| 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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| 02/05/2009 | US20090032248 Method for production, substitution, or mining of gas hydrate |
| 02/05/2009 | US20090032245 Flow control system having a downhole rotatable valve |
| 02/05/2009 | US20090032244 Flow control system having an isolation device for preventing gas interference during downhole liquid removal operations |
| 02/05/2009 | US20090032240 Apparatus for driving rotating down hole pumps |
| 02/05/2009 | US20090032239 Marginal Oil Extraction Device |
| 02/05/2009 | US20090032237 Shape Memory Alloy Closure Spring for Subsurface Safety Valves Triggered by Well Fluids |
| 02/05/2009 | DE102007036832A1 Vorrichtung zur In-Situ-Gewinnung einer kohlenwasserstoffhaltigen Substanz Device for in situ extraction of a hydrocarbonaceous substance |
| 02/05/2009 | CA2763203A1 Method for managing production from a hydrocarbon producing reservoir in real-time |
| 02/05/2009 | CA2695273A1 Biological enhancement of hydrocarbon extraction |
| 02/05/2009 | CA2694910A1 Reclamation of halide-contaminated formate brines |
| 02/05/2009 | CA2694634A1 Methane hydrate dissociation accelerating and methane gas deriving system |
| 02/05/2009 | CA2694511A1 Methods of increasing fracture resistance in low permeability formations |
| 02/05/2009 | CA2693876A1 Thrust and intake chamber for pump |
| 02/05/2009 | CA2693486A1 Valuing future information under uncertainty |
| 02/05/2009 | CA2691399A1 Method of recovering oil or bitumen by injection of a recovery fluid and of a diverting agent |
| 02/04/2009 | EP2020482A2 Liner Hanger, Running Tool and Method |
| 02/04/2009 | EP2019988A1 Flow simulation in a well or pipe |
| 02/04/2009 | EP2019907A1 System and method for optimization of gas lift rates on multiple wells |
| 02/04/2009 | EP2019906A1 System and method for multivariable control in three-phase separation oil and gas production |
| 02/04/2009 | CN201191706Y Energy controller for high energy-cumulating large power electric impulse apparatus |
| 02/04/2009 | CN201191367Y Fully closed loop energy-saving control apparatus of oil pumping machine |
| 02/04/2009 | CN201190563Y Rotary metering device |
| 02/04/2009 | CN201190560Y Device separating and collecting reverse flow of well liquid |
| 02/04/2009 | CN201190559Y Ultralong sucker rod heat pipe assembly with high heat transfer characteristic |
| 02/04/2009 | CN201190558Y Supercharging water injection device |
| 02/04/2009 | CN201190557Y Straight-line pumping unit |
| 02/04/2009 | CN201190556Y Double-crane tube oil tank |
| 02/04/2009 | CN101360945A External protection for expandable tubular threaded joints |
| 02/04/2009 | CN101360884A Methods of stabilizing unconsolidated subterranean formations |
| 02/04/2009 | CN101360883A Method for expanding tubular piece in well |
| 02/04/2009 | CN101358519A Lifting bail type core pipe connecting with high energy gas fracture bomb |
| 02/04/2009 | CN101358518A Heavy oil thermal recovery balanced steam injection and regulation device |
| 02/04/2009 | CN101358517A Telemetry subsystem to communicate with plural downhole modules |
| 02/04/2009 | CN101358516A Simplified operation string of pumping well |
| 02/04/2009 | CN101358513A Water injection packer |
| 02/04/2009 | CN100458255C implement of plastic expansion of sealed tubular joint with inclined abutting surface |
| 02/04/2009 | CN100458158C Driver for steel cable lifting band of pumping unit |
| 02/04/2009 | CN100458099C Oil production device for gas-drive well |
| 02/04/2009 | CN100458098C Linear electromagnetic pumping unit |
| 02/04/2009 | CN100457247C Surface active agent, its formula system and its application in tertiary oil extraction |
| 02/03/2009 | US7484565 Methods and apparatus for injecting fluids at a subterranean location in a well |
| 02/03/2009 | US7484564 Delayed-acid releasing activator comprises an orthoacetate, orthoformate, orthopropionate or a polyorthoester; stabilization of subterranean formations; tackifier resins comprising polymethyl (meth)acrylate, poly(meth)acrylic acid, acrylamido-2-methylpropanesulfonic acid polymers and the like; fracturing |
| 02/03/2009 | US7484562 Method and apparatus for controlling a quantity of a specific gas in a group of gases produced from a given well bore |
| 02/03/2009 | US7484561 Electro thermal in situ energy storage for intermittent energy sources to recover fuel from hydro carbonaceous earth formations |
| 02/03/2009 | US7484560 Process for enhanced recovery of crude oil from oil wells using novel microbial consortium |
| 02/03/2009 | CA2528722C Flow control apparatus for use in a wellbore |
| 02/01/2009 | CA2769709A1 Drainage of heavy oil reservoir via horizontal wellbore |
| 02/01/2009 | CA2693261A1 Injection plane initiation in a well |
| 01/29/2009 | WO2009015031A1 Apparatus, method and system for stochastic workflow in oilfield operations |
| 01/29/2009 | WO2009014865A1 Apparatus for and method of deploying a centralizer installed on an expandable casing string |
| 01/29/2009 | WO2009014821A2 Method for recovering crude oil from a subterranean formation |
| 01/29/2009 | WO2009014786A1 A method to enhance proppant conductivity from hydraulically fractured wells |
| 01/29/2009 | WO2009014586A1 Use of a heavy petroleum fraction as drive fluid in the recovery of hydrocarbons from a subterranean formation |
| 01/29/2009 | WO2009013503A1 Method and apparatus for monitoring offshore contamination |
| 01/29/2009 | WO2008148613A3 Power transmission system for use with downhole equipment |
| 01/29/2009 | US20090029879 Process for enhanced oil recovery using a microbial consortium |
| 01/29/2009 | US20090025942 Borehole Liner |
| 01/29/2009 | US20090025938 Fluid injection device |
| 01/29/2009 | US20090025936 Connection system for subsea flow interface equipment |
| 01/29/2009 | US20090025935 Oxidizing sulfur compounds in two reaction zones to yield sulfurdioxide and sulfur,respectively; using exothermic heat from zone 1 toheat the sulfur in zone 2; reacting sulfur with hydrocarbons in zone 3 toyield a carbon disulfide product for enhanced oil recovery; energyefficiency; pollution control |
| 01/29/2009 | US20090025934 System and Method for Low Damage Fracturing |
| 01/29/2009 | US20090025933 System, Method, and Apparatus for Acid Fracturing with Scale Inhibitor Protection |
| 01/29/2009 | US20090025932 System and Method for Low Damage Gravel Packing |
| 01/29/2009 | US20090025931 Wellbore treatment for reducing wax deposits |
| 01/29/2009 | US20090025926 Field Joint for a Downhole Tool |
| 01/29/2009 | US20090025923 Technique and system for completing a well |
| 01/29/2009 | CA2694260A1 Method and apparatus for monitoring offshore contamination |
| 01/29/2009 | CA2694099A1 A method to enhance proppant conductivity from hydraulically fractured wells |
| 01/29/2009 | CA2694024A1 Method for recovering crude oil from a subterranean formation |
| 01/29/2009 | CA2690977A1 Apparatus for and method of deploying a centralizer installed on an expandable casing string |
| 01/28/2009 | EP2018349A1 A process for the manufacture of carbon disulphide |
| 01/28/2009 | CN201188566Y Anti-theft sliding rail for electric machine of oil-pumping machine |
| 01/28/2009 | CN201187436Y Straight-line reciprocating energy-saving oil pumping machine |
| 01/28/2009 | CN201187435Y Multifunctional sand deposition type oil well pump |
| 01/28/2009 | CN201187323Y Hole locking machine |
| 01/28/2009 | CN201187289Y Water-pouring ball bar |
| 01/28/2009 | CN201187288Y Multifunctional downhole liquid-producing processor |
| 01/28/2009 | CN201187287Y Charging pipe and perforation pipe column including multiple perforation gun parts |
| 01/28/2009 | CN201187286Y Intelligent well layered oil-finding control device |
| 01/28/2009 | CN201187285Y Oscillating moment-changing balancing device of beam type oil pumping machine |
| 01/28/2009 | CN201187284Y Oil pumping machine capable of pumping oil by single well and double-well linkage |
| 01/28/2009 | CN201187283Y Beam balance oil pumping machine |
| 01/28/2009 | CN201187267Y Throwing and dragging tools of blanking plug of eccentric water distributor |
| 01/28/2009 | CN201187265Y Double-suspension rope-suspending machine |
| 01/28/2009 | CN201186877Y Oil pump adjusting implement |
| 01/28/2009 | CN101353958A Acid fracturing process of oil gas well mining temperature control various mucic acid |
| 01/28/2009 | CN101353957A Same well production-injection method and pipe column |
| 01/28/2009 | CN101353956A Trapezoid slit sand-proof screen pipe |
| 01/27/2009 | US7482311 injecting oilfield treatment fluid containing polylactic homo or copolymer as acid generator and a solid acid reactive agent ( Mg/OH/, CaCO3 etc.) into a wellbore, penetrating formation, causing fluid to contact the formation surface, forming a filter cake, hydrolyzing acid generating precursor |
| 01/27/2009 | US7482310 preparing a fracturing fluid containing water-in oil emulsion of homo or copolymer of acrylamide, hydrophobic oil phase (mineral oil, paraffinc oil) a surfactant e.g. polyoxyethylene derivatives of sorbitan esters; solvent ( ethylene carbonate), inorganic microparticles, silica; contacting formations |
| 01/27/2009 | US7481281 Systems and methods for the drilling and completion of boreholes using a continuously variable transmission to control one or more system components |
| 01/27/2009 | US7481276 Method of inhibiting and/or preventing corrosion in oilfield treatment applications |
| 01/27/2009 | US7481275 separation of air into an oxygen-rich fraction and a nitrogen-rich fraction, reformation of natural gas together with oxygen to produce a synthesis gas for production of methanol or other oxygenated hydrocarbons or higher hydrocarbons |
| 01/27/2009 | US7481274 Temperature limited heaters with relatively constant current |
| 01/27/2009 | US7481272 Completion apparatus and methods for use in wellbores |
| 01/27/2009 | US7481270 Subsea pumping system |
| 01/27/2009 | US7481268 Collar assembly for pump thrust rod used to activate microswitch valve on chemical injection pump |
| 01/27/2009 | CA2567399C Method and apparatus for stimulating heavy oil production |
| 01/27/2009 | CA2529913C Technique and apparatus for completing multiple zones |
| 01/27/2009 | CA2509928C Apparatus and method to detect actuation of a flow control device |