| 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) |
|---|
| 02/10/1998 | US5715891 Method for isolating multi-lateral well completions while maintaining selective drainhole re-entry access |
| 02/05/1998 | WO1998004807A1 Single well vapor extraction process |
| 02/05/1998 | DE19724627A1 Warm subterranean water extraction method for geothermally heated water |
| 02/05/1998 | DE19631520A1 Solar energy is used in a solution mining process in tropical or sub-tropical regions to produce a sol |
| 02/05/1998 | CA2232403A1 Single well vapor extraction process |
| 02/04/1998 | CN2273769Y Power plant built-in and pump injection type pressure fracture and acidizing ball-off apparatus |
| 02/03/1998 | US5713416 Methods of decomposing gas hydrates |
| 02/03/1998 | CA2089800C Method and apparatus for improved oil recovery of oil and bitumen using dual completion cyclic steam stimulation |
| 01/29/1998 | WO1997041330A3 Multi-lateral wellbore system and method for forming same |
| 01/28/1998 | CN1171484A Sand filter of metallic fibres |
| 01/27/1998 | US5711879 Radial-flow filter and method of manufacture |
| 01/27/1998 | US5711374 Method for cyclone separation of oil and water and an apparatus for separating of oil and water |
| 01/27/1998 | US5711373 Method for recovering a hydrocarbon liquid from a subterranean formation |
| 01/27/1998 | US5711371 Down hole submersible pump |
| 01/27/1998 | US5711338 Regulating drum for multiphase effluents and associated draw-off means and method for operating same |
| 01/27/1998 | CA2151289C Treatment of lead sulphide bearing minerals |
| 01/27/1998 | CA2005479C Process for recovering oil |
| 01/22/1998 | WO1998002638A1 Apparatus and method for performing imaging and downhole operations at work site in wellbores |
| 01/22/1998 | WO1998002637A1 Downhole cyclone separation |
| 01/22/1998 | WO1998002635A1 Method for accelerating production-c-i-p |
| 01/22/1998 | WO1998002600A1 Method for cleaning capillary and porous media |
| 01/21/1998 | EP0819834A1 Method for making a cavity in a thin-walled salt mine |
| 01/21/1998 | EP0819833A2 Particulate-containing well treatment fluid |
| 01/21/1998 | EP0819832A2 Drilling and pumping device and use of hydrodynamic retardersto compensate for reactive torque introduced by the driving system |
| 01/21/1998 | EP0819831A1 Screen for use in a well |
| 01/21/1998 | EP0819829A2 Apparatus for completing a subterranean well and method of using same |
| 01/21/1998 | EP0819207A1 Method for improved water well production |
| 01/21/1998 | EP0735919B1 Solvent soaps and methods employing same |
| 01/21/1998 | CN2272945Y Pressure relief device for oil and gas well |
| 01/21/1998 | CN2272941Y Borehole thermal recovery compensator |
| 01/21/1998 | CN1170807A Filter for well |
| 01/20/1998 | US5710717 Method for predicting and adjusting the distribution of two-phase fluids flowing through a piping network |
| 01/20/1998 | US5709505 Vertical isolation system for two-phase vacuum extraction of soil and groundwater contaminants |
| 01/20/1998 | US5709265 Wellbore window formation |
| 01/20/1998 | CA2135719C Nitrogen/carbon dioxide combination fracture treatment |
| 01/19/1998 | CA2210866A1 Process for excavating a cavity in a thin salt layer |
| 01/18/1998 | CA2210598A1 Sand control screen having increased erosion and collapse resistance |
| 01/15/1998 | CA2209958A1 Apparatus for completing a subterranean well and associated methods of using same |
| 01/14/1998 | EP0818603A1 Oil pumping method and facility |
| 01/13/1998 | US5708220 Liquid sampling device and method |
| 01/13/1998 | US5707427 Separation of gas, oil and water in undersea pipeline |
| 01/13/1998 | US5707221 Method of plural zone pumping utilizing controlled individual pump inlet in each zone |
| 01/13/1998 | US5707214 Nozzle-venturi gas lift flow control device and method for improving production rate, lift efficiency, and stability of gas lift wells |
| 01/13/1998 | US5706897 Drilling, production, test, and oil storage caisson |
| 01/13/1998 | US5706896 Method and apparatus for the remote control and monitoring of production wells |
| 01/13/1998 | US5706892 Downhole tools for production well control |
| 01/13/1998 | US5706891 Gravel pack mandrel system for water-flood operations |
| 01/08/1998 | WO1998000626A1 Method for expanding a steel tubing and well with such a tubing |
| 01/07/1998 | EP0816631A2 Method for the determination of inflow of oil and/or gas into a well |
| 01/07/1998 | EP0815349A1 Hydrocarbon production using multilateral well bores |
| 01/07/1998 | EP0815347A1 Method for measuring of flow and flowmeter |
| 01/07/1998 | EP0815346A1 Flow meter |
| 01/07/1998 | EP0699270A4 Downhole gas-liquid separator for wells |
| 01/07/1998 | EP0695392A4 Stimulation of coalbed methane production |
| 01/07/1998 | EP0657619A4 Process for extracting hydrocarbons from subterranean formations. |
| 01/07/1998 | CN1169502A Method for eliminating effect of gas and water while extracting crude oil |
| 01/07/1998 | CN1169501A Coal-bed gasifying method of gas-injection point backing while changing tube |
| 01/07/1998 | CN1169411A Shaped charge for perforating gun having main body of explosive TATB and sensitive primer |
| 01/06/1998 | US5705076 Purification with filters for oil or nonoil fluids using cloth |
| 01/06/1998 | US5704772 Controller less resilient bladder pump for reduced diameter casing with long cycle |
| 01/06/1998 | US5704426 Zonal isolation method and apparatus |
| 01/06/1998 | CA2120675C Cavern well pressure trap |
| 01/06/1998 | CA2006967C Method for profile control in enhanced oil recovery |
| 01/02/1998 | DE19725996A1 Method for conveying water from vertical water borehole system |
| 12/31/1997 | WO1997049894A1 Method and apparatus for testing, completing and/or maintaining wellbores using a sensor device |
| 12/31/1997 | WO1997049893A1 Method for increasing crude-oil and gas extraction and for drilling in and monitoring field beds |
| 12/31/1997 | CN1168944A Process for separated layer water flooding for oil prodn. |
| 12/30/1997 | US5702206 Offshore support structure method and apparatus |
| 12/30/1997 | US5702205 Steel catenary riser system for marine platform |
| 12/30/1997 | US5701964 Perforating charge carrier assembly and method |
| 12/30/1997 | US5701958 Apparatus for drilling perforations in well casings |
| 12/30/1997 | US5701957 Well perforator isolation apparatus and method |
| 12/29/1997 | EP0772696A4 Method for removing alkaline sulfate scale |
| 12/24/1997 | WO1997048504A1 In-situ thermal desorption of heavy hydrocarbons in vadose zone |
| 12/24/1997 | CN1168711A Apparatus for movement along an underground passage and method using same |
| 12/23/1997 | US5700969 Underground jet perforating using resistive blasting caps |
| 12/23/1997 | US5700968 Perforating gun brake |
| 12/23/1997 | US5699860 Fracture propping agents and methods |
| 12/23/1997 | US5699858 Well pumping system and installation method |
| 12/23/1997 | CA2074010C Surge relief valve |
| 12/18/1997 | WO1997047857A1 Method and equipment for offshore oil production by intermittent gas injection |
| 12/18/1997 | WO1997047856A2 System and method for coupling two mutually mobile assemblies, in particular in submarine installations |
| 12/18/1997 | WO1997047855A1 Method and equipment for offshore oil production with primary gas separation and flow using the injection of high pressure gas |
| 12/18/1997 | WO1997047851A1 Subsea connection |
| 12/17/1997 | EP0636228B1 Compressing combustible gas flowing through a conduit |
| 12/16/1997 | US5698014 Liquid carryover control for spiral gas liquid separator |
| 12/16/1997 | US5697768 Downhole swivel |
| 12/16/1997 | US5697732 System for offshore production of hydrocarbons |
| 12/16/1997 | US5697448 Oil well pumping mechanism providing water removal without lifting |
| 12/16/1997 | US5697446 Method for developing offshore oil fields |
| 12/16/1997 | US5697445 Method and apparatus for selective horizontal well re-entry using retrievable diverter oriented by logging means |
| 12/16/1997 | US5697441 Selective zonal isolation of oil wells |
| 12/16/1997 | CA2029817C Method for improving sustained solids-free production from heavy oil reservoirs |
| 12/12/1997 | CA2207465A1 Filter for subterranean use |
| 12/11/1997 | WO1997046793A1 Wellhead pump control system |
| 12/10/1997 | EP0811749A1 Downhole fluid separation system |
| 12/10/1997 | EP0811748A1 Automatic downhole pump assembly and method for use of the same |
| 12/10/1997 | EP0811110A1 Oil well treatment |
| 12/10/1997 | EP0607426B1 Process for producing highly viscous petroleum products and pumping them further |
| 12/10/1997 | CN2270115Y Cylinder-shaped explosive loading composite perforation fracture device for oil-gas well |