| 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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| 04/16/2009 | US20090095473 Method of Fracturing Hydrocarbon-Bearing Formation With Coated Porous Polyolefin Particulate |
| 04/16/2009 | US20090095472 Well treatment fluid compositions and methods of use that include a delayed release percarbonate formulation |
| 04/16/2009 | US20090095471 Multi-zone gravel pack system with pipe coupling and integrated valve |
| 04/16/2009 | US20090095463 Circulation control valve and associated method |
| 04/16/2009 | CA2769568A1 Method, apparatus, and magnet for magnetically treating fluids |
| 04/16/2009 | CA2702593A1 Method, apparatus, and magnet for magnetically treating fluids |
| 04/16/2009 | CA2701232A1 Pipe connection system |
| 04/16/2009 | CA2700320A1 Flow restriction device |
| 04/16/2009 | CA2641395A1 Stand-alone drainage hole drilling system |
| 04/15/2009 | EP2048322A2 An assembly for cutting into a well tubular |
| 04/15/2009 | EP2047063A1 System and vessel hydrocarbon production and method for intervention on subsea equipment |
| 04/15/2009 | EP2047062A1 Connection tool with indexing system |
| 04/15/2009 | EP2047061A2 A composition and method for making a proppant |
| 04/15/2009 | EP2046912A1 Mixture for improved foaming in the extraction of petroleum or natural gas |
| 04/15/2009 | CN201221461Y Double-plunger self-rotating oil well pump |
| 04/15/2009 | CN201221344Y High pressure water injection motor controller |
| 04/15/2009 | CN201221343Y Slim hole ultra-deep penetration gun perforation cartridge |
| 04/15/2009 | CN201221342Y Compression-resistant anti-twist high strength V-shaped slot self-cleaning sand-proof screen pipe |
| 04/15/2009 | CN201221341Y Tower frame tube type linear synchronous motor drive oil pumping machine |
| 04/15/2009 | CN201221340Y T type double-pulley set oil pumping machine |
| 04/15/2009 | CN201221338Y Quantitative water mixing valve |
| 04/15/2009 | CN201221337Y Single well water injection amount regulating and controlling valve |
| 04/15/2009 | CN201221335Y Water injection packer |
| 04/15/2009 | CN201221323Y Rope suspension machine for oil pumping machine |
| 04/15/2009 | CN201221319Y Multi-layer oriented perforating interlayer directional connection fixing device |
| 04/15/2009 | CN101410588A Method of fracturing a coalbed gas reservoir |
| 04/15/2009 | CN101410587A Expandable tubular assembly |
| 04/15/2009 | CN101408167A Method for moving belt oil pumping machine |
| 04/15/2009 | CN101408099A Weight dropper machine control lever type petroleum oil pumping machine |
| 04/15/2009 | CN101407777A Potsdam Bacillus brevis and use thereof |
| 04/15/2009 | CA2640797A1 Control system for reciprocating device |
| 04/14/2009 | US7516802 Assembly and method for determining thermal properties of a formation and forming a liner |
| 04/14/2009 | US7516797 Method for operating a well jet device in the conditions of a formation hydraulic fracturing |
| 04/14/2009 | US7516796 Piston pump assembly with flexible riser pipe |
| 04/14/2009 | US7516795 Subsea petroleum production system method of installation and use of the same |
| 04/14/2009 | US7516794 Pipe separator for the separation of fluids, particularly oil, gas and water |
| 04/14/2009 | US7516793 Methods and systems for fracturing subterranean wells |
| 04/14/2009 | US7516792 Remote intervention logic valving method and apparatus |
| 04/14/2009 | US7516790 Mono-diameter wellbore casing |
| 04/14/2009 | US7516789 Hydrocarbon recovery facilitated by in situ combustion utilizing horizontal well pairs |
| 04/14/2009 | US7516787 Method of developing a subsurface freeze zone using formation fractures |
| 04/14/2009 | US7516785 Method of developing subsurface freeze zone |
| 04/14/2009 | US7516784 In-situ method of coal gasification |
| 04/14/2009 | CA2560344C Method and apparatus for removing oil from water including monitoring of adsorbent saturation |
| 04/14/2009 | CA2497617C Method and apparatus for locating and re-entering one or more horizontal wells using whipstocks |
| 04/14/2009 | CA2478953C Method and pump apparatus for removing liquids from wells |
| 04/12/2009 | CA2640150A1 System and method for fracturing while drilling |
| 04/12/2009 | CA2606628A1 Methods for characterizing heavy oils |
| 04/09/2009 | WO2009046108A2 Oil well pump apparatus |
| 04/09/2009 | WO2009046070A2 Shrink tube encapsulated magnet wire for electrical submersible motors |
| 04/09/2009 | WO2009045995A2 Liner drilling method and liner hanger |
| 04/09/2009 | WO2009045870A2 System and method for performing oilfield operations |
| 04/09/2009 | WO2009045816A2 Method and system for interpreting swabbing tests using nonlinear regression |
| 04/09/2009 | WO2009045732A1 Downhole tools having screens for insertion into gravel disposed in wellbores and methods of installing same |
| 04/09/2009 | WO2009045259A2 Apparatus for adjustably controlling the inflow of production fluids from a subterranean well |
| 04/09/2009 | WO2009045110A1 Electrically-driven hydraulic pump unit having an accumulator module for use in subsea control systems |
| 04/09/2009 | WO2009044109A2 Determining fluid rheological properties |
| 04/09/2009 | WO2009044075A2 Improved process for enhanced oil recovery |
| 04/09/2009 | WO2009043901A2 Inflatable packer with energy and triggering section |
| 04/09/2009 | WO2009043589A2 Method and device for in situ determination of the operating states of driven machines |
| 04/09/2009 | WO2008147436A3 Apparatus and method for controlled deployment of shape-conforming materials |
| 04/09/2009 | US20090090517 Apparatus and method for electrical packer feedthrough |
| 04/09/2009 | US20090090516 Tubular liner |
| 04/09/2009 | US20090090515 Wellhead Isolation Sleeve Assembly |
| 04/09/2009 | US20090090512 System and method for delivering a cable downhole in a well |
| 04/09/2009 | US20090090511 System and method for controlling solids in a down-hole fluid pumping system |
| 04/09/2009 | US20090090509 In situ recovery from residually heated sections in a hydrocarbon containing formation |
| 04/09/2009 | US20090090507 Wellbore and reservoir treatment device |
| 04/09/2009 | US20090090506 Downhole Release of Friction Reducers in Gravel Packing Operations |
| 04/09/2009 | US20090090503 Hydraulic actuated pump system |
| 04/09/2009 | US20090090499 Well system and method for controlling the production of fluids |
| 04/09/2009 | CA2698785A1 Improved process for enhanced oil recovery |
| 04/09/2009 | CA2687317A1 Oil well pump apparatus |
| 04/08/2009 | EP2045439A1 Use of surface-modified nanoparticles for oil recovery |
| 04/08/2009 | EP2045438A2 Recovery of hydrocarbons |
| 04/08/2009 | EP2045437A2 Wellbore fluid treatment tubular and method |
| 04/08/2009 | EP1692423B1 Method of producing a hermetic tubular joint comprising local and initial added thickness(es), by means of plastic expansion |
| 04/08/2009 | CN201218911Y Coordination apparatus for oil well liquid supply and drain |
| 04/08/2009 | CN201218760Y Pressure type load sensor for micro-deformation of oil pumping machine balance beam |
| 04/08/2009 | CN201218759Y Embedded load sensor for rope frame of oil pumping machine |
| 04/08/2009 | CN201218093Y Thick oil borehole viscosity-reduction oil-extraction heating apparatus |
| 04/08/2009 | CN201218092Y Vane type bidirectional vortex flow cavity static mixer |
| 04/08/2009 | CN201218091Y Oil well automatic layer regulation and allocation device |
| 04/08/2009 | CN201218090Y Variable path down-hole throttling device |
| 04/08/2009 | CN201218089Y Electric perforating multi-time security igniting circuit conversion device |
| 04/08/2009 | CN201218088Y Inner blind hole perforating tool |
| 04/08/2009 | CN201218087Y Hydropower sand jet perforator |
| 04/08/2009 | CN201218086Y Sand preventing screen pipe |
| 04/08/2009 | CN201218085Y High-strength equal-diameter sand-prevention screening tube |
| 04/08/2009 | CN201218084Y Liquid-discharging gas-extracting column with discharge aid device |
| 04/08/2009 | CN201218083Y Replacing drive rope retractor of double-head oil pumping machine |
| 04/08/2009 | CN201218082Y Gas well skid-mounted throttling heating stove |
| 04/08/2009 | CN201218080Y Gas well dividing test novel technique column |
| 04/08/2009 | CN201217198Y Special purpose tools for disassembling mule head bolt pin of oil pumping machine |
| 04/08/2009 | CN101403903A Speed protection controller of leather belt oil pumping machine |
| 04/08/2009 | CN101403314A Coal mine down-hole drilling hydraulic fracturing anti-reflection mash gas extraction technique |
| 04/08/2009 | CN101403290A Method for improving extraction rate of ultra-thick oil |
| 04/08/2009 | CN101403289A Gravel pre-filling sand prevention pipe |
| 04/08/2009 | CN101403288A Prying supercharging integration method |
| 04/08/2009 | CN101403287A Direct driving type multi-stroke multi-well oil pumping machine |