| 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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| 01/14/2009 | EP2013444A2 Particle control screen with depth filtration |
| 01/14/2009 | EP1917416B1 Installation comprising at least two seafloor-surface connectors for at least two submarine pipelines resting on the seafloor |
| 01/14/2009 | EP1756395B1 A method and a device for expanding a body under overpressure |
| 01/14/2009 | EP1751394A4 Improved down hole oil and gas well heating system and method for down hole heating of oil and gas wells |
| 01/14/2009 | EP1546506B1 A flow control device for an injection pipe string |
| 01/14/2009 | CN201180768Y Chain gearing device of closed box oil pumping machine |
| 01/14/2009 | CN201180637Y Fluted disc type brake protecting device of oil pumping machine |
| 01/14/2009 | CN201180636Y Numerical control reciprocating type oil-submersible motor driven oil pump |
| 01/14/2009 | CN201180635Y Hydraulic double-acting rodless pump |
| 01/14/2009 | CN201180534Y High energy gas fracture construction pipe column |
| 01/14/2009 | CN201180533Y Sand-blocking pipe nipple |
| 01/14/2009 | CN201180532Y Novel oil pumping machine balance weight |
| 01/14/2009 | CN201180531Y Floater oil pumping device |
| 01/14/2009 | CN201180530Y Transmission mechanism of closed box oil pumping machine |
| 01/14/2009 | CN201180529Y Balance weight of balance beam type oil pumping machine |
| 01/14/2009 | CN201180528Y Liquid preparation continuous instilment apparatus with automatic casing pressure control |
| 01/14/2009 | CN201180509Y Down-hole energy accumulation type low frequency pressure pulse generator |
| 01/14/2009 | CN101346530A Controlling pressure and static charge within a wellbore |
| 01/14/2009 | CN101346324A Low density proppant particles and use thereof |
| 01/14/2009 | CN101344764A Oil-water separation automatic measurement and control system of multi-purpose station free water remover |
| 01/14/2009 | CN101344348A Oil field produced water heat pump technique |
| 01/14/2009 | CN101343994A Oil, gas, water and methanol four-phase separator |
| 01/14/2009 | CN101343993A Demixing injection-production column jacket segmenting obstruction pressed operation technique and apparatus |
| 01/14/2009 | CN101343992A Horizontal well drillable quartz sand filter tube sand-prevention assorted column jacket |
| 01/14/2009 | CN101343991A Single bore diameter well completion structure and well completion method |
| 01/14/2009 | CN101343990A Ball helical gearing oil pumping machine |
| 01/14/2009 | CN101343989A High-dryness oil field steam-injection boiler and high-dryness steam production method |
| 01/14/2009 | CA2618817A1 Oil recovery process employing amphoteric surfactants |
| 01/13/2009 | US7478024 Integrated reservoir optimization |
| 01/13/2009 | US7476644 Method and materials for hydaulic fracturing of wells |
| 01/13/2009 | US7476317 Hydrocyclone for down-hole use |
| 01/13/2009 | US7475735 Tubular hanger and method of lining a drilled bore |
| 01/13/2009 | US7475731 Sand plunger |
| 01/13/2009 | US7475729 Method for construction and completion of injection wells |
| 01/13/2009 | US7475728 Treating subterranean formation with treatment fluid containing a base fluid, a viscosifier, a fluid loss control additive, and a degradable bridging agent such as, polysaccharide, a chitin, a chitosan, a protein, a polyester, a poly(glycolide), a poly( lactide), polycarbonate etc., allowing to degrade |
| 01/13/2009 | US7475725 Wellbore gravel packing apparatus and method |
| 01/13/2009 | US7475724 Method of determining a fluid inflow profile of wellbore |
| 01/13/2009 | CA2485777C Method for controlling the fluid loss properties of viscoelastic surfactant based fluids |
| 01/13/2009 | CA2441130C Steel pipe for embedding-expanding, and method of embedding-expanding oil well steel pipe |
| 01/13/2009 | CA2376298C Method and apparatus for homogenizing drilling fluid in an open-loop process |
| 01/13/2009 | CA2314801C Apparatus for measurement |
| 01/08/2009 | WO2009006528A1 Centering structure for tubular member and method of making same |
| 01/08/2009 | WO2009006326A2 Gravel-packing carrier fluid with internal breaker |
| 01/08/2009 | WO2009006253A2 Degradable gels in zonal isolation applications |
| 01/08/2009 | WO2009005880A2 Fracture stimulation for a wellbore using thermoset polymer nanocomposite particles |
| 01/08/2009 | WO2009005876A2 System and method for monitoring and controlling production from wells |
| 01/08/2009 | WO2009005387A1 Perforation strategy for heterogeneous proppant placement in hydralic fracturing |
| 01/08/2009 | WO2009004311A1 Method and apparatus for wellsite verification of properties of a fluid |
| 01/08/2009 | WO2009003249A1 Method for controlling the intermittent operation mode of stripper oil wells |
| 01/08/2009 | US20090008101 Method of Producing a Low Pressure Well |
| 01/08/2009 | US20090008096 Treating Subterranean Zones |
| 01/08/2009 | US20090008095 Wellbore Fluid Comprising a Base Fluid and a Particulate Bridging Agent |
| 01/08/2009 | US20090008094 Method of Treating Subterranean Formations With Porous Ceramic Particulate Materials |
| 01/08/2009 | US20090008093 Proppants for gel clean-up |
| 01/08/2009 | US20090008092 Wellbore Method and Apparatus For Sand And Inflow Control During Well Operations |
| 01/08/2009 | US20090008091 Single Phase Microemulsions and In Situ Microemulsions for Cleaning Formation Damage |
| 01/08/2009 | US20090008090 Generating Heated Fluid |
| 01/08/2009 | US20090008089 Control system and method for controlling a hybrid petroleum extractor/power generator |
| 01/08/2009 | US20090008088 Oscillating Fluid Flow in a Wellbore |
| 01/08/2009 | US20090008085 Manufacturing of sand screens |
| 01/08/2009 | US20090008084 Method and apparatus for connecting shunt tubes to sand screen assemblies |
| 01/08/2009 | US20090008083 Method and apparatus for wellbore fluid treatment |
| 01/08/2009 | US20090008082 Sound source for stimulation of oil reservoirs |
| 01/08/2009 | US20090008080 Stress and torque reducing tool |
| 01/08/2009 | US20090008079 Methods and apparatus to sample heavy oil in a subterranean formation |
| 01/08/2009 | US20090008078 Flow control assembly having a fixed flow control device and an adjustable flow control device |
| 01/08/2009 | CA2717813A1 Centering structure for tubular member and method of making same |
| 01/08/2009 | CA2692961A1 Method for treatment of high ph/silica brines |
| 01/08/2009 | CA2691804A1 Gravel-packing carrier fluid with internal breaker |
| 01/08/2009 | CA2688665A1 A method for the fracture stimulation of a subterranean formation having a wellbore by using thermoset polymer nanocomposite particles as proppants, where said particles are prepared by using formulations containing reactive ingredients obtained or derived from renewable feedstocks |
| 01/08/2009 | CA2684291A1 System and method for monitoring and controlling production from wells |
| 01/07/2009 | EP2010831A1 Method and device for the utilization of supercritical subsurface steam in combination with supercritical thermal and hydraulic power stations |
| 01/07/2009 | EP2010820A2 Method and device for producing a gaseous medium comprising steam |
| 01/07/2009 | EP2010755A2 Time sequenced heating of multiple layers in a hydrocarbon containing formation |
| 01/07/2009 | EP2010753A2 Chemical amendments for the stimulation of biogenic gas generation in deposits of carbonaceous material |
| 01/07/2009 | EP2010752A1 Systems and methods for producing oil and/or gas |
| 01/07/2009 | EP1704298B1 Wellbore screen |
| 01/07/2009 | CN201178396Y Intelligent energy saving control apparatus of oil pumping machine dragging equipment |
| 01/07/2009 | CN201176922Y Bridge type separated oil production pump |
| 01/07/2009 | CN201176921Y Hanging pendulum type dynamic balancing synergistic energy-saving oil pumping machine |
| 01/07/2009 | CN201176873Y Oilfield water injection well flow gauge |
| 01/07/2009 | CN201176870Y Water injection well ground distribution device |
| 01/07/2009 | CN201176869Y Salvaging device |
| 01/07/2009 | CN201176868Y Circular ring seam sand preventing screen pipe |
| 01/07/2009 | CN201176867Y Intelligentized novel yield-increasing gas lift device |
| 01/07/2009 | CN201176866Y Fixed pressure production mandrel |
| 01/07/2009 | CN201176865Y Hydraulic balancing beam-pumping unit |
| 01/07/2009 | CN201176864Y Single well multifunctional tank for oil transportation |
| 01/07/2009 | CN201176858Y Anticollision polished rod eye |
| 01/07/2009 | CN201176857Y Polished rod eye without beating clip for bumping pump |
| 01/07/2009 | CN101338663A Horizontal well mechanical staged fracturing blocking-proof process pipe column |
| 01/07/2009 | CN101338662A Method and preventing and reducing hydrogen sulfide of aqueous system and promoting oil recovery factor |
| 01/07/2009 | CN101338661A Method for water injection adopting small area oilfield water injection equipment |
| 01/07/2009 | CN101338660A Horizontal production-injection well completion structure possessing flow control function |
| 01/07/2009 | CN101338659A Slit sieve tube with polytetrafluorethylene coatings |
| 01/07/2009 | CN101338658A Hermetic electric submersible pump production completion system capable of proceeding steel wire operation |
| 01/07/2009 | CN100449204C Gas-water co-regulating method for monitoring and controlling steam dryness of steam injection boiler of oilfield |
| 01/07/2009 | CN100449115C Method for determining stratum diameter of well hole of projection hole finished well |
| 01/07/2009 | CN100449114C Self-conforming well screen |
| 01/07/2009 | CN100449113C Method for drilling and completing wells |