| 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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| 08/12/2009 | CN201288535Y Down-hole direct-driving oil production system for oil-submersible servo motor |
| 08/12/2009 | CN201288534Y Oil pumping apparatus for implementing self-cleaning function of sand filtering tube by elasticity of oil pipe |
| 08/12/2009 | CN201288529Y Horizontal radiation section for oilfield steam filling boiler |
| 08/12/2009 | CN101506466A System, vessel and method for production of oil and heavier gas fractions from a reservoir below the seabed |
| 08/12/2009 | CN101506465A Controlling the pressure within an annular volume of a wellbore |
| 08/12/2009 | CN101504136A Steam-filling quality monitoring instrument for steam-filling boiler |
| 08/12/2009 | CN101503958A Integral self-cleaning sieve tube of V-shaped joint filter |
| 08/12/2009 | CN101503957A Aboveground and underground combined heat injection coal bed gas extraction method |
| 08/12/2009 | CN101503956A Method for improving crude oil recovery ratio by utilization of industrial sewage and waste gas |
| 08/12/2009 | CN101503954A Water faucet for adjustable plugging device |
| 08/12/2009 | CN100526601C Dynamic test device for composite perforator |
| 08/12/2009 | CN100526600C Well casing protecting equipment for deep coal underground gasification production well |
| 08/12/2009 | CN100526599C Same-well double-medium synchronous separate injection tubing string tool and its separate injection method |
| 08/12/2009 | CN100526598C Inverted pendulum variable-pitch beam pump |
| 08/12/2009 | CN100526415C Phase permeability modifying agent and method for improving recovery efficiency of crude oil by using same |
| 08/11/2009 | US7572757 Method of treating a well with a gel stabilizer |
| 08/11/2009 | US7571778 Method of drilling a bore hole |
| 08/11/2009 | US7571777 Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell |
| 08/11/2009 | US7571774 Self-lubricating expansion mandrel for expandable tubular |
| 08/11/2009 | US7571771 Cavity well system |
| 08/11/2009 | US7571768 Method and apparatus for perforating a casing and producing hydrocarbons |
| 08/11/2009 | US7571767 High porosity fractures and methods of creating high porosity fractures |
| 08/11/2009 | US7571766 Methods of fracturing a subterranean formation using a jetting tool and a viscoelastic surfactant fluid to minimize formation damage |
| 08/11/2009 | US7571765 Hydraulic open hole packer |
| 08/11/2009 | US7571644 Characterizing a reservoir in connection with drilling operations |
| 08/11/2009 | CA2653373A1 Compositions and methods for gas and oil well treatment |
| 08/11/2009 | CA2550207C Method and apparatus for conducting earth borehole operations using coiled casing |
| 08/11/2009 | CA2539422C Cemented open hole selective fracing system |
| 08/11/2009 | CA2521007C Particulate material containing thermoplastic elastomer and methods for making and using same |
| 08/11/2009 | CA2439364C Compositions and methods to control fluid loss in surfactant-based wellbore service fluids |
| 08/11/2009 | CA2401150C Foaming agents for use in coal seam reservoirs |
| 08/11/2009 | CA2342406C Utilization of energy from flowing fluids |
| 08/06/2009 | WO2009097338A2 Hydraulic oil well pumping apparatus |
| 08/06/2009 | WO2009097158A1 Inverted drainholes |
| 08/06/2009 | WO2009096805A1 Method of hydraulic fracturing of horizontal wells, resulting in increased production |
| 08/06/2009 | WO2009095512A1 Pollutant collection device |
| 08/06/2009 | WO2009073360A3 Bypass crossover sub selector for multi-zone fracturing processes |
| 08/06/2009 | WO2008127255A3 Downhole perforator assembly and method for use of same |
| 08/06/2009 | US20090194338 Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 08/06/2009 | US20090194296 Extended Length Cable Assembly for a Hydrocarbon Well Application |
| 08/06/2009 | US20090194295 System, method and apparatus for electrical submersible pump with integrated gas separator |
| 08/06/2009 | US20090194294 Downhole Draw-Down Pump and Method |
| 08/06/2009 | US20090194293 Apparatus, assembly and process for injecting fluid into a subterranean well |
| 08/06/2009 | US20090194292 Inverted drainholes |
| 08/06/2009 | US20090194291 Hydraulic oil well pumping apparatus |
| 08/06/2009 | US20090194290 Control system for blowout preventer stack |
| 08/06/2009 | US20090194289 Water sensitive adaptive inflow control using cavitations to actuate a valve |
| 08/06/2009 | US20090194288 Subterranean Treatment Fluids with Enhanced Particulate Transport or Suspension Capabilities and Associated Methods |
| 08/06/2009 | US20090194287 Induction heaters used to heat subsurface formations |
| 08/06/2009 | US20090194286 Multi-step heater deployment in a subsurface formation |
| 08/06/2009 | US20090194284 Magnetic Motor Shaft Couplings For Wellbore Applications |
| 08/06/2009 | US20090194282 In situ oxidation of subsurface formations |
| 08/06/2009 | US20090194281 Optimum salinity profile in surfactant/polymer flooding |
| 08/06/2009 | US20090194280 Method of controlling a recovery and upgrading operation in a reservoir |
| 08/06/2009 | US20090194279 Downhole sampling tool and method for using same |
| 08/06/2009 | US20090194278 Enhanced Oil Recovery In Oxygen Based In Situ Combustion Using Foaming Agents |
| 08/06/2009 | US20090194277 Single trip tubing punch and setting tool |
| 08/06/2009 | US20090194276 Determination of an actual optimum salinity and an actual optimum type of microemulsion for surfactant/polymer flooding |
| 08/06/2009 | US20090194274 Statistical determination of historical oilfield data |
| 08/06/2009 | US20090194273 Method and Apparatus for Orchestration of Fracture Placement From a Centralized Well Fluid Treatment Center |
| 08/06/2009 | US20090194272 Apparatus and method for treating injection fluid |
| 08/06/2009 | US20090194269 Three-phase heaters with common overburden sections for heating subsurface formations |
| 08/06/2009 | CA2750337A1 Hydraulic oil well pumping apparatus |
| 08/06/2009 | CA2713430A1 Inverted drainholes |
| 08/06/2009 | CA2711773A1 Method of hydraulic fracturing of horizontal wells, resulting in increased production |
| 08/06/2009 | CA2653099A1 Enhanced oil recovery in oxygen based in situ combustion using foaming agents |
| 08/05/2009 | EP2085572A2 Plunger lift system for well |
| 08/05/2009 | EP2085571A2 Single trip tubing punch and setting tool |
| 08/05/2009 | EP2084367A1 Reinforced polymeric siphon tubes |
| 08/05/2009 | EP1497530B1 Method for increasing production from a wellbore |
| 08/05/2009 | CN201284644Y Releasing type projection pressure head |
| 08/05/2009 | CN201284643Y Electric motor under-positioned gearless counterweight traction type oil pumping unit |
| 08/05/2009 | CN201284642Y Top sheave type vector control electric motor pumping unit |
| 08/05/2009 | CN201284641Y Cathode protector of oil water well |
| 08/05/2009 | CN201284638Y Oil tube hanger |
| 08/05/2009 | CN101501295A Methods for producing oil and/or gas |
| 08/05/2009 | CN101498229A Zero discharge natural gas power generation and liquefaction apparatus |
| 08/05/2009 | CN101498212A Controllable acid pouring pipe and method |
| 08/05/2009 | CN101498211A Method for water distribution by sound wave remote control |
| 08/05/2009 | CN101498210A Coal bed gas slim-hole hydraulic jet orienting fracturing yield increasing method |
| 08/05/2009 | CN101498209A Charging pipe for polyenergy perforating bomb |
| 08/05/2009 | CN101498208A Process for backwashing permeable downhole filter by high pressure fluid column in oil conduit |
| 08/05/2009 | CN101498207A Chain transmission of closed box body oil pump |
| 08/05/2009 | CN101498206A Supporting roller shift apparatus of closed box body oil pump |
| 08/05/2009 | CN101498199A Controllable liquid injection pipe and controllable liquid injection method convenient for downhole and uplifting |
| 08/05/2009 | CN100523430C Gas driven oil production |
| 08/05/2009 | CN100523429C Overground gathering and transporting system for petroleum exploitation and method thereof |
| 08/05/2009 | CN100523118C Re-use agent for polymer after driving and injecting method thereof |
| 08/04/2009 | US7569523 Method and materials for hydraulic fracturing of wells using a liquid degradable thermoplastic polymer |
| 08/04/2009 | US7568527 Method of collecting crude oil and crude oil collection header apparatus |
| 08/04/2009 | US7568525 Method and system for increasing well rate using well-capital-string perforation |
| 08/04/2009 | US7568524 Polyphenylene sulfide proppants |
| 08/04/2009 | US7568523 Treatment of cesium-containing fluids |
| 08/04/2009 | CA2652489A1 Low residue fluid fracturing system and method of use |
| 08/04/2009 | CA2635989C Fracturing fluid compositions, methods of preparation and methods of use |
| 08/04/2009 | CA2509317C Method and apparatus for expanding and separating tubulars in a wellbore |
| 08/04/2009 | CA2492809C System to reduce hydrostatic pressure in risers using buoyant spheres |
| 08/04/2009 | CA2486594C Connector for expandable downhole tubulars |
| 08/04/2009 | CA2466771C Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell |
| 08/04/2009 | CA2461673C Profiled encapsulation for use with instrumented expandable tubular completions |