| 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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| 01/03/2008 | WO2008002147A1 Apparatus and method for preventing the penetration of seawater into a compressor module during lowering to or retrieval from the seabed |
| 01/03/2008 | WO2008001310A1 Method and system for treating a subterraean formation using diversion |
| 01/03/2008 | WO2008000932A2 Optimized method for storing heat energy in an aquifer |
| 01/03/2008 | WO2007047026A3 Heavy wax stimulation diverting agent |
| 01/03/2008 | US20080004189 Effervescent biocide compositions for oilfield applications |
| 01/03/2008 | US20080001403 Snap-lock bushing for prepacked screens |
| 01/03/2008 | US20080000694 Mechanical and fluid jet drilling method and apparatus |
| 01/03/2008 | US20080000646 Device and method to seal boreholes |
| 01/03/2008 | US20080000639 Method and System for Treating a Subterraean Formation Using Diversion |
| 01/03/2008 | US20080000638 Proppant material and formation hydraulic fracturing method |
| 01/03/2008 | US20080000637 Downhole flow-back control for oil and gas wells by controlling fluid entry |
| 01/03/2008 | US20080000636 Method of repairing failed gravel packs |
| 01/03/2008 | US20080000632 Dual cylinder lift pump system and method |
| 01/03/2008 | CA2659715A1 Method and system for treating a subterraean formation using diversion |
| 01/03/2008 | CA2656027A1 Method and apparatus for protection of compressor modules against influx of contaminated gas |
| 01/03/2008 | CA2656021A1 Apparatus and method for preventing the penetration of seawater into a compressor module during lowering to or retrieval from the seabed |
| 01/03/2008 | CA2653731A1 Dewatering apparatus |
| 01/02/2008 | EP1873349A1 Reciprocating pumping assembly and method with hollow sucker rods and no production tubing |
| 01/02/2008 | EP1871988A2 Systems and methods for producing oil and/or gas |
| 01/02/2008 | EP1871987A1 In situ conversion process systems utilizing wellbores in at least two regions of a formation |
| 01/02/2008 | EP1871986A1 Varying properties along lengths of temperature limited heaters |
| 01/02/2008 | EP1871985A1 In situ conversion process utilizing a closed loop heating system |
| 01/02/2008 | EP1871984A2 Down hole physical upgrading of heavy crude oils by selective energy absorption |
| 01/02/2008 | EP1871982A1 Temperature limited heater utilizing non-ferromagnetic conductor |
| 01/02/2008 | EP1871981A1 Grouped exposed metal heaters |
| 01/02/2008 | EP1727962B1 Method of injecting lift gas into a production tubing of an oil well and gas lift flow control device for use in the mehtod |
| 01/02/2008 | CN200999793Y Multilevel antithrust bearing of down-hole double-screw pump system |
| 01/02/2008 | CN200999726Y Down-hole double-screw pump system |
| 01/02/2008 | CN200999720Y Composite tumbling-box impulsive motion reduced speed energy conservation oil pumping machine |
| 01/02/2008 | CN200999719Y Beam type oil pumping machine braking bias-wearing regulating device |
| 01/02/2008 | CN200999718Y Oil production well high efficiency oil-well pump |
| 01/02/2008 | CN200999717Y Oil-well pump downhole operation auxiliary device |
| 01/02/2008 | CN200999609Y Environment-friendly type acidizing fracturing vehicle |
| 01/02/2008 | CN200999608Y Sand preventing screen pipe |
| 01/02/2008 | CN200999607Y Long through type sand preventing screen pipe |
| 01/02/2008 | CN200999606Y Conversion split stream device |
| 01/02/2008 | CN200999595Y Multifunctional movable joint |
| 01/02/2008 | CN200999594Y Compression type high-temperature heat insulation convexity inner pipe seal short piece |
| 01/02/2008 | CN101099273A Means for transferring electric power in a turret-moored vessel and method of assembly |
| 01/02/2008 | CN101099073A Improvements in and relating to oil well perforators |
| 01/02/2008 | CN101099027A Unsintered mesh sand control screen |
| 01/02/2008 | CN101099024A Methods and apparatus for drilling, completing and configuring u-tube boreholes |
| 01/02/2008 | CN101096908A Two stage low pressure method coal bed gas producing natural gas method |
| 01/02/2008 | CN101096907A Method for producing natural gas from coal bed gas under low pressure |
| 01/02/2008 | CN101096906A Cement through side pocket mandrel |
| 01/02/2008 | CN100359797C Method for operating flexible powering frequency changing regulating speed control apparatus of direct control oil pumping unit |
| 01/02/2008 | CN100359129C Variable section runner coal layer underground gasifying furnace |
| 01/02/2008 | CN100359128C Inhibiting wellbore deformation during in situ thermal processing of a hydrocarbon containing formation |
| 01/01/2008 | US7314089 Method of wellbore pumping apparatus with improved temperature performance and method of use |
| 01/01/2008 | US7314084 Subsea pumping module system and installation method |
| 01/01/2008 | US7314081 Pumping from two levels of a pool of production fluid, and one way valve therefore |
| 01/01/2008 | US7314080 Slidable sleeve plunger |
| 12/29/2007 | CA2591737A1 Effervescent biocide compositions for oilfield applications |
| 12/29/2007 | CA2551315A1 Reciprocating pumping assembly and method with hollow sucker rods and no production tubing |
| 12/27/2007 | WO2007149770A2 Vortex induced vibration suppression systems and methods |
| 12/27/2007 | WO2007149622A2 Sulfur barrier for use with in situ processes for treating formations |
| 12/27/2007 | WO2007149008A1 Method for operating a well jet device at a hydraulic fracturing of multilayer hydrocarbon reservoirs |
| 12/27/2007 | WO2007148269A1 Fluid diversion measurement methods and systems |
| 12/27/2007 | WO2007024383A3 Method and apparatus associated with stimulation treatments for wells |
| 12/27/2007 | WO2006127981A3 Expandable liner hanger system and method |
| 12/27/2007 | WO2006119240A3 Separating constituents of a fluid mixture |
| 12/27/2007 | WO2006104982A3 Fluid recovery system and method |
| 12/27/2007 | WO2004027199A8 Accelerated production of gas from a subterranean zone |
| 12/27/2007 | US20070298979 Composition for denaturing and breaking down friction-reducing polymer and for destroying other oil well contaminants |
| 12/27/2007 | US20070295513 Tubular Flotation With Pressurized Fluid |
| 12/27/2007 | US20070295510 Electric Progressive Cavity Pump |
| 12/27/2007 | US20070295508 Shock-release fluid fracturing method and apparatus |
| 12/27/2007 | US20070295506 Orbital Downhole Separator |
| 12/27/2007 | US20070295505 Chemical amendments for the stimulation of biogenic gas generation in deposits of carbonaceous material |
| 12/27/2007 | US20070295504 Providing A String Having An Electric Pump And An Inductive Coupler |
| 12/27/2007 | US20070295503 In-situ method of coal gasification |
| 12/27/2007 | US20070295502 System for Well Logging |
| 12/27/2007 | US20070295500 Method of treating bottom-hole formation zone |
| 12/27/2007 | US20070295499 Recovery process |
| 12/27/2007 | CA2659580A1 Fluid diversion measurement methods and systems |
| 12/27/2007 | CA2649348A1 Sulfur barrier for use with in situ processes for treating formations |
| 12/27/2007 | CA2590422A1 Electric progressive cavity pump |
| 12/26/2007 | EP1869285A1 Compositions and use of mono-and polyenoic acids for breaking ves-gelled fluids |
| 12/26/2007 | EP1619352A9 Method and system for accessing subterranean deposits from the surface |
| 12/26/2007 | CN200996468Y Microwave lubricating-oil safety device of reducer for pumping unit |
| 12/26/2007 | CN200996374Y Large-sprue feedback oil-well pump |
| 12/26/2007 | CN200996372Y Heavy spherical pump with double oil filling |
| 12/26/2007 | CN200996291Y Oil-vapour separater under well |
| 12/26/2007 | CN200996290Y Nylon netted sieving pipe of non-base pipe reinforcing bar skeleton |
| 12/26/2007 | CN200996289Y Anti-freezing and sandproof current regulater of air well under well |
| 12/26/2007 | CN200996288Y Wellwall pipe-protecting system for extracting uranium by ground submerging method |
| 12/26/2007 | CN200996287Y Beamed economizing pumping unit with lower-offset barbell |
| 12/26/2007 | CN200996286Y Intelligent hydraulic oil extracter |
| 12/26/2007 | CN101092955A Motor driven pumping unit with two dish surfaces |
| 12/26/2007 | CN101092954A Vacuum ground oil blotting depressed machine |
| 12/26/2007 | CN101092873A Fluctuant dissolving dipping mining method |
| 12/26/2007 | CN101092872A Method for laying stations at level of upper branches of collection and transportion branches in low producing gas field in low pressure and low penetrability |
| 12/26/2007 | CN100357598C Gear-type-changing oil pumping device of pump with rod |
| 12/26/2007 | CN100357565C Sleeved sand control device for downhole oil extraction device |
| 12/26/2007 | CN100357387C Water-base fracturing fluid with low harm to permeability of reservoir bed and diversion capability of crack |
| 12/25/2007 | US7312428 Processing hydrocarbons and Debye frequencies |
| 12/25/2007 | US7311152 Gas operated pump for hydrocarbon wells |
| 12/25/2007 | US7311151 Substantially neutrally buoyant and positively buoyant electrically heated flowlines for production of subsea hydrocarbons |
| 12/25/2007 | US7311147 Methods of improving well bore pressure containment integrity |
| 12/25/2007 | US7311146 Subterranean treatment fluids, friction reducing copolymers, and associated methods |