| 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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| 07/08/2004 | US20040131484 Well pumping unit driven by linear motor |
| 07/08/2004 | US20040131480 Bearing assembly for a progressive cavity pump and system for liquid lower zone disposal |
| 07/08/2004 | US20040129633 Oil, water and gas separator for swaying service |
| 07/08/2004 | US20040129460 Method for using coconut coir as a lost circulation material for well drilling |
| 07/08/2004 | US20040129431 Multi-pressure regulating valve system for expander |
| 07/08/2004 | US20040129430 Downhole latch |
| 07/08/2004 | US20040129428 Plunger lift deliquefying system for increased recovery from oil and gas wells |
| 07/08/2004 | US20040129427 Downhole pump |
| 07/08/2004 | US20040129426 Oil production processing system for swaying service |
| 07/08/2004 | US20040129425 Hybrid tension-leg riser |
| 07/08/2004 | US20040129422 Apparatus and method for wellbore isolation |
| 07/08/2004 | US20040129421 Filtered actuator port for hydraulically actuated downhole tools |
| 07/08/2004 | US20040129419 Rigless one-trip system |
| 07/08/2004 | US20040129418 Use of distributed temperature sensors during wellbore treatments |
| 07/08/2004 | US20040129415 Well perforating device |
| 07/08/2004 | DE10196366T5 Verfahren und Vorrichtung zum Schützen von Sprengstoffen Method and apparatus for protecting explosives |
| 07/07/2004 | EP1434926A1 Method and plant for increasing oil recovery by gas injection |
| 07/07/2004 | EP1434642A1 High-pressure separation of a multi-component gas |
| 07/07/2004 | CN2624054Y Slag flowing type coal-burning installation for high-performance energy-conserving environment-friendly moisture steam generator |
| 07/07/2004 | CN2623914Y Protective device for screw pump oil production system |
| 07/07/2004 | CN2623908Y High strength ring sealed tube pattern oil well pump |
| 07/07/2004 | CN2623873Y Well mouth sensor for automatic control cabinet of pumping unit |
| 07/07/2004 | CN2623872Y Oil well downhole pumping installation |
| 07/07/2004 | CN1511219A Method of controlling direction of propagation of injection fractures in permeable formations |
| 07/07/2004 | CN1511218A Radially expandable tubular with supported end portion |
| 07/07/2004 | CN1510249A Completion system of oil and gas wells with regulatably controlling flows of formation fluid or filled fluid in divided sections |
| 07/07/2004 | CN1510248A Sieve tube with flow adjuster |
| 07/07/2004 | CN1156647C Valve capable of raising the efficiency of oil pump |
| 07/07/2004 | CN1156643C Anti-pollution protecting method for sandwiched perforating gun |
| 07/06/2004 | US6760275 High impact communication and control system |
| 07/06/2004 | US6758289 Method and apparatus for hydrocarbon subterranean recovery |
| 07/06/2004 | US6758281 Methods and apparatus for creating a downhole buoyant casing chamber |
| 07/06/2004 | US6758278 Forming a wellbore casing while simultaneously drilling a wellbore |
| 07/06/2004 | US6758277 System and method for fluid flow optimization |
| 07/06/2004 | US6758271 System and technique to improve a well stimulation process |
| 07/06/2004 | US6758270 Method of microbial enhanced oil recovery |
| 07/06/2004 | US6758268 Heat exchanging, pyrolysis; monitoring temperature |
| 07/06/2004 | US6758124 Unique phasings and firing sequences for perforating guns |
| 07/06/2004 | US6758090 Method and apparatus for the detection of bubble point pressure |
| 07/06/2004 | CA2193309C Early evaluation system with pump and method of servicing a well |
| 07/01/2004 | WO2004055324A1 Acoustical well radiator |
| 07/01/2004 | WO2004055323A1 A plant and a method for increased oil recovery |
| 07/01/2004 | WO2004055322A1 A method for oil recovery from an oil field |
| 07/01/2004 | WO2004055316A2 System and method for fail-safe disconnect from a subsea well |
| 07/01/2004 | WO2003054340A3 Installation of evacuated tubular conduits |
| 07/01/2004 | WO2003054339A3 Casing while drilling |
| 07/01/2004 | WO2003042487A3 Mono diameter wellbore casing |
| 07/01/2004 | US20040124015 Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 07/01/2004 | US20040124008 Subsea wellbore drilling system for reducing bottom hole pressure |
| 07/01/2004 | US20040123988 Wellhead |
| 07/01/2004 | US20040123987 Gas recovery apparatus, method and cycle having a three chamber evacuation phase and two liquid extraction phases for improved natural gas production |
| 07/01/2004 | US20040123983 Isolation of subterranean zones |
| 07/01/2004 | DE10355079A1 Werkzeugstrang, Vorrichtung zum Isolieren von Signalen und Verfahren zum Verwenden eines Werkzeugstrangs Tool string apparatus for isolating signals, and method for using a tool string |
| 06/30/2004 | CN2622427Y Long plunge sand-resisting oil pump |
| 06/30/2004 | CN2622426Y Multi-function bottom valve for oil pump |
| 06/30/2004 | CN2622388Y Energy-saving regulator |
| 06/30/2004 | CN1509369A Method and system for enhanced access to subterranean zone |
| 06/30/2004 | CN1508439A Drive head for non-leakage screw pump |
| 06/30/2004 | CN1508390A Solid propping agent for oil-gas well fractrue |
| 06/30/2004 | CN1508389A Thermal recovery method for coal seam gas |
| 06/30/2004 | CN1508388A Layering injection amount and layering pressure test-free storage direct-reading method |
| 06/30/2004 | CN1508387A Thermal recovery method for coal seam gas |
| 06/30/2004 | CN1508386A Vertical pipe reciprocating chain pumping unit |
| 06/30/2004 | CN1508385A Vertical pipe ball-screw pumping unit |
| 06/30/2004 | CN1508384A Vertical pipe chain pumping unit |
| 06/30/2004 | CN1508383A Split motor-drived vertical-pipe reciprocating chain pumping unit |
| 06/30/2004 | CN1508382A Hydraulic self-controlled pumping unit |
| 06/29/2004 | US6756021 Device for eliminating gas or paraffin hydrate deposits that form in well drilling equipment or in hydrocarbon production or transportation equipment |
| 06/29/2004 | US6755978 For down-hole separation of multi-phase fluids produced by an oil well |
| 06/29/2004 | US6755628 Valve body for a traveling barrel pump |
| 06/29/2004 | US6755256 System for cementing a liner of a subterranean well |
| 06/29/2004 | US6755255 Flexible hose with hydraulic connections wrapped around spooling drum |
| 06/29/2004 | US6755252 Downhole surge pressure reduction and filtering apparatus |
| 06/29/2004 | US6755251 Downhole gas separation method and system |
| 06/29/2004 | US6755250 Gas-liquid separator positionable down hole in a well bore |
| 06/29/2004 | US6755249 Tubular casing having sacrificial plugged aperatures that remain secure when radially expanded but are acid or caustic soluble |
| 06/29/2004 | US6755247 Fluid property sensors and associated methods of calibrating sensors in a subterranean well |
| 06/29/2004 | US6755245 Apparatus for completing wells in unconsolidated subterranean zones |
| 06/29/2004 | CA2160258C Method for placement of a scale inhibitor in a formation |
| 06/29/2004 | CA2146580C Abrasion resistant gas separator |
| 06/29/2004 | CA2133992C Compressing gas flowing through a conduit |
| 06/24/2004 | WO2004053935A2 High power umbilicals for electric flowline immersion heating of produced hydrocarbons |
| 06/24/2004 | WO2004053434A2 System for radially expanding tubular members |
| 06/24/2004 | WO2004053330A2 Methods and apparatus for increasing and extending oil production from underground formations nearly depleted of natural gas drive |
| 06/24/2004 | WO2004053291A1 Downhole separation of oil and water |
| 06/24/2004 | WO2004052790A2 Apparatus for treatment of wastewater employing membrane bioreactors |
| 06/24/2004 | WO2004052495A1 Methods and apparatus for supplying high concentrations of dissolved oxygen and ozone for chemical and biological processes |
| 06/24/2004 | WO2003023180A3 Acid gas disposal method |
| 06/24/2004 | US20040118784 Process for removing oil from solid materials recovered from a well bore |
| 06/24/2004 | US20040118752 Method and apparatus for mixture separation |
| 06/24/2004 | US20040118607 Optimizing charge phasing of a perforating gun |
| 06/24/2004 | US20040118574 Mono-diameter wellbore casing |
| 06/24/2004 | US20040118572 Expandable sealing apparatus |
| 06/24/2004 | US20040118571 Expansion assembly for a tubular expander tool, and method of tubular expansion |
| 06/24/2004 | US20040118570 Wellscreen having helical support surface |
| 06/24/2004 | US20040118564 Method and apparatus for wellbore fluid treatment |
| 06/24/2004 | US20040118562 Retrievable multi-pressure cycle firing head |
| 06/24/2004 | US20040118558 Method and system for controlling the production rate of fluid from a subterranean zone to maintain production bore stability in the zone |
| 06/24/2004 | DE10258225A1 Arrangement for conveying crude oil from underwater regions comprises borehole leading vertically downward from seabed and then horizontally into oil-bearing layer, and lining comprising pipes which are lighter than steel |
| 06/24/2004 | DE10258224A1 Arrangement for conveying crude oil, used in underwater regions, comprises borehole having lining with pipes, and filter including at least one pipe made from fiber-reinforced plastic |