| 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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| 08/19/2009 | CN201292935Y Brake device of oil pumping machine |
| 08/19/2009 | CN201292840Y Assembly for co-operating perforation and formation test |
| 08/19/2009 | CN201292836Y Exploratory well oil-testing contimuous metering apparatus |
| 08/19/2009 | CN201292831Y Screw pump oil production electric heater unit |
| 08/19/2009 | CN201292830Y Gusher and electric pump well sucker rod electric heater unit |
| 08/19/2009 | CN201292829Y End filler |
| 08/19/2009 | CN201292828Y Deep water underwater oil storage oil production apparatus |
| 08/19/2009 | CN201292827Y Single-chamber direct combustion type liquid nitrogen evaporator |
| 08/19/2009 | CN201292826Y Controllable zonal injection, oil production and water-shutoff multifunction apparatus |
| 08/19/2009 | CN201292825Y Full-balance type hydraulic transmission oil pumping unit |
| 08/19/2009 | CN201292824Y Column rack type group drive pumping unit |
| 08/19/2009 | CN201292823Y Horse head positioning device of beam-pumping unit |
| 08/19/2009 | CN201292809Y Water faucet for adjustable plugging device |
| 08/19/2009 | CN201292808Y Thickening cam for adjustable packer |
| 08/19/2009 | CN201292807Y Adaptation connector connecting structure for enhancing adjustable packer throwing casting and dragging longevity |
| 08/19/2009 | CN201292806Y Anti-clamp structure of adjustable packer |
| 08/19/2009 | CN201292804Y Rotation-proof apparatus for adjustable packer |
| 08/19/2009 | CN201292803Y Cam screw mounting structure of adjustable packer |
| 08/19/2009 | CN201292802Y Adjustable packer with graduation |
| 08/19/2009 | CN201292787Y Oil fetching and bailing suspension rope apparatus |
| 08/19/2009 | CN201292779Y Underground travel increasing apparatus for oil pumping machine |
| 08/19/2009 | CN201292777Y Hollow polished rod bending proof and leakage proof means |
| 08/19/2009 | CN101512100A Method and system for pore pressure prediction |
| 08/19/2009 | CN101509368A Underground coal gasification multi-combining production system and method |
| 08/19/2009 | CN101509367A Oil reservoir development simulation system, upper-coated pressure system and data processing method thereof |
| 08/19/2009 | CN101509366A Weight dropper machine controlled door case type petroleum pumping unit |
| 08/19/2009 | CN101509365A Cluster well load mutually-balancing energy-conserving oil pumping system |
| 08/19/2009 | CN101509364A Pendulum guide rod type pumping unit |
| 08/19/2009 | CN101509363A Overdrive clutch reversing zero energy consumption starting-up pumping unit |
| 08/19/2009 | CN101509362A Pumping unit apparatus for installing motor transmission mechanism in transversal direction |
| 08/19/2009 | CN101509100A Oil field perforating bullet body powder metallurgy material and perforating bullet body manufacturing method |
| 08/19/2009 | CN100529327C Method of installing a tubular assembly in a wellbore |
| 08/19/2009 | CA2654673A1 Artificial lift structures |
| 08/18/2009 | US7576043 having branched aliphatic chains used as reversible well bore fluid thickeners to recover hydrocarbon oil and gas; oil soluble; soluble in both organic and aqueous fluids; high speed breakdown of viscoelastic sols |
| 08/18/2009 | US7576041 Contacting a sulfamate stabilized, bromine-based breaker with an aqueous polysaccharide fracturing fluid; comprising bromine chloride, bromine and chlorine; reducing the viscosity of fracturing fluids in subterranean oil and gas wells |
| 08/18/2009 | US7576039 comprising sulfonated asphalt, and water soluble anionic copolymers or addition-condensation copolymers; thermally stable, use in water- and/or oil-based drilling fluids in the exploration of subterraneous petroleum and natural gas deposits |
| 08/18/2009 | US7575681 Microfluidic separator |
| 08/18/2009 | US7575062 Methods and devices for treating multiple-interval well bores |
| 08/18/2009 | US7575060 Collapse resistance of tubing |
| 08/18/2009 | US7575058 Incremental annular choke |
| 08/18/2009 | US7575057 Polymeric gel system and use in hydrocarbon recovery |
| 08/18/2009 | US7575054 Self diverting matrix acid |
| 08/18/2009 | US7575053 Low temperature monitoring system for subsurface barriers |
| 08/18/2009 | US7575052 In situ conversion process utilizing a closed loop heating system |
| 08/18/2009 | CA2452888C Friction reducing composition and method |
| 08/18/2009 | CA2432030C Mono-diameter wellbore casing |
| 08/15/2009 | CA2641969A1 Method and system for repositioning a pump jack |
| 08/13/2009 | WO2009100346A1 Expansion cone for expandable liner hanger |
| 08/13/2009 | WO2009100012A1 Underwater processing of fluid streams |
| 08/13/2009 | WO2009099945A2 Methods of using a particle impact drilling system for removing near-borehole damage, milling objects in a wellbore, under reaming, coring, perforating, assisting annular flow, and associated methods |
| 08/13/2009 | WO2009099744A1 Apparatus, assembly and process for injecting fluid into a subterranean well |
| 08/13/2009 | WO2009098512A2 Apparatus and method for controlling the flow of downhole fluids |
| 08/13/2009 | WO2009097869A1 Gas-liquid separator |
| 08/13/2009 | WO2009073484A3 Methods for improving the productivity of oil producing wells |
| 08/13/2009 | WO2008072970A8 Method for laying a pipeline having an inner corrosion proof cladding |
| 08/13/2009 | US20090200854 Solution mining and in situ treatment of nahcolite beds |
| 08/13/2009 | US20090200037 Method and arrangement for removing soils, particles or fluids from the seabed or from great sea depths |
| 08/13/2009 | US20090200036 Method for Subsea Hydrocarbon Recovery |
| 08/13/2009 | US20090200035 All Electric Subsea Boosting System |
| 08/13/2009 | US20090200033 Compositions and methods for gas well treatment |
| 08/13/2009 | US20090200032 System, method and apparatus for creating an electrical glow discharge |
| 08/13/2009 | US20090200031 Irregular spacing of heat sources for treating hydrocarbon containing formations |
| 08/13/2009 | US20090200027 Compositions and methods for gas well treatment |
| 08/13/2009 | US20090200026 Method for recovery of natural gas from a group of subterranean zones |
| 08/13/2009 | US20090200025 High temperature methods for forming oxidizer fuel |
| 08/13/2009 | US20090200024 Modified process for hydrocarbon recovery using in situ combustion |
| 08/13/2009 | US20090200023 Heating subsurface formations by oxidizing fuel on a fuel carrier |
| 08/13/2009 | US20090200022 Cryogenic treatment of gas |
| 08/13/2009 | US20090200021 Perforation method and apparatus |
| 08/13/2009 | US20090200020 Methods and apparatus for optimizing well production |
| 08/13/2009 | US20090200019 System and method for enhanced oil recovery using an in-situ seismic energy generator |
| 08/13/2009 | US20090200018 Systems and methods for producing oil and/or gas |
| 08/13/2009 | US20090200017 Method and device for treating bottom-hole zones of oil-and-gas-bearing formations |
| 08/13/2009 | US20090200016 Method and apparatus to facilitate formation sampling |
| 08/13/2009 | US20090200015 Method and liquid for increasing the recovery factor in oil reservoirs |
| 08/13/2009 | US20090200014 Systems and Methods for Improved Positioning of Pads |
| 08/13/2009 | US20090200011 Truck-mounted pumping system for treating a subterranean formation via a well with a mixture of liquids |
| 08/13/2009 | US20090200009 Perforating system with shaped charge case having a modified boss |
| 08/13/2009 | DE19983678B4 Bohrloch-Aktivierungssystem Borehole activation system |
| 08/13/2009 | DE102007008292B4 Vorrichtung und Verfahren zur In-Situ-Gewinnung einer kohlenwasserstoffhaltigen Substanz unter Herabsetzung deren Viskosität aus einer unterirdischen Lagerstätte Apparatus and method for in-situ extraction of a hydrocarbonaceous substance, while reducing its viscosity, from an underground deposit |
| 08/13/2009 | CA2813001A1 Method of controlling a recovery and upgrading operation in a reservoir |
| 08/13/2009 | CA2715054A1 Gas-liquid separator |
| 08/13/2009 | CA2714411A1 Expansion cone for expandable liner hanger |
| 08/13/2009 | CA2713536A1 Method of controlling a recovery and upgrading operation in a reservoir |
| 08/13/2009 | CA2713445A1 Underwater processing of fluid streams |
| 08/13/2009 | CA2712069A1 Apparatus, assembly and process for injecting fluid into a subterranean well |
| 08/12/2009 | EP2088279A2 Downhole completion tool |
| 08/12/2009 | EP2087201A1 Sub sea processing system |
| 08/12/2009 | EP2087200A1 Valve for equalizer sand screens |
| 08/12/2009 | EP2087062A1 Recovery of oil |
| 08/12/2009 | CN201289064Y Steam-filling boiler composite heat preserving structure |
| 08/12/2009 | CN201288760Y Crankshaft pin anti- reversing device of beam-pumping unit |
| 08/12/2009 | CN201288543Y Step premixed static mixer |
| 08/12/2009 | CN201288542Y Mixing system for diluting thick oil for superdeep well |
| 08/12/2009 | CN201288541Y Abdication apparatus for complex permanent magnet oil pumping machine |
| 08/12/2009 | CN201288540Y Crane type long stroke oil pumping machine |
| 08/12/2009 | CN201288539Y Motor direct connection type moving beam oil pumping machine |
| 08/12/2009 | CN201288538Y Mechanical automatic control hydraulic transmission oil pumping machine |
| 08/12/2009 | CN201288537Y Natural gas pumping apparatus |
| 08/12/2009 | CN201288536Y Energy saving type long stroke low frequency oil pumping machine |