| 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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| 09/17/1986 | EP0112350B1 Method for manufacturing a backing material for drill holes |
| 09/16/1986 | US4611950 Method and apparatus for removing contaminants from soil |
| 09/16/1986 | US4611856 Two-level, horizontal free face mining system for in situ oil shale retorts |
| 09/16/1986 | US4611855 Method for collecting gas from subterranean formations |
| 09/16/1986 | US4611660 Wireline conveyed firing mechanism for well perforating gun |
| 09/12/1986 | WO1986005221A1 Method for natural reduction of some injurious substances in upper suboil water magazines |
| 09/10/1986 | EP0194039A1 Manipulative device |
| 09/10/1986 | EP0193716A2 Adsorptive separation of methane and carbon dioxide gas mixtures |
| 09/10/1986 | CN85203763U Steam sampler for oil well |
| 09/10/1986 | CN85107897A Firing system for tubing conveyed perforating gun |
| 09/09/1986 | US4610795 Peroxygen breaker systems for well completion fluids |
| 09/09/1986 | US4610793 Oil extraction method |
| 09/09/1986 | US4610788 Oil/water separating system |
| 09/09/1986 | US4610312 Redundant firing mechanism for a well perforating gun |
| 09/09/1986 | US4610304 Heavy oil recovery by high velocity non-condensible gas injection |
| 09/09/1986 | US4610303 Method of underground gasification of a series of gently dipping and inclined coal seams |
| 09/09/1986 | US4610301 Infill drilling pattern |
| 09/09/1986 | CA1211045A1 Subsea wellhead connection assembly |
| 09/09/1986 | CA1211043A1 Differential vent and bar actuated circulating valve and method |
| 09/09/1986 | CA1211041A1 Well-cementing stage collar |
| 09/09/1986 | CA1211040A1 Gravity oriented perforating gun for use in slanted boreholes |
| 09/09/1986 | CA1211039A1 Well with sand control stimulant deflector |
| 09/09/1986 | CA1210929A1 Composition and method for servicing wellbores |
| 09/03/1986 | EP0193369A2 Polymer article and its use for controlled introduction of reagent into a fluid |
| 09/03/1986 | CN85105388A Underground mining method for fluid mineral deposit |
| 09/03/1986 | CN85101161A 石油采收组合剂 Oil recovery agent combination |
| 09/02/1986 | US4609304 Apparatus for enabling a self-contained submersible module including a length of conduit for connection to a collector to be repetitively put into place and removed |
| 09/02/1986 | US4609057 Shaped charge carrier |
| 09/02/1986 | US4609044 Ion exchanging, salt formation, petroleum sulfonates |
| 09/02/1986 | US4609043 Supercritical, flow control, water insoluble polymer, entrainment |
| 09/02/1986 | CA1210687A1 Viscous oil recovery method |
| 09/02/1986 | CA1210686A1 Treating wells with non-buoyant ball sealers |
| 08/27/1986 | EP0192558A1 Apparatus for positioning a tool or instrument in a flow line, particularly a down-hole autonomous hydraulic pump operating through the tubing in a well |
| 08/27/1986 | EP0192400A2 Gravel-packing a well |
| 08/27/1986 | EP0192399A2 Well treatment apparatus |
| 08/27/1986 | EP0192398A2 Liner setting device for wells |
| 08/27/1986 | CN86101283A Manipulative device |
| 08/27/1986 | CN85109021A Method and apparatus for separating the components of a wellstream |
| 08/26/1986 | US4608204 Neutralization of alkyl(toluene-or xylene) sulfonic acid with sodium hydroxide in pressence of sodium chloride |
| 08/26/1986 | US4608163 Apparatus for purification of contaminated groundwater |
| 08/26/1986 | US4607999 De-watering pump |
| 08/26/1986 | US4607888 Method of recovering hydrocarbon using mining assisted methods |
| 08/26/1986 | US4607700 Alpha-olefin sulfonate dimer surfactant cyclic steam stimulation process for recovering hydrocarbons from a subterranean formation |
| 08/26/1986 | US4607699 Method for treating a tar sand reservoir to enhance petroleum production by cyclic steam stimulation |
| 08/26/1986 | US4607697 High strength |
| 08/26/1986 | US4607695 High sweep efficiency steam drive oil recovery method |
| 08/26/1986 | CA1210386A1 Apparatus for mixing solids and fluids |
| 08/26/1986 | CA1210322A1 In situ formation of sand control medium |
| 08/26/1986 | CA1210320A1 Fracturing fluids containing bouyant inorganic diverting agent and method of use in hydraulic fracturing of subterranean formations |
| 08/26/1986 | CA1210231A1 Method of acidizing wells using gelled acids |
| 08/22/1986 | EP0124580A4 Fine and coarse servo system for access and tracking on an optical disk. |
| 08/19/1986 | US4606673 Spar buoy construction having production and oil storage facilities and method of operation |
| 08/19/1986 | US4606410 Subsurface safety system |
| 08/19/1986 | US4606409 Fluid pressure actuated firing mechanism for a well perforating gun |
| 08/19/1986 | US4606408 Method and apparatus for gravel-packing a well |
| 08/19/1986 | CA1209901A1 Foam gravel packing in highly deviated wells |
| 08/14/1986 | WO1986004636A1 Method and apparatus for data transmission in a well bore containing a conductive fluid |
| 08/14/1986 | WO1986004635A1 Method and means for obtaining data representing a parameter of fluid flowing through a down hole side of an oil or gas well bore |
| 08/14/1986 | WO1986004537A1 Manipulative device |
| 08/13/1986 | EP0190529A1 Remotely controlled flow-responsive actuating device, in particular for actuating a stabilizer in a drill string |
| 08/13/1986 | EP0190286A1 Hollow microspheres made from dispersed particle compositions and methods and apparatus for producing them. |
| 08/12/1986 | US4605076 Method for forming boreholes |
| 08/12/1986 | US4605074 Method and apparatus for controlling borehole pressure in perforating wells |
| 08/12/1986 | US4605069 Method for producing heavy, viscous crude oil |
| 08/12/1986 | US4605068 Well treating composition and method |
| 08/12/1986 | US4605066 Oil recovery method employing carbon dioxide flooding with improved sweep efficiency |
| 08/12/1986 | CA1209629A1 Conduction heating of hydrocarbonaceous formations |
| 08/12/1986 | CA1209467A1 Steam drive oil recovery method utilizing a downhole steam generator |
| 08/12/1986 | CA1209466A1 Polymer flow control apparatus and method |
| 08/12/1986 | CA1209462A1 Method and apparatus for conducting wireline operations in a borehole |
| 08/06/1986 | EP0189959A2 Process for the preparation of polysaccharide aqueous solutions |
| 08/06/1986 | CN85101314A Process and compsn. for oil recovery |
| 08/05/1986 | US4604196 Stabilization; ocean or ship platforms |
| 08/05/1986 | US4603743 Hydraulic/mechanical setting tool and liner hanger |
| 08/05/1986 | US4603735 Down the hole reverse up flow jet pump |
| 08/05/1986 | CA1209031A1 In-situ recovery of viscous hydrocarbonaceous crude oil |
| 08/05/1986 | CA1209030A1 Pressure activated well perforating technique |
| 08/05/1986 | CA1208977A1 Oil well pump |
| 07/31/1986 | WO1986003544A3 Apparatus for placing and removing well flow control devices |
| 07/30/1986 | EP0189042A2 Ether amine oxides, process for their preparation and their use as surfactants in the tertiary recovery of petroleum oil |
| 07/29/1986 | US4602920 Process for inhibiting hydrates with inorganic electrolytes while producing moist CO2 from subterranean reservoirs |
| 07/29/1986 | US4602820 Recovering metal values from geothermal brine |
| 07/29/1986 | CA1208544A1 Liner hanger with channel guides |
| 07/29/1986 | CA1208541A1 Method of underground gasification of coal seam |
| 07/29/1986 | CA1208540A1 Apparatus and method for in situ controlled heat processing of hydrocarbonaceous formations with a controlled parameter line |
| 07/29/1986 | CA1208539A1 Solvent stimulation of heavy oil reservoirs |
| 07/29/1986 | CA1208538A1 Self-reversing hydraulic control mechanism |
| 07/29/1986 | CA1208537A1 Well completion method |
| 07/29/1986 | CA1208536A1 Mechanically initiated tubing conveyed perforator system |
| 07/22/1986 | US4601343 PBR with latching system for tubing |
| 07/22/1986 | US4601338 Foam and impedance-guided steam injection |
| 07/22/1986 | US4601337 Foam drive oil displacement with outflow pressure cycling |
| 07/22/1986 | US4601336 Comparing flow capabilities of different surfactants |
| 07/22/1986 | US4601335 Well device |
| 07/22/1986 | CA1208122A1 Process for recovering petroleum from formations containing viscous crude or tar |
| 07/22/1986 | CA1208105A1 Flow rate control and metering means for shear- sensitive liquids |
| 07/15/1986 | US4600516 Enhanced oil recovery |
| 07/15/1986 | US4600508 Contamination removal system |
| 07/15/1986 | US4600339 Shield for protecting a well head and functional modules of an under sea station |
| 07/15/1986 | US4600061 In-shaft drilling method for recovery of gas from subterranean formations |