| 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) |
|---|
| 09/13/1995 | EP0580575A4 Electromagnetic system for in situ heating |
| 09/13/1995 | EP0570455B1 Compressor system in a subsea station for transporting a well stream |
| 09/13/1995 | CN2207444Y Refractory and high pressure oil sand separator |
| 09/13/1995 | CN2207443Y Travelling beam planet wheel combination long stroke pumping unit |
| 09/12/1995 | US5449251 Dynamic underground stripping: steam and electric heating for in situ decontamination of soils and groundwater |
| 09/12/1995 | US5449249 For use in an open borehole in the ground |
| 09/12/1995 | US5449039 Apparatus and method for horizontal well fracture stimulation |
| 09/12/1995 | US5449038 Combustion of hydrocarbon oils to heat water, injection, enhanced oil recovery |
| 09/08/1995 | WO1995023909A1 Method of exploiting an oil-bearing seam |
| 09/07/1995 | DE4409673C1 Tubing for filter tube for extraction of ground water samples |
| 09/06/1995 | CN2206837Y Automatic pressure unit for water flooding well of oil field |
| 09/05/1995 | US5447416 Pumping device comprising two suction inlet holes with application to a subhorizontal drain hole |
| 09/05/1995 | US5447370 Device for regulating fluctuations of the composition of a multiphase flow |
| 09/05/1995 | US5447201 Well completion system |
| 09/05/1995 | US5447200 Method and apparatus for downhole sand clean-out operations in the petroleum industry |
| 09/05/1995 | CA1336882C Sliding sleeve valve for the production of bored tube wells |
| 08/30/1995 | EP0668969A1 Sludger. |
| 08/30/1995 | EP0668960A1 Permeable isolation sectioned screen |
| 08/30/1995 | EP0668959A1 Method and apparatus for gravel packing a well |
| 08/30/1995 | CN1107643A Process and tool for laying underground collector mains for liquids and gases |
| 08/30/1995 | CN1029637C Method and apparatus for reduction of pressure in liquid mixture |
| 08/29/1995 | US5445474 Pulsing remediation method |
| 08/29/1995 | US5445228 Method and apparatus for formation sampling during the drilling of a hydrocarbon well |
| 08/29/1995 | US5445225 Choke for enhanced gas and oil well production |
| 08/29/1995 | US5445223 Adding base and organic polyol and encapsulated boron containing compound to hydrated galactomannan gum fluid, pumping into well bore |
| 08/29/1995 | US5445220 Apparatus for increasing productivity by cutting openings through casing, cement and the formation rock |
| 08/29/1995 | US5445179 Process for recovering and causing highly viscous petroleum products to flow |
| 08/29/1995 | CA2142917A1 Casing valve |
| 08/29/1995 | CA1336854C Water soluble polymers for detergent compositions |
| 08/24/1995 | WO1995022682A1 Gas lift system with retrievable gas lift valve |
| 08/24/1995 | WO1995022681A2 Tubing rotator and hanger |
| 08/24/1995 | WO1995022680A1 A protective device for an installation mounted on the seabed |
| 08/24/1995 | WO1995022678A1 Fluid riser between seabed and floating vessel |
| 08/24/1995 | CA2182891A1 Fluid riser between seabed and floating vessel |
| 08/22/1995 | US5444598 Capacitor exploding foil initiator device |
| 08/22/1995 | US5443123 Method of particulate consolidation |
| 08/22/1995 | US5443121 Gravel-packing apparatus & method |
| 08/22/1995 | US5443120 Method for improving productivity of a well |
| 08/22/1995 | US5443119 Method for controlling sand production from a hydrocarbon producing reservoir |
| 08/22/1995 | US5443118 Recovering crude oil by introducing water containing ammonium nitrate under decomposition conditions to generate oxidant and combust crude oil causing it to be mobilized for recovery from well |
| 08/22/1995 | US5443117 Frac pack flow sub |
| 08/22/1995 | CA2120851C Electromagnetic reservoir heating with vertical well supply and horizontal well return electrodes |
| 08/17/1995 | WO1995019221A3 Automatic cementing system for precisely obtaining a desired cement density |
| 08/15/1995 | US5442173 Method and system for real-time monitoring of earth formation fracture movement |
| 08/15/1995 | US5441340 Method for controlling the density of a well fracturing slurry |
| 08/15/1995 | US5441112 Integrated base for oil drilling and production work |
| 08/15/1995 | US5441110 System and method for monitoring fracture growth during hydraulic fracture treatment |
| 08/15/1995 | US5441108 Fluid spill catching, containing, collection and recovery system for wellheads |
| 08/15/1995 | CA2015459C Process for confining steam injected into a heavy oil reservoir having a thief zone |
| 08/10/1995 | WO1995021331A1 Severe service extractor valve |
| 08/10/1995 | WO1995021091A1 A vessel for production and/or loading/unloading and transport of hydrocarbons from offshore fields, and/or for carrying out well operations |
| 08/09/1995 | EP0517892B1 Method for reducing the permeability disparity between two zones of a geological formation and use thereof for recovering hydrocarbons |
| 08/09/1995 | CN2204855Y Sandstone target for inspecting shooting bullet hole |
| 08/09/1995 | CN2204854Y Self powering engine for oil production |
| 08/09/1995 | CN2204653Y Multifunctional vortex separator |
| 08/09/1995 | CN1106498A Gas supply unit for underground controlled burning oil recovery |
| 08/09/1995 | CN1029491C Hollow oil pump |
| 08/08/1995 | US5439594 Under vacuum |
| 08/08/1995 | US5439290 Fluid flow conduit vibrator and method |
| 08/08/1995 | US5439066 Method and system for downhole redirection of a borehole |
| 08/08/1995 | US5439055 Control of particulate flowback in subterranean wells |
| 08/08/1995 | US5439054 Method for treating a mixture of gaseous fluids within a solid carbonaceous subterranean formation |
| 08/08/1995 | US5439051 Lateral connector receptacle |
| 08/08/1995 | CA2122845A1 Apparatus and method for horizontal well fracture stimulation |
| 08/04/1995 | CA2140957A1 Method for production of pressurized carbon dioxide |
| 08/04/1995 | CA2140956A1 Severe service extractor valve |
| 08/04/1995 | CA2114900A1 Rod pull down tool |
| 08/03/1995 | WO1995020717A1 Hydrocarbon fluid transport system |
| 08/02/1995 | EP0665066A1 Device for influencing a liquid present in the soil |
| 08/02/1995 | EP0665046A1 Process of pre-treatment of natural gas containing H2S |
| 08/01/1995 | US5437518 Device for mounting a flexible line comprising a curvature limiter |
| 07/27/1995 | WO1995020074A1 Tension leg platform and method of installation therefor |
| 07/26/1995 | CN2204000Y Subsoil filtering means for obtaining oil |
| 07/26/1995 | CN1105733A Sand-control filtering method and filtering equipment for downhole oil production |
| 07/25/1995 | US5436791 Perforating gun using an electrical safe arm device and a capacitor exploding foil initiator device |
| 07/25/1995 | US5435975 Process and skid-mounted system for inert gas generation |
| 07/25/1995 | US5435895 Electrokinetic electrode system for extraction of soil contaminants from unsaturated soils |
| 07/25/1995 | US5435400 Lateral well drilling |
| 07/25/1995 | US5435393 Procedure and production pipe for production of oil or gas from an oil or gas reservoir |
| 07/25/1995 | US5435392 Liner tie-back sleeve |
| 07/25/1995 | US5435391 Method for fracturing and propping a formation |
| 07/25/1995 | US5435389 Sand control agent and process |
| 07/25/1995 | US5435385 Integrated wellhead tubing string |
| 07/25/1995 | CA2140818A1 Control system and method for well stimulation apparatus |
| 07/25/1995 | CA2008393C Hydraulic borehole mining system |
| 07/22/1995 | CA2140471A1 Method for injection well stimulation |
| 07/20/1995 | WO1995019489A1 Method for wireline operation control in cased wells |
| 07/20/1995 | WO1995019221A2 Automatic cementing system for precisely obtaining a desired cement density |
| 07/19/1995 | EP0663510A2 Sulfate scale dissolution |
| 07/19/1995 | EP0662997A1 Method for stabilising crude oils at the outlet of a well, and device therefor |
| 07/19/1995 | CN2203713Y Electric heating oil-extracting apparatus of hollow sucker rod pump |
| 07/19/1995 | CN1105417A Cross-linked polymer oil-displacing agent and preparing process thereof |
| 07/18/1995 | US5433482 Weldless pipe repair apparatus and method |
| 07/18/1995 | US5433273 Method and apparatus for production of subsea hydrocarbon formations |
| 07/18/1995 | US5433271 Heat injection process |
| 07/18/1995 | CA2118988C Non-entry method of underground excavation in weak or water bearing grounds |
| 07/13/1995 | WO1995018911A1 Formation injection tool for down-bore in-situ disposal |
| 07/12/1995 | EP0662189A1 Hydraulic fracturing technique employing in situ precipitation |
| 07/12/1995 | CN2203356Y Superlong stroke pumping unit |
| 07/12/1995 | CN2203355Y Screen pipe hanger |