| 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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| 07/15/1986 | US4600058 Equipment insert and method |
| 07/15/1986 | CA1207828A1 Single well stimulation for the recovery of liquid hydrocarbons from subsurface formations |
| 07/15/1986 | CA1207517A1 Water control well treating solution and method |
| 07/09/1986 | EP0186969A1 Rotating fluid manifold |
| 07/09/1986 | EP0186952A1 Method for drilling deviated wellbores |
| 07/08/1986 | US4599182 Shrinkage and stabilization of clays improved permeability |
| 07/08/1986 | US4598776 Method and apparatus for firing multisection perforating guns |
| 07/08/1986 | US4598775 Perforating gun charge carrier improvements |
| 07/08/1986 | US4598774 Setting tool with retractable torque fingers |
| 07/08/1986 | US4598772 Continuous injectionof nitrogen or carbon dioxide |
| 07/08/1986 | US4598771 Method and apparatus for firing a perforating gun and simultaneously recording the downhole pressure |
| 07/08/1986 | US4598770 Thermal recovery method for viscous oil |
| 07/08/1986 | CA1207478A1 Self-inverting water-in-oil emulsions of water- soluble polymers |
| 07/08/1986 | CA1207448A1 Method and apparatus for weighing a sucker-rod pumped well |
| 07/08/1986 | CA1207226A1 Downhole pump with safety valve |
| 07/03/1986 | WO1986003696A1 Apparatus for handling mixtures |
| 07/02/1986 | EP0186317A1 Casing high angle wellbores |
| 07/02/1986 | CN85105344A Water-base zirconium-gel cleavage liquor |
| 07/02/1986 | CA1206870A Valve |
| 07/02/1986 | CA1206868A Well gravel packing method |
| 07/02/1986 | CA1206739A Stabilizing polysaccharide solutions for tertiary oil recovery at elevated temperature with borohydride |
| 07/01/1986 | US4597991 Coated particles |
| 07/01/1986 | US4597874 Treatment of oil well production |
| 07/01/1986 | US4597448 Subsea wellhead system |
| 07/01/1986 | US4597444 Method for excavating a large diameter shaft into the earth and at least partially through an oil-bearing formation |
| 07/01/1986 | US4597443 Viscous oil recovery method |
| 07/01/1986 | US4597442 Reservoir preflushing process for increasing the rate of surfactant transport in displacing oil with injected steam and steam-foaming surfactant |
| 07/01/1986 | US4597441 Superheated steam |
| 07/01/1986 | US4597437 Portable production package for oil and gas wells |
| 06/24/1986 | US4596586 Separator for oil and gas, and separation process |
| 06/24/1986 | US4596516 Gas lift apparatus having condition responsive gas inlet valve |
| 06/24/1986 | CA1206411A1 Oil recovery by in situ combustion |
| 06/24/1986 | CA1206410A1 Oil recovery by waterflooding |
| 06/24/1986 | CA1206409A1 Process for increasing the water discharge of water delivering drilled wells |
| 06/24/1986 | CA1206408A1 Single-wire selective perforation system having firing safeguards |
| 06/19/1986 | WO1986003544A2 Apparatus for placing and removing well flow control devices |
| 06/17/1986 | US4595513 Oil base well treating fluids thickened by block copolymers |
| 06/17/1986 | US4595239 Oil recovery mining apparatus |
| 06/17/1986 | US4595057 Parallel string method for multiple string, thermal fluid injection |
| 06/17/1986 | US4595056 Withdrawin& off-gas through product withdrawal drift |
| 06/11/1986 | EP0184377A2 Borehole devices disarmed by fluid pressure |
| 06/10/1986 | US4594200 Compositions for increasing hydrocarbon production from subterranean formations |
| 06/10/1986 | US4593937 Device for connecting and disconnecting a tubular pipe movable inside a fixed tubular pipe |
| 06/10/1986 | US4593763 Carbon dioxide well injection method |
| 06/10/1986 | US4593762 High polymer solutions having an increased drag and process for their manufacture |
| 06/10/1986 | US4593761 Miscible oil flooding at controlled velocities |
| 06/10/1986 | US4593760 Removal of volatile contaminants from the vadose zone of contaminated ground |
| 06/10/1986 | US4593759 Method for the recovery of viscous oil utilizing mixtures of steam and oxygen |
| 06/10/1986 | CA1205739A1 Geothermal well head and actuator assembly |
| 06/05/1986 | WO1986003253A1 A method for establishing a connection from the sea bed to a tunnel positioned below |
| 06/05/1986 | WO1986003252A1 Three phase separator |
| 06/05/1986 | WO1986003251A1 A process for increasing the yield of oil reservoirs |
| 06/05/1986 | WO1986003250A1 Method and means to pump a well |
| 06/05/1986 | WO1986003143A1 Cyclone separator |
| 06/04/1986 | EP0183537A2 Borehole device actuated by fluid pressure |
| 06/03/1986 | US4592427 Through tubing progressing cavity pump |
| 06/03/1986 | US4592424 Return flow of injection fluid back into well |
| 06/03/1986 | US4592423 In-situ radiofrequency |
| 06/03/1986 | US4592380 Gas lift valve |
| 06/03/1986 | US4592104 Hospital bed |
| 06/03/1986 | CA1205327A1 Oil well pump drive |
| 05/28/1986 | EP0182661A2 Methods of loading a borehole with a emulsion slurry blasting composition |
| 05/28/1986 | EP0182143A2 Apparatus for controlling the discharge of gas from a garbage dump and process therefor |
| 05/27/1986 | US4591295 Curved conductor well template |
| 05/27/1986 | US4591292 Method for connecting a flowline to a subsea structure |
| 05/27/1986 | US4590997 Extending fractures in underground formations |
| 05/27/1986 | CA1205009A1 Tapered steam injection |
| 05/27/1986 | CA1205007A1 Solvent stimulation in heavy oil wells producing a large fraction of water |
| 05/27/1986 | CA1204992A1 Conduct pipe covered with electrically insulating material |
| 05/21/1986 | EP0181672A1 Method for producing methane and hydrocarbons by the underground hydrogenation of coal |
| 05/20/1986 | US4589802 Slip assembly for subsea template |
| 05/20/1986 | US4589494 Method of controlling the removal of flowable material from a well |
| 05/20/1986 | US4589493 Subsea wellhead production apparatus with a retrievable subsea choke |
| 05/20/1986 | US4589491 Cold fluid enhancement of hydraulic fracture well linkage |
| 05/20/1986 | US4589490 Well bore recompletion |
| 05/20/1986 | US4589488 Method for recovery of mineral resources |
| 05/20/1986 | US4589487 Enhanced oil recovery of heavy oils by first injecting an aqueous solution of a carbonate or bicarbonate salt and then a driving fluid |
| 05/20/1986 | US4589486 Carbon dioxide flooding with a premixed transition zone of carbon dioxide and crude oil components |
| 05/20/1986 | US4589434 Method and apparatus to prevent hydrate formation in full wellstream pipelines |
| 05/20/1986 | US4589276 Method and apparatus for determining effectiveness of foamant in porous media |
| 05/20/1986 | CA1204661A1 Apparatus for the in-situ definition relating to the efficiency of a treatment during its application to a hydrocarbon well under production |
| 05/20/1986 | CA1204660A1 Apparatus and method for hydraulically mining an unconsolidated mineral formation |
| 05/20/1986 | CA1204586A2 Low fluid loss heavy brines containing hydroxyethyl cellulose |
| 05/14/1986 | EP0181210A2 Stimulation of biooxidation processes in subterranean formations |
| 05/13/1986 | US4588509 Proppant concentrator |
| 05/13/1986 | US4588506 Stimulation of biooxidation processes in subterranean formations |
| 05/13/1986 | US4588326 Subsea pipeline connection |
| 05/13/1986 | CA1204381A1 Method of fracturing a subterranean formation |
| 05/07/1986 | EP0180520A2 Firing system for tubing conveyed perforating gun |
| 05/06/1986 | US4587423 Method for gravel pack evaluation |
| 05/06/1986 | US4586752 Solution mining process |
| 05/06/1986 | CA1204167A1 Apparatus and method for in situ controlled heat processing of hydrocarbonaceous formations |
| 05/06/1986 | CA1204053A1 Drill stem test and perforating system |
| 05/06/1986 | CA1204052A1 Well completion method and apparatus |
| 04/30/1986 | EP0179586A2 Detonating assembly for tubing conveyed perforating gun |
| 04/29/1986 | US4585065 Absorption on surfaces to reduce wetting of a perfluoro==substituted sulfonate |
| 04/29/1986 | US4585064 High strength particulates |
| 04/29/1986 | US4585060 Fluid sampling apparatus |
| 04/29/1986 | CA1203749A1 Well pump |
| 04/24/1986 | WO1986002396A1 Improved penetration conductor pipe drive shoe |