| 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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| 09/27/2000 | CN1268207A Stimulation of lenticular natural gas formations |
| 09/27/2000 | CN1268206A Installing a scrolled resilient sheet alongside the inner surface of a fluid conduit |
| 09/27/2000 | CN1268068A Improved helical separator |
| 09/27/2000 | CN1056907C Apparatus for movement along underground passage and method using the same |
| 09/27/2000 | CN1056904C Metering device for oil well two phase separation pressure varying control instrument |
| 09/27/2000 | CN1056903C Acidization for processing underground reservoirs |
| 09/27/2000 | CN1056902C Method for increasing methane recovery rate from prodn. well coal seam |
| 09/26/2000 | USRE36880 Spoolable flexible hydraulic controlled coiled tubing safety valve |
| 09/26/2000 | US6123152 Retrieving well tools under pressure |
| 09/26/2000 | US6123150 Branch boreholes |
| 09/26/2000 | US6123149 Dual injection and lifting system using an electrical submersible progressive cavity pump and an electrical submersible pump |
| 09/25/2000 | CA2272269A1 Flow responsive time delay pump motor control logic |
| 09/21/2000 | WO2000055474A1 A method for increasing recovery of hydrocarbons |
| 09/20/2000 | EP1036251A1 Arrangement in a separator |
| 09/20/2000 | CN2397256Y Vehicular formaldehyde automatic filling device |
| 09/19/2000 | US6119781 Method of operating an oil and gas production well activated by a pumping system |
| 09/19/2000 | US6119780 Wellbore fluid recovery system and method |
| 09/19/2000 | US6119779 Method and system for separating and disposing of solids from produced fluids |
| 09/19/2000 | US6119778 Method for recovering methane from a solid carbonaceous subterranean formation |
| 09/19/2000 | US6119776 Methods of stimulating and producing multiple stratified reservoirs |
| 09/14/2000 | WO2000053891A1 Scalloped gun body with improved tolerances for underground well perforating, and process of manufacturing the same |
| 09/13/2000 | EP1034375A1 Pump/motor assembly |
| 09/13/2000 | EP0811110B1 Oil well treatment |
| 09/13/2000 | CN2396205Y Reciprocating man-power lifting oil pump for producing oil |
| 09/13/2000 | CN2396178Y Preventing cover for pollution prevention working bodyguard |
| 09/13/2000 | CN1266185A Method for raising measuring precision of water content in water flooding developed oil-bearing formation |
| 09/13/2000 | CN1056434C Eccentric water-nozzle oil-nozzle water-distributor and pulling and running tool |
| 09/12/2000 | US6116353 Method and apparatus for installing a micro-well with a penetrometer |
| 09/12/2000 | US6116343 One-trip well perforation/proppant fracturing apparatus and methods |
| 09/12/2000 | US6116342 Methods of preventing well fracture proppant flow-back |
| 09/12/2000 | US6116341 Water injection pressurizer |
| 09/12/2000 | US6116338 Inducer for increasing centrifugal pump efficiency in wells producing high viscosity crude oil |
| 09/12/2000 | US6116270 Piston valve |
| 09/11/2000 | CA2608605A1 Forming a wellbore casing while simultaneously drilling a wellbore |
| 09/11/2000 | CA2607830A1 Forming a wellbore casing while simultaneously drilling a wellbore |
| 09/11/2000 | CA2607565A1 Forming a wellbore casing while simultaneously drilling a wellbore |
| 09/11/2000 | CA2607100A1 Forming a wellbore casing while simultaneously drilling a wellbore |
| 09/11/2000 | CA2607070A1 Forming a wellbore casing while simultaneously drilling a wellbore |
| 09/11/2000 | CA2606444A1 Forming a wellbore casing while simultaneously drilling a wellbore |
| 09/11/2000 | CA2300363A1 Forming a wellbore casing while simultaneously drilling a wellbore |
| 09/08/2000 | WO2000052293A2 Explosion prevention system for internal turret mooring system |
| 09/08/2000 | WO2000051707A1 Three-phase separator |
| 09/08/2000 | WO1999057410A9 Method of and device for production of hydrocarbons |
| 09/06/2000 | EP1032489A1 Method and apparatus for manufacturing an expandable slotted tube |
| 09/06/2000 | EP1032473A1 Device and method for separating a heterogeneous mixture |
| 09/06/2000 | EP0895561B1 Method and apparatus for remote control of multilateral wells |
| 09/06/2000 | CN2395054Y Single plunger double function oil pump |
| 09/06/2000 | CN2395031Y Positioner of perforation bullet frame |
| 09/06/2000 | CN2395030Y Spiral steel wire gap sand filter |
| 09/06/2000 | CN1056211C Method of producing fluid from earth formation |
| 09/05/2000 | US6113675 Gas separator having a low rotating mass |
| 09/05/2000 | US6113355 Pump drive head pump assembly with a hydraulic pump circuit for preventing back-spin when the drive head has been shut off |
| 09/05/2000 | US6112818 Downhole setting tool for an expandable tubing |
| 09/05/2000 | US6112817 Flow control apparatus and methods |
| 09/05/2000 | US6112815 Inflow regulation device for a production pipe for production of oil or gas from an oil and/or gas reservoir |
| 09/05/2000 | US6112808 Method and apparatus for subterranean thermal conditioning |
| 09/05/2000 | US6112570 Method for making slots in metal pipe |
| 09/05/2000 | CA2188889C Radial-flow filter and method of manufacture |
| 09/05/2000 | CA2084821C Ground contamination remediation process and apparatus |
| 08/31/2000 | WO2000050797A1 Improved eduction process |
| 08/31/2000 | WO2000050734A1 Downhole device for drilling a layer |
| 08/31/2000 | WO2000050733A1 Internal junction reinforcement |
| 08/31/2000 | WO2000050732A1 Selective zonal isolation within a slotted liner |
| 08/31/2000 | WO2000009851A3 Method for transportation of low molecular weight hydrocarbons |
| 08/30/2000 | CN2394003Y Sand anchor |
| 08/30/2000 | CN1265172A Creating zonal isolation between interior and exterior of well system |
| 08/29/2000 | US6110874 Non-toxic, inexpensive synthetic drilling fluid |
| 08/29/2000 | US6109833 Device for transferring fluid between equipment on the seabed and a surface unit |
| 08/29/2000 | US6109830 Riser system for connecting a seabed installation with a floating vessel |
| 08/29/2000 | US6109356 Well completion tool having pressure relief capability incorporated therein and associated method |
| 08/29/2000 | US6109350 Method of reducing water produced with hydrocarbons from wells |
| 08/29/2000 | US6109349 Particle control screen assembly for a perforated pipe used in a well, a sand filter system, and methods of making the same |
| 08/26/2000 | CA2299059A1 Liner hanger |
| 08/24/2000 | WO2000049370A1 Method for measuring the flow rates of the single phases in a multiphase fluid stream and relevant apparatus |
| 08/24/2000 | WO2000049273A1 Method of installing a sensor in a well |
| 08/24/2000 | WO2000049271A1 Circulating gun system |
| 08/24/2000 | WO2000020820A9 Detonators for use with explosive devices |
| 08/24/2000 | DE19861083A1 Exploitation of non-extractable coal seams for thermal energy, comprises reinforcing tunnel, drilling holes and inserting perforated collector tubes in holes |
| 08/23/2000 | EP1030094A2 Remotely operable underwater connector assembly |
| 08/23/2000 | EP1030034A2 Modularization of gas/oil separator |
| 08/23/2000 | EP1030032A2 Internal seal joint for separator arrangement |
| 08/23/2000 | EP1029596A1 Gas/liquid mixture separation |
| 08/23/2000 | EP1029178A1 Drive head for a rotary-driven rod assembly, especially for driving a sand pump |
| 08/23/2000 | CN1263978A Bridge-type eccentric testing and injection-recovery apparatus |
| 08/22/2000 | US6107255 Additive such as an emulsifier, a viscosifier, a weighting agent, fluid loss control agent, and wetting agent and an inexpensive base fluid comprising a specified paraffinic mixture of iso-paraffins and n-paraffins at least 90 wt % |
| 08/22/2000 | US6105688 Safety method and apparatus for a perforating gun |
| 08/22/2000 | US6105672 Enhanced petroleum fluid recovery process in an underground reservoir |
| 08/22/2000 | US6105671 Method and apparatus for minimizing emulsion formation in a pumped oil well |
| 08/22/2000 | US6105670 Injection/isolation tool |
| 08/17/2000 | WO2000047870A1 A method for use in sampling and/or measuring in reservoir fluid |
| 08/17/2000 | WO2000047868A1 Completion equipment having a plurality of fluid paths for use in a well |
| 08/17/2000 | WO2000047867A1 Sandfilter device for use in the recovery of oil, gas and water |
| 08/16/2000 | EP1028227A1 Method and apparatus for optimizing production from gas lift well |
| 08/16/2000 | EP1027527A2 Fluid separation and reinjection systems for oil wells |
| 08/16/2000 | EP1027526A1 Expandable downhole tubing |
| 08/16/2000 | EP1027524A1 Method and apparatus for viscosity reduction of clogging hydrocarbons in oil well |
| 08/16/2000 | CN2392003Y Non-balance beam type bevel gear well pumping unit |
| 08/16/2000 | CN2391987Y Multiple member, efficiency-enhancing and composite perforator |
| 08/16/2000 | CN1263481A Fluids containing viscoelastic surfactant and methods for using the same |
| 08/16/2000 | CN1263213A Sealing gasket component for submerged pump |