| 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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| 06/21/1993 | CA2084227A1 Recoverable extraction and injection probe for enhanced gradient remediation |
| 06/17/1993 | CA2085437A1 Well screens and screen prepacks |
| 06/17/1993 | CA2057750A1 Process for producing a high strength artificial (cast) stone with high permeability and filter effect |
| 06/16/1993 | CN1073235A Integrated oil field gas injection distribution controller |
| 06/15/1993 | US5219028 Well casing and well casing method |
| 06/15/1993 | US5219026 Acidizing method for gravel packing wells |
| 06/15/1993 | US5219025 Method and apparatus for gravel packing a well through a tubing string |
| 06/15/1993 | US5218986 Pneumatically pressurized water pumping apparatus |
| 06/15/1993 | CA1319098C Downhole pump filter |
| 06/10/1993 | WO1993011338A1 Ultrasonic energy producing device |
| 06/10/1993 | WO1993011307A1 Processes for local ground treatment, especially testing and cleaning polluted ground |
| 06/10/1993 | WO1993011305A1 Device for deploying a barrier structure in a body of water |
| 06/10/1993 | CA2101854A1 Ultrasonic energy producing device |
| 06/09/1993 | EP0545551A2 Multiplexed electrohydraulic control system for an underwater production installation |
| 06/09/1993 | CN2135646Y Numerical controlling water return pertoleum extracting device for high moisture waste oil field |
| 06/09/1993 | CN1072990A Compound bullet for perforation and fracturing |
| 06/09/1993 | CN1021115C Polyalky leneoxyamine catalysts for dialkyl disulfides and/or polysulfides used in dissolving sulfur |
| 06/08/1993 | US5218038 Phenolic resin coated proppants with reduced hydraulic fluid interaction |
| 06/08/1993 | US5217076 Method and apparatus for improved recovery of oil from porous, subsurface deposits (targevcir oricess) |
| 06/08/1993 | US5217072 Device for carrying out interventions in nonflowing deflected producing wells |
| 06/08/1993 | US5217067 Apparatus for increasing flow in oil and other wells |
| 06/08/1993 | CA1318847C Remote connection device and method thereof |
| 06/02/1993 | CN2135061Y Chemicals cover |
| 06/02/1993 | CN2135060Y High-pressure filtering device for oil field water-flooding well |
| 06/02/1993 | CN1072609A Weight-type optimization equipment for separating oil, gas and water |
| 06/02/1993 | CN1021073C Low-speed driving system with stepless speed regulation for beam oil-pumping unit |
| 06/01/1993 | US5215149 Single horizontal well conduction assisted steam drive process for removing viscous hydrocarbonaceous fluids |
| 06/01/1993 | US5215148 Subsurface well pressure actuated and fired apparatus |
| 06/01/1993 | US5215147 Positioning drillable packer in wellbore, adding first resin, hardening, adding second resin |
| 06/01/1993 | US5215146 Method for reducing startup time during a steam assisted gravity drainage process in parallel horizontal wells |
| 06/01/1993 | CA1318494C Use of polyalphaolefin in downhole drilling |
| 05/27/1993 | WO1993010327A1 Two-part connector for fluid carrying conduits |
| 05/27/1993 | WO1993009887A1 Vacuum apparatus and process for in-situ removing underground liquids and vapors |
| 05/27/1993 | CA2123897A1 Vacuum apparatus and process for in-situ removing underground liquids and vapors |
| 05/26/1993 | EP0543358A1 Arrangement for the cleaning of polluted ground water |
| 05/25/1993 | US5214384 Method including electrical self potential measurements for detecting multiphase flow in a cased hole |
| 05/25/1993 | US5213444 Oil/gas collector/separator for underwater oil leaks |
| 05/25/1993 | US5213414 Mixing apparatus |
| 05/25/1993 | US5213162 Submarine wellhead |
| 05/25/1993 | US5213159 Method and apparatus for monitoring well fluid parameters |
| 05/25/1993 | CA1318241C Above packer perforate test and sample tool and method of use |
| 05/19/1993 | EP0542397A2 Improved phenolic resin coated proppants with reduced hydraulic fluid interaction |
| 05/19/1993 | CN2133666Y Sucker rod with oil pumping function |
| 05/19/1993 | CA2079945A1 Formation treating |
| 05/18/1993 | US5212143 Hollow porous microspheres made from dispersed particle compositions |
| 05/18/1993 | US5211842 Three-phase well test apparatus using pumped recirculation to maintain homogenous flow |
| 05/18/1993 | US5211714 Wireline supported perforating gun enabling oriented perforations |
| 05/18/1993 | US5211242 Apparatus and method for unloading production-inhibiting liquid from a well |
| 05/18/1993 | US5211241 In a conduit |
| 05/18/1993 | US5211240 Method for favoring the injection of fluids in producing zone |
| 05/18/1993 | US5211236 Sand control agent and process |
| 05/18/1993 | US5211235 Sand control agent and process |
| 05/18/1993 | US5211234 Horizontal well completion methods |
| 05/18/1993 | US5211233 Consolidation agent and method |
| 05/18/1993 | US5211232 In-situ silica cementation for profile control during steam injection |
| 05/18/1993 | US5211231 Enhanced oil recovery |
| 05/18/1993 | US5211230 Method for enhanced oil recovery through a horizontal production well in a subsurface formation by in-situ combustion |
| 05/18/1993 | US5211225 Submersible pump adapter |
| 05/18/1993 | US5211203 Portable self-contained ground water testing assembly |
| 05/18/1993 | CA1317872C Method of coalbed methane production |
| 05/18/1993 | CA1317753C Fracturing with a mixture of carbon dioxide and alcohol |
| 05/13/1993 | WO1993009369A1 Gravel-packed pipeline and method and apparatus for installation thereof |
| 05/13/1993 | CA2121479A1 Gravel-packed pipeline and method and apparatus for installation thereof |
| 05/12/1993 | CN1020649C Process for simulating obtaining hydrocarbon by pilot test in deposit |
| 05/11/1993 | US5209765 Centrifugal separator systems for multi-phase fluids |
| 05/11/1993 | US5209605 Gravel-packed pipeline and method and apparatus for installation thereof |
| 05/11/1993 | US5209296 Dissolving sand and fines with acid, consolidation to cement |
| 05/11/1993 | US5209294 Rotor placer for progressive cavity pump |
| 05/11/1993 | US5209293 Apparatus for fluidizing formation fines entrained in formation fluids entering a production well penetrating an oil-bearing formation |
| 05/05/1993 | CN2131974Y 流量调节器 Flow regulator |
| 05/05/1993 | CN2131973Y Hydraulic stirring unit used in oil well bottom |
| 05/05/1993 | CN1071730A Numerically controlled energy-saving oil extractor |
| 05/05/1993 | CN1071644A Soda ash production |
| 05/04/1993 | US5207897 Floating hydrocarbons separator pump with buoyant housing and two-chamber vertically moveable member |
| 05/04/1993 | US5207810 Submersible well pump gas separator |
| 05/04/1993 | US5207778 Method of matrix acidizing |
| 05/04/1993 | US5207533 Process and device for replacing an underground pipe |
| 05/04/1993 | US5207273 Method and apparatus for pumping wells |
| 05/04/1993 | US5207272 Electrically actuated well packer |
| 05/04/1993 | US5207271 Foam/steam injection into a horizontal wellbore for multiple fracture creation |
| 05/04/1993 | US5207096 Advanced method and device for improving the production logs of an activated nonflowing well |
| 05/04/1993 | CA1317215C Recovering oil bypassed by a steam override zone |
| 05/04/1993 | CA1317214C Method and device for effluent production with central well and subhorizontal drains |
| 05/04/1993 | CA1317098C Viscous oil recovery by removing fines |
| 04/29/1993 | WO1993008367A1 Improvements relating to the placement of pipes in the ground |
| 04/29/1993 | CA2119018A1 Improvements relating to the placement of pipes in the ground |
| 04/28/1993 | CN1071487A Hydraulic driven floating-girder beam pumping unit |
| 04/28/1993 | CN1071486A Numerical control operated long-stroke beam-pumping unit |
| 04/28/1993 | CN1071485A Long-stroke beam-pumping unit capable of recoverying return potential energy |
| 04/28/1993 | CN1071484A Long-stroke beam-pumping unit |
| 04/28/1993 | CN1071483A Numerically controlled beam-pumping unit for thick petroleum |
| 04/28/1993 | CN1071354A Numerically controlled slurry screen |
| 04/27/1993 | US5205361 Up and down travelling disc valve assembly apparatus |
| 04/27/1993 | US5205360 Pneumatic well tool for stimulation of petroleum formations |
| 04/27/1993 | US5205359 For injecting sealing balls into a well |
| 04/27/1993 | US5205310 System and method for flow control for high watercut oil production |
| 04/27/1993 | CA1316681C Process for recovering oil |
| 04/22/1993 | CA2053783A1 Two-step method for horizontal gravel packing |
| 04/20/1993 | US5204595 Method and apparatus for controlling a walking beam pump |
| 04/20/1993 | US5203834 Enhanced recovery of nonaqueous fluids from subterranean formations |