| 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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| 08/24/1993 | US5238066 Method and apparatus for improved recovery of oil and bitumen using dual completion cyclic steam stimulation |
| 08/24/1993 | US5238060 Sampling pump with packer |
| 08/22/1993 | CA2088179A1 Method for enhanced oil recovery through a horizontal production well in a subsurface formation by in-situ combustion |
| 08/19/1993 | WO1993016267A1 Pulling and connecting tool for subsea conduits |
| 08/18/1993 | EP0555734A1 Device for cleaning ground water |
| 08/18/1993 | CN2140427Y Free water return filler for high water-containing oil well |
| 08/17/1993 | US5237136 For use with an explosive well tool to prevent accidental or premature firing |
| 08/17/1993 | US5236047 Electrically operated well completion apparatus and method |
| 08/17/1993 | US5236040 Method for determining the minimum principle horizontal stress within a formation through use of a wireline retrievable circumferential acoustic scanning tool during an open hole microfrac test |
| 08/17/1993 | US5236039 Balanced-line RF electrode system for use in RF ground heating to recover oil from oil shale |
| 08/17/1993 | CA2015711C Rotatable liner hanger with multiple bearings and cones |
| 08/11/1993 | EP0554241A1 Device for orienting rotor blades in a transverse fluid flow and applications |
| 08/11/1993 | CN2139989Y Sand filter for oil, gas, water well |
| 08/11/1993 | CN2139988Y Anti-winding device for beam-pumping unit well ring hollow testing |
| 08/10/1993 | US5234055 Wellbore pressure differential control for gravel pack screen |
| 08/10/1993 | US5234054 Method for foam emplacement in gas flooding for enhanced oil recovery |
| 08/05/1993 | WO1993015306A1 A subsurface well tool actuator |
| 08/04/1993 | EP0554013A1 Drill stem testing with tubing conveyed perforation |
| 08/04/1993 | EP0553998A1 Well perforating system |
| 08/04/1993 | EP0553566A1 Horizontal well completion method |
| 08/04/1993 | EP0553269A1 Method for controlling solids accompanying hydrocarbon production |
| 08/04/1993 | EP0553209A1 Sintered metal sand screen. |
| 08/04/1993 | EP0457813B1 A process for building a concrete structure in loose matter, from ground level, and equipment for carrying out said process |
| 08/03/1993 | US5232955 Process for producing a high strength artificial (cast) stone with high permeability and filter effect |
| 08/03/1993 | US5232475 Slug flow eliminator and separator |
| 08/03/1993 | US5232051 Oil recovery apparatus |
| 08/03/1993 | US5232049 Sequentially flooding a subterranean hydrocarbon-bearing formation with a repeating cycle of immiscible displacement gases |
| 08/03/1993 | US5232048 Well screen with increased outer surface area |
| 08/03/1993 | CA1320902C Method and apparatus for retaining shaped charges |
| 07/31/1993 | CA2088292A1 Horizontal well completion methods |
| 07/28/1993 | CN2139173Y Balanced pumping unit with long stroke |
| 07/27/1993 | US5230383 Electrically actuated well annulus safety valve |
| 07/22/1993 | CA2087628A1 Method and apparatus for disabling detonation system for a downhole explosive assembly |
| 07/22/1993 | CA2059769A1 In-situ tuned microwave oil extraction process |
| 07/21/1993 | EP0551978A2 Ground contamination remediation process and apparatus |
| 07/21/1993 | CN1074505A Method of manufacturing a selective isolation screen |
| 07/21/1993 | CN1021661C Stabilized sulfur dissolving compositions |
| 07/20/1993 | US5229019 Low fluid leakoff cementing compositions and filtration control additive for cement |
| 07/20/1993 | US5229017 Method of enhancing methane production from coal seams by dewatering |
| 07/20/1993 | US5228524 Fluid system for controlling fluid losses during hydrocarbon recovery operations |
| 07/20/1993 | US5228518 Downhole activated process and apparatus for centralizing pipe in a wellbore |
| 07/20/1993 | US5228510 Method for enhancement of sequential hydraulic fracturing using control pulse fracturing |
| 07/20/1993 | CA1320502C Polyalkyleneoxyamine catalysts for dialkyl disulfides and/or polysulfides used in dissolving sulfur |
| 07/20/1993 | CA1320437C Method of placing a body of shape memory material within a cavity |
| 07/20/1993 | CA1320435C Method for reducing selectively water infiltrations in gas or oil bearing wells |
| 07/20/1993 | CA1320434C Method of casing off a producing formation in a well |
| 07/20/1993 | CA1320433C Above packer perforate, test and sample tool and method of use |
| 07/14/1993 | EP0551021A1 Method of gelling hydrocarbons and treatment of subterranean formations therewith |
| 07/14/1993 | CN1074274A Subsea separator pump system |
| 07/14/1993 | CN1074269A Well screens and screen prepacks |
| 07/13/1993 | US5226749 Waste disposal in hydraulically fractured earth formations |
| 07/13/1993 | US5226495 Fines control in deviated wells |
| 07/13/1993 | US5226494 Subsurface well apparatus |
| 07/13/1993 | US5226491 Solenoid operated blanking block valve |
| 07/13/1993 | US5226485 Pass-through zone isolation packer and process for isolating zones in a multiple-zone well |
| 07/13/1993 | US5226482 Installation and method for the offshore exploitation of small fields |
| 07/13/1993 | US5226444 Surge relief valve |
| 07/13/1993 | CA1320303C Aminoalkylated polyacrylamide aldehyde gels, their preparation and use in oil recovery |
| 07/13/1993 | CA1320127C Placement method of plugs and screens in horizontal drilling |
| 07/13/1993 | CA1320125C Process and apparatus for handling/steering at least one device within a well casing |
| 07/08/1993 | WO1993013293A1 Inflatable packer assembly |
| 07/08/1993 | WO1993013291A1 Arrangement for removing drill cuttings in connection with well drilling in the sea bottom |
| 07/07/1993 | CN1074015A Numerical control sprocket beam-pumping unit |
| 07/06/1993 | USH1206 Cascade crossflow tower |
| 07/06/1993 | US5225123 Feeding a dispersion and a blowing gas while heating |
| 07/06/1993 | US5225090 Visible gels prepared using stainless steel as a crosslinking agent |
| 07/06/1993 | US5224837 Apparatus for recovery of liquid hydrocarbon |
| 07/06/1993 | US5224556 Downhole activated process and apparatus for deep perforation of the formation in a wellbore |
| 07/06/1993 | US5224545 Eccentrically actuated perforating guns |
| 07/06/1993 | US5224543 Use of scale inhibitors in hydraulic fracture fluids to prevent scale build-up |
| 07/06/1993 | US5224542 Gas fired radiant tube heater |
| 07/06/1993 | US5224389 Method and apparatus for taking samples from a groundwater monitoring site |
| 07/06/1993 | CA1319819C Formation fracturing process |
| 06/30/1993 | EP0549440A1 Method of optimisation of a device for regulating and dampening of a polyphasic flow and device obtained by this method |
| 06/30/1993 | EP0549439A1 Method and apparatus for optimising the transport of multiphase flows by pumping |
| 06/30/1993 | EP0548910A1 Method of manufacturing a selective isolation screen |
| 06/30/1993 | EP0548903A1 Method of manufacturing a selective isolation screen |
| 06/30/1993 | EP0548768A1 Method and device for influencing a liquid present in the soil |
| 06/30/1993 | EP0548766A2 System and method for soil decontamination using recoverable extraction and injection probes |
| 06/30/1993 | EP0548765A2 System for soil decontamination using recoverable extraction and injection probes |
| 06/30/1993 | CN1073755A Oil-field gas injection boiler parameters measuring and controlling apparatus |
| 06/30/1993 | CN1073742A Method of manufacturing a selective isolation screen |
| 06/29/1993 | US5223665 Method and apparatus for disabling detonation system for a downhole explosive assembly |
| 06/29/1993 | US5222558 Method of controlling porosity of well fluid blocking layers and corresponding acid soluble mineral fiber well facing product |
| 06/29/1993 | US5222557 Sand control agent and process |
| 06/29/1993 | US5222556 Acidizing method for gravel packing wells |
| 06/29/1993 | CA1319675C Apparatus for vibrating a pipe string in a borehole |
| 06/29/1993 | CA1319604C Recovery of heavy crude oil or tar sand oil or bitumen from underground formations |
| 06/29/1993 | CA1319603C Fracture stimulation of coal degasification wells |
| 06/24/1993 | WO1993012323A1 Well filter |
| 06/23/1993 | EP0547865A2 Well screen with prepacked screen element |
| 06/23/1993 | EP0500664B1 Improved method for transporting particles in a porous medium |
| 06/23/1993 | CN2136874Y Deep well fracturing bullet |
| 06/23/1993 | CN1073499A Two-stage balanced phase-regulating beam-pumping unit |
| 06/22/1993 | US5221159 Subsurface contaminant remediation, biodegradation and extraction methods and apparatuses |
| 06/22/1993 | US5220962 Pump apparatus for pumping well fluids from a wellbore having low formation pressure |
| 06/22/1993 | US5220958 Arrangement for driving out of volatile impurities from ground water |
| 06/22/1993 | US5220829 Downhole formation pump |
| 06/21/1993 | CA2085393A1 Metering of two-phase fluids using flow homogenizing devices and chemicals |
| 06/21/1993 | CA2084274A1 Enhanced gradient soil and groundwater remediation method |