallow drilling hazards using seismic refraction data |
| 12/09/2008 | CA2509130C Methods and compositions for introducing conductive channels into a hydraulic fracturing treatment |
| 12/09/2008 | CA2502521C Riser installation vessel and method of using the same |
| 12/09/2008 | CA2500704C Mono-trip well completion |
| 12/09/2008 | CA2444086C Apparatus and method for utilising expandable sand screen in wellbores |
| 12/09/2008 | CA2309414C Improved acid corrosion inhibitor |
| 12/04/2008 | WO2008147762A1 Method of fracturing an earth formation, earth formation borehole system, method of producing a mineral hydrocarbon substance |
| 12/04/2008 | WO2008147503A1 Utilization of low btu gas generated during in situ heating of organic-rich rock |
| 12/04/2008 | WO2008147241A1 Method of propping agent delivery to the well |
| 12/04/2008 | WO2008146043A1 Methods of laying elongate articles at sea |
| 12/04/2008 | WO2008145726A1 Method for completing a borehole |
| 12/04/2008 | WO2008144934A1 An in situ extraction process for the recovery of hydrocarbons |
| 12/04/2008 | WO2008112260A3 High strength ceramic elements and methods for making and using the same |
| 12/04/2008 | WO2008070271A3 System and method for facilitating downhole operations |
| 12/04/2008 | US20080296026 Wellbore Collection System |
| 12/04/2008 | US20080296023 Compositions containing shape-conforming materials and nanoparticles that absorb energy to heat the compositions |
| 12/04/2008 | US20080296022 Method for Treating Subterranean Formation |
| 12/04/2008 | US20080296021 Perforating Torch Apparatus and Method |
| 12/04/2008 | US20080296020 Compositions containing shape-conforming materials and nanoparticles to enhance elastic modulus |
| 12/04/2008 | US20080296019 Completion Method for Fracturing and Gravel Packing |
| 12/04/2008 | US20080296018 System and method for extracting petroleum and generating electricity using natural gas or local petroleum |
| 12/04/2008 | US20080296017 Methods and Apparatus to Sample Heavy Oil from a Subteranean Formation |