| 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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| 02/15/2000 | US6024169 Method for window formation in wellbore tubulars |
| 02/15/2000 | US6024167 Transporting waterflood mobility control agents to high permeability zones |
| 02/15/2000 | CA2084951C Method and apparatus for measuring pumping rod position and other aspects of a pumping system by use of an accelerometer |
| 02/13/2000 | CA2280283A1 An acoustic transmission system |
| 02/10/2000 | WO2000009856A1 Crude-oil extraction method |
| 02/10/2000 | CA2279876A1 Oil production method |
| 02/09/2000 | EP0978919A2 High resistance grounding system for oil well electrical system |
| 02/09/2000 | EP0978629A2 Method of completing a well |
| 02/09/2000 | EP0977621A1 A method and device for the separation of a fluid in a well |
| 02/09/2000 | CN2363056Y 偏心配水器 Eccentric water |
| 02/09/2000 | CN2363055Y Water injection filter for water injection well of oil field |
| 02/09/2000 | CN2363054Y Automatic balance device walking beam oil pumping machine |
| 02/08/2000 | US6023443 Semblance processing for an acoustic measurement-while-drilling system for imaging of formation boundaries |
| 02/08/2000 | US6022421 Method for remotely launching subsea pigs in response to wellhead pressure change |
| 02/08/2000 | US6022080 Process and system for the solution mining of evaporites and preparation of saline solutions |
| 02/08/2000 | US6021850 Downhole pipe expansion apparatus and method |
| 02/08/2000 | US6021849 Double acting gas displaced chamber lift system and method |
| 02/08/2000 | US6021847 Removing a waste component from a hydrocarbon fluid |
| 02/08/2000 | US6021714 Shaped charges having reduced slug creation |
| 02/08/2000 | CA2186203C Method for reducing formation damage when drilling for oil and gas |
| 02/03/2000 | WO2000005485A1 Method and apparatus for conveying fluids, particularly useful with respect to oil wells |
| 02/03/2000 | WO2000005484A1 Apparatus and method for open hole gravel packing |
| 02/03/2000 | WO2000005483A1 Connection of tubulars using a top drive |
| 02/03/2000 | WO2000005302A1 Composite proppant, composite filtration media and methods for making and using same |
| 02/03/2000 | WO1999066169A3 Device related to risers |
| 02/03/2000 | WO1999060244A9 Multiple lateral hydraulic drilling apparatus and method |
| 02/03/2000 | WO1999059002A3 System and process for optimizing gravity gradiometer measurements |
| 02/03/2000 | CA2338730A1 Method and apparatus for conveying fluids, particularly useful with respect to oil wells |
| 02/02/2000 | EP0976853A1 Method for removing alkaline earth metal sulfate scale from a boiler or heat exchanger with use of sonic energy |
| 02/02/2000 | EP0975992A1 Pressure impulse telemetry apparatus and method |
| 02/02/2000 | CN2361829Y Production tree for pumping well |
| 02/01/2000 | US6021095 Method and apparatus for remote control of wellbore end devices |
| 02/01/2000 | US6019583 Reverse moineau motor |
| 02/01/2000 | US6019174 Method and apparatus for producing and shipping hydrocarbons offshore |
| 02/01/2000 | US6019172 Flameless combustor |
| 02/01/2000 | CA2032131C In situ soil decontamination method and apparatus |
| 02/01/2000 | CA2030535C Method of decontaminating earth and/or natural gas processing equipment |
| 01/29/2000 | CA2279074A1 Hydraulic tubing punch and method of use |
| 01/27/2000 | WO2000004271A1 Hydraulic equipment for expanding tubular elements in wells |
| 01/27/2000 | WO2000004269A2 Subsea wellbore drilling system for reducing bottom hole pressure |
| 01/27/2000 | WO2000003600A2 Improved tubing handling for subsea oilfield tubing operations |
| 01/27/2000 | DE19849337A1 Process for transporting natural gas from gas hydrate beds uses methanol, preferably introduced through borehole, to form transportable mixture from which natural gas and methanol are recovered |
| 01/26/2000 | EP0974731A2 Method and apparatus for solution mining in an inclined reservoir |
| 01/26/2000 | EP0974066A1 High impact communication and control system |
| 01/26/2000 | EP0840834A4 Apparatus and process for drilling and completing multiple wells |
| 01/26/2000 | EP0772696B1 Method for removing alkaline sulfate scale |
| 01/26/2000 | CN2360794Y Horizontal gas dual-layer coiled pipe boiler |
| 01/26/2000 | CN2360603Y Well petroleum filter |
| 01/26/2000 | CN2360602Y Corrosion-proof heat resistance and pressure resistance sand filtering pipe |
| 01/26/2000 | CN2360601Y Intermittent control circuit of fall automatic control instrument for mechanical producing well |
| 01/25/2000 | USRE36525 Spoolable flexible hydraulically set, straight pull release well packer |
| 01/25/2000 | US6017456 Downhole fluid separation system |
| 01/25/2000 | US6017198 Submersible well pumping system |
| 01/25/2000 | US6016873 Hydrologic cells for the exploitation of hydrocarbons from carbonaceous formations |
| 01/25/2000 | US6016868 Production of synthetic crude oil from heavy hydrocarbons recovered by in situ hydrovisbreaking |
| 01/25/2000 | US6016867 Upgrading and recovery of heavy crude oils and natural bitumens by in situ hydrovisbreaking |
| 01/23/2000 | CA2278359A1 Inter-tandem pump intake |
| 01/20/2000 | WO2000003269A1 Semblance processing for an acoustic measurement-while-drilling system for imaging of formation boundaries |
| 01/20/2000 | WO2000003119A1 Combination side pocket mandrel flow measurement and control assembly |
| 01/20/2000 | WO2000003118A1 A method and apparatus for producing an oil reservoir |
| 01/20/2000 | WO2000003117A2 Full bore gun system |
| 01/20/2000 | WO2000003112A1 Floating spar for supporting production risers |
| 01/20/2000 | WO1997037102A3 Downhole flow control devices |
| 01/20/2000 | CA2330795A1 Full bore gun system |
| 01/19/2000 | EP0971776A1 Process and device for recovering and treating of aqueous solutions |
| 01/19/2000 | EP0840835A4 Improvements in deep well pumping apparatus |
| 01/19/2000 | CN2359463Y Well deep injection deviscosity agent mining device |
| 01/19/2000 | CN2359462Y Well liquid level stirring apparatus |
| 01/19/2000 | CN1241676A Mirabilite exploiting water-dissolution process with two wells communicated by horizontal hole |
| 01/18/2000 | US6015015 Insulated and/or concentric coiled tubing |
| 01/18/2000 | US6015012 In-situ polymerization method and apparatus to seal a junction between a lateral and a main wellbore |
| 01/18/2000 | US6015011 Downhole hydrocarbon separator and method |
| 01/18/2000 | US6015010 Dual tubing pump for stimulation of oil-bearing formations |
| 01/18/2000 | US6014933 Downhole charge carrier |
| 01/18/2000 | CA2060144C Apparatus for gravel packing a well |
| 01/13/2000 | WO2000001926A1 Method and tool for fracturing an underground formation |
| 01/13/2000 | WO2000001925A1 Method and apparatus for commingling and producing fluids from multiple production reservoirs |
| 01/13/2000 | WO2000001924A1 Apparatus and method for perforating and stimulating a subterranean formation |
| 01/13/2000 | WO2000001923A1 Wellhead templates |
| 01/13/2000 | WO2000001922A1 Flying lead workover interface system |
| 01/13/2000 | WO2000001920A1 Device for fitting an oil pipe stiffening sleeve on a support structure |
| 01/13/2000 | WO2000001894A1 Well riser lateral restraint and installation system for offshore platform |
| 01/13/2000 | DE19831234A1 Verfahren und Vorrichtung zur Aussolung geneigter Lagerstätten Method and apparatus for brining inclined deposits |
| 01/13/2000 | CA2336414A1 Apparatus and method for perforating and stimulating a subterranean formation |
| 01/12/2000 | EP0656973B1 Method for in-situ treatment of landfill waste and contaminated soil |
| 01/12/2000 | CN2358225Y Practical wireless cycle monitoring system for working condition of oil-producing machine |
| 01/12/2000 | CN2358224Y Offset pestle type perforating bullet |
| 01/12/2000 | CN2358223Y Following secondary explosive oil-gas well perforating bullet |
| 01/12/2000 | CN1241238A Method for stabilizing gas flow in water-bearing natural gas deposits or reservoirs |
| 01/12/2000 | CN1240873A Water filter for deep water well |
| 01/12/2000 | CN1240795A Heat-resistant salt-resistant thickening agent of copolymer |
| 01/11/2000 | US6012530 Method and apparatus for producing and shipping hydrocarbons offshore |
| 01/11/2000 | US6012526 Method for sealing the junctions in multilateral wells |
| 01/11/2000 | US6012525 Single-trip perforating gun assembly and method |
| 01/11/2000 | US6012523 Downhole apparatus and method for expanding a tubing |
| 01/11/2000 | US6012522 Deformable well screen |
| 01/11/2000 | US6012521 Downhole pressure wave generator and method for use thereof |
| 01/11/2000 | US6012520 Hydrocarbon recovery methods by creating high-permeability webs |
| 01/11/2000 | US6012517 Treating non-naturally occurring subsurface soil contaminants with pneumatic injection of dry media |
| 01/11/2000 | US6012516 Deviated borehole drilling assembly |