| 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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| 09/15/1992 | US5147559 Controlling cone of depression in a well by microprocessor control of modulating valve |
| 09/15/1992 | US5147535 Arrangement for driving out of volatile impurities from ground water using vibrations |
| 09/15/1992 | US5147530 Well water removal and treatment system |
| 09/15/1992 | US5147185 Pump apparatus for fluid sampling and collection, and the like |
| 09/15/1992 | US5147184 Top inlet apparatus |
| 09/15/1992 | US5147148 Heave-restrained platform and drilling system |
| 09/15/1992 | US5147147 Water miscible liquid is added to sump, and then the mixture formed in this way is extracted from the cavity |
| 09/15/1992 | US5147111 Cavity induced stimulation method of coal degasification wells |
| 09/15/1992 | US5146998 Apparatus and method for underground sampling |
| 09/15/1992 | US5146991 Method for operating a well installation |
| 09/15/1992 | US5146990 Anchoring structure for marine riser assembly |
| 09/15/1992 | US5146987 Method and apparatus for controlling the flow of crude oil from the earth |
| 09/15/1992 | CA1307460C Plugging apparatus for a gravel packer |
| 09/15/1992 | CA1307458C Sand consolidation methods |
| 09/12/1992 | WO1992015769A1 Enhanced liquid hydrocarbon recovery process |
| 09/09/1992 | CN2115462U Parameter monitor for steam injection boiler of oil field |
| 09/09/1992 | CN1064338A Method for deoxidizing water to be filled in oil field |
| 09/09/1992 | CN1018191B Removable press-fracturing bridge plug |
| 09/08/1992 | US5145289 Reduced J-tube riser pull force |
| 09/08/1992 | US5145015 Well point |
| 09/08/1992 | US5145013 Sand control with resin and explosive |
| 09/08/1992 | US5145012 Injecting with compound capable of gelation and gas precursor |
| 09/08/1992 | US5145004 Multiple gravel pack well completions |
| 09/08/1992 | US5145003 Petroleum recovery by viscosity reduction and catalytic hydrogenation |
| 09/08/1992 | US5145002 Recovery of heavy crude oil or tar sand oil or bitumen from underground formations |
| 09/08/1992 | CA1307198C Process for the prevention of water inflow in a oil/gaz production well |
| 09/07/1992 | WO1992015511A1 Method for providing a user with a gas supply |
| 09/03/1992 | WO1992014929A1 Pump apparatus for fluid sampling and collection, and the like |
| 09/02/1992 | CN2114654U Water cod treatment filter for oil and gas field |
| 09/01/1992 | US5143606 Arrangement for cleaning contaminated ground water |
| 09/01/1992 | US5143156 Enhanced oil recovery using organic vapors |
| 08/27/1992 | DE4135491A1 Pressure shock damper for pipes in bore hole - uses air chamber above submerged pump |
| 08/26/1992 | EP0500206A2 Insulating composition |
| 08/26/1992 | EP0500165A1 Dart launching system for sub-sea cementing head or sub-sea tool for oil wells |
| 08/26/1992 | EP0407408B1 Process and installation for recuperation of energy from oil wells |
| 08/26/1992 | CN2114028U Gas generator for high energy gas fracturing |
| 08/26/1992 | CN2114027U Long-stroke beam-pumping unit |
| 08/26/1992 | CN1018011B Water-base fracturing fluid for treating subterranean formations and gel-breaking thereof |
| 08/25/1992 | US5142608 Horizontal steam generator for oil wells |
| 08/25/1992 | US5141057 Safety sleeve for a borehole communicating with an underground reserve of fluid under pressure, and associated safety system, and an associated borehole operating method |
| 08/25/1992 | US5141055 Method and apparatus for controlling the mass flow rate of steam in steam distribution systems |
| 08/25/1992 | US5141054 Limited entry steam heating method for uniform heat distribution |
| 08/25/1992 | CA1306669C Method and apparatus for retrieving a running tool/guideframe assembly |
| 08/20/1992 | WO1992014062A1 Compressor system in a subsea station for transporting a well stream |
| 08/20/1992 | WO1992014061A1 A method of operating a compressor system in a subsea station for transporting a well stream, and a compressor system in a subsea station for transporting a well stream |
| 08/20/1992 | WO1992014032A1 Method and compositions for fracturing subterranean formations |
| 08/20/1992 | WO1992014030A1 A method of testing a well stream and a system for testing a well stream, particularly on the seabed |
| 08/20/1992 | CA2061357A1 Profile control in enhanced oil recovery |
| 08/19/1992 | EP0499547A1 Underwater wellhead |
| 08/19/1992 | CN2113339U Filter sand device by peach shell and resin |
| 08/19/1992 | CN1063710A Insulating composition |
| 08/19/1992 | CA2061320A1 Dart launching system for sub-sea cementing head or sub-sea tool for oil wells |
| 08/18/1992 | US5139400 Progressive cavity drive train |
| 08/18/1992 | US5139312 Method and apparatus removing a mineable product from an underground seam |
| 08/18/1992 | US5139090 Tubing rotator with downhole tubing swivel |
| 08/18/1992 | US5139088 Method of inhibiting asphalt precipitation in an oil production well |
| 08/18/1992 | US5139087 Method for ensuring injectivity of polymer solutions |
| 08/16/1992 | CA2036436A1 Corrosion inhibition using mercury intensifiers |
| 08/12/1992 | EP0498676A2 Improved process and apparatus for groundwater extraction using a high vacuum process |
| 08/12/1992 | CN2112685U Blocking device fixed on oil pump under well |
| 08/12/1992 | CN2112684U Long stroke platform drum oil pump |
| 08/12/1992 | CN1063527A Technology and controller for pressure splitting with high energy gas |
| 08/11/1992 | US5137088 Travelling disc valve apparatus |
| 08/06/1992 | WO1992013172A1 Method of microbial enhanced oil recovery |
| 08/05/1992 | EP0497055A1 High density particulate slurries for well completion |
| 08/05/1992 | CN1063333A Phase-tuned two-stage balancing lever oil-pumping machine |
| 08/05/1992 | CN1063332A Differential balancing lever oil-pumping machine of same well |
| 08/04/1992 | US5135656 Process for removing water soluble organic compounds from produced water |
| 08/04/1992 | US5135366 Selective valve to pass fluids |
| 08/04/1992 | US5135286 Residue recovery process and apparatus |
| 08/04/1992 | US5135053 Treatment of well tubulars with gelatin |
| 08/04/1992 | US5135051 Perforation cleaning tool |
| 08/04/1992 | CA1305856C2 Well bore measurement tool |
| 08/01/1992 | CA2060334A1 Rf in situ heating of heavy oil in combination with steam flooding |
| 07/29/1992 | EP0495833A1 Hydraulically actuated releasable connector and method for setting oil well liner |
| 07/29/1992 | CN2111362U Mixed light hydrocarbon recovering device for pilot oil recovery |
| 07/29/1992 | CN2111361U Beam well up sliding balance weight |
| 07/29/1992 | CN1063082A Method and system for conducting offshore well operations |
| 07/28/1992 | US5134176 Crosslinked polyvinyl amine copolymer gels for use under harsh reservoir conditions |
| 07/28/1992 | US5133625 Method and apparatus for subsurface bioremediation |
| 07/28/1992 | US5133411 Method and device for stimulating a subterranean zone through the controlled injection of a fluid coming from a neighbouring zone which is connected to the subterranean zone by a drain |
| 07/28/1992 | US5133410 Method and device for stimulating production of a subterranean zone of injection of a fluid from a neighboring zone via fracture made from a deflected drain drilled in an intermediate layer separating the zones |
| 07/28/1992 | US5133407 Fluid injection and production apparatus and method |
| 07/28/1992 | US5133406 Exhaust gases from fuel cell power system, improved desorption of methane from suterranean coal |
| 07/28/1992 | CA1305659C Remedial treatment for coal degas wells |
| 07/28/1992 | CA1305658C Matched particle/liquid density well packing technique |
| 07/28/1992 | CA1305645C Valve mounting and block manifold |
| 07/26/1992 | CA2059803A1 Gas lift valve utilizing a diaphragm pilot |
| 07/24/1992 | CA2054253A1 Method and apparatus for recovering intractable petroleum from subterranean formations |
| 07/23/1992 | WO1992012326A1 Method for controlling rock permeability of near-face section of well |
| 07/23/1992 | WO1992012325A1 Stable suspension and use thereof for recovering hydrocarbons |
| 07/22/1992 | EP0495437A2 Hydraulic packoff and casing hanger installation tool |
| 07/22/1992 | CN2110710U Auto-boost locking device for polishing rod |
| 07/22/1992 | CN1062949A Method for selectively reducing subterranean water permeability |
| 07/22/1992 | CN1017523B Selid propping agent and making method thereof |
| 07/21/1992 | US5132904 Remote well head controller with secure communications port |
| 07/21/1992 | US5132029 Gellable mixture of partially hydrolyzed polyacrylamide, chromium salt crosslinking agent, acid, and water |
| 07/21/1992 | US5132025 Oil well drilling mud and brine recycling system |
| 07/21/1992 | US5132011 Oil, water and gas mixture separator |
| 07/21/1992 | US5131692 Pipe connector with threaded seal in nonthreaded cavity |