| 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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| 04/20/1993 | US5203682 Inclined pressure boost pump |
| 04/20/1993 | US5203413 Product and process for acid diversion in the treatment of subterranean formations |
| 04/15/1993 | WO1993007391A1 Pump |
| 04/14/1993 | CN2129820Y Lens flow controller |
| 04/14/1993 | CN2129819Y Multiple protective function power saving control box for oil pump |
| 04/14/1993 | CN2129818Y Multiple protective function power saving control box for oil pump |
| 04/13/1993 | US5201815 Enhanced oil recovery method using an inverted nine-spot pattern |
| 04/07/1993 | CN2129337Y 弹性芯轴 Elastic mandrel |
| 04/07/1993 | CN1070671A Method for reducing petention of displacing agent and application to enhanced hydrocarbon recovery |
| 04/06/1993 | US5200117 Composition of polyaminopolycarboxylic acid or salt chelating agent, synergist-catalyst of monocarboxy acid anion |
| 04/06/1993 | US5199766 Cavity induced stimulation of coal degasification wells using solvents |
| 04/06/1993 | US5199496 Subsea pumping device incorporating a wellhead aspirator |
| 04/06/1993 | US5199491 In situ polymerization of polyurethane from blocked diisocyanate and diol |
| 04/06/1993 | US5199490 Formation treating |
| 04/06/1993 | US5199488 Electromagnetic method and apparatus for the treatment of radioactive material-containing volumes |
| 04/06/1993 | CA1315671C Instrument/tool positioning device |
| 04/02/1993 | CA2052558A1 Gas flooding with a horizontal well and two vertical wells |
| 04/01/1993 | WO1993006369A1 Linear electric motor and method of using and constructing same |
| 04/01/1993 | WO1993006337A1 Method, arrangement and jet pump adapter unit for pumping produced fluids |
| 04/01/1993 | WO1993006336A1 Downhole activated system for perforating a wellbore |
| 04/01/1993 | WO1993006333A1 Downhole activated process and apparatus for centralizing pipe in a wellbore |
| 04/01/1993 | DE4131216A1 Removing contaminants at or above ground water surface - while flooding overlying soil with protective gas |
| 03/31/1993 | EP0465623A4 Method and apparatus for sealing pipe perforations |
| 03/30/1993 | US5197783 Extendable/erectable arm assembly and method of borehole mining |
| 03/30/1993 | US5197545 Dihydrothiazole in vapor phase as corrosion inhibitors in lift gas process |
| 03/30/1993 | US5197543 Horizontal well treatment method |
| 03/30/1993 | US5197541 Apparatus for two phase vacuum extraction of soil contaminants |
| 03/30/1993 | CA1315319C Flowline connector |
| 03/30/1993 | CA1315192C Gravel packing tool |
| 03/30/1993 | CA1315190C Method and apparatus for working or troubleshooting in a well |
| 03/24/1993 | CN2128668Y Diverter |
| 03/24/1993 | CN1070245A 溶液流量调节器 Solution flow regulator |
| 03/23/1993 | US5196124 Method of controlling the production of radioactive materials from a subterranean reservoir |
| 03/23/1993 | US5195588 Apparatus and method for testing and repairing in a cased borehole |
| 03/23/1993 | US5195587 Vapor recovery system |
| 03/23/1993 | CA1314765C Shaped charge carrier |
| 03/18/1993 | WO1992017679A3 Hydraulic release oil tool |
| 03/18/1993 | DE4131099A1 Porous components e.g. pipes for dewatering uses |
| 03/18/1993 | CA2116965A1 Process for inhibiting scale formation in subterranean formations |
| 03/17/1993 | EP0532397A1 Continuous mixing device, process and use in a pumping plant for high viscosity fluid |
| 03/17/1993 | EP0531855A1 Device for the purification of ground water, by stripping with a gas, particularly air |
| 03/16/1993 | US5193985 Pump control system for a downhole motor-pump assembly and method of using same |
| 03/16/1993 | US5193934 In-situ thermal desorption of contaminated surface soil |
| 03/16/1993 | US5193618 Injection of surfactants, foaming agents and sequesterants |
| 03/16/1993 | US5193615 Apparatus for use in controlling flow through a tubing string suspended and packed off within well bore as well as within the annulus between the tubing string and well bore above and below the packer |
| 03/16/1993 | US5193614 Cable anchor assembly |
| 03/16/1993 | CA1314582C Electric motor |
| 03/16/1993 | CA1314475C Emplacement of filter packs and seals for groundwater monitoring |
| 03/16/1993 | CA1314408C System for sensing ions in aqueous solution |
| 03/14/1993 | CA2051368A1 Subsurface hydrocarbon pumping apparatus and method |
| 03/13/1993 | CA2078029A1 System and method for flow control for high watercut oil production |
| 03/13/1993 | CA2077236A1 Multivalent ion tolerant steam-foaming surfactant composition for use in enhanced oil recovery operations |
| 03/10/1993 | EP0505441A4 Method of supporting fractures in geological formations and hydraulic fluid composition for same |
| 03/09/1993 | US5192167 Subsea production system |
| 03/09/1993 | US5192164 Soda ash production |
| 03/09/1993 | US5191940 Oil/gas separator for installation at burning wells |
| 03/09/1993 | US5191936 Method and apparatus for controlling a well tool suspended by a cable in a wellbore by selective axial movements of the cable |
| 03/09/1993 | US5191933 Wellbore apparatus including a rathole pressure balanced-differential pressure firing system |
| 03/05/1993 | CA2077520A1 Inclined pressure boost pump |
| 03/04/1993 | WO1993004268A1 Method for producing multiple fractures in a wellbore |
| 03/04/1993 | WO1993004267A1 Treating formations using alternate flowpaths |
| 03/04/1993 | WO1993004264A1 Scale inhibition in oil producing wells |
| 03/04/1993 | WO1993004262A1 Electromagnetic method and apparatus for the treatment of radioactive material-containing volumes |
| 03/03/1993 | EP0530062A1 Fractionating process for oil and gas from a petroleum oil field effluent |
| 03/03/1993 | CN1069551A Well screen having protective-frame for horizontal or high-angle well |
| 03/02/1993 | US5190675 Gelling organic liquids |
| 03/02/1993 | US5190656 Method for removing scale via a liquid membrane in combination with an amino carboxylic acid and a catalyst |
| 03/02/1993 | US5190405 Vacuum method for removing soil contaminants utilizing thermal conduction heating |
| 03/02/1993 | US5190374 Hydrating polymer to well treatment gel by feeding particulate polymer with hydration-delaying coating to solids inlet of water spraying mixer, supplying water stream to water inlet of mixer, buffering water, mixing polymer and water, spiral flow |
| 03/02/1993 | US5190108 Method and apparatus for inhibiting biological fouling of water wells |
| 03/02/1993 | US5190105 Method for improving the steam splits in a multiple steam injection process |
| 03/02/1993 | US5190103 Injecting surfactant into fluid to form pseudo-single phase fluid |
| 03/02/1993 | US5190102 Making prepack sleeve for well screen by making metal slivers of specified lengths, compressing in mold, sintering until slivers become tacky and bond to each other |
| 02/24/1993 | EP0528550A2 Treating subterranean formations |
| 02/24/1993 | EP0527932A1 Preform device and process for coating and/or lining a cylindrical volume |
| 02/24/1993 | EP0527924A1 Underground fluid sampling system |
| 02/24/1993 | EP0527858A1 Production systems for underwater wells |
| 02/24/1993 | CN2127429Y Buffer fracturing bullet |
| 02/24/1993 | CN2127428Y Plate-type chain for obtd. petroleum |
| 02/23/1993 | WO1993004266A1 Method of reducing retention of a displacement agent and application in the assisted recovery of hydrocarbons |
| 02/23/1993 | US5189388 Oil well pump start-up alarm |
| 02/23/1993 | US5188182 System containing expendible isolation valve with frangible sealing member, seat arrangement and method for use |
| 02/23/1993 | US5188178 Method and apparatus for automatic well stimulation |
| 02/23/1993 | US5188176 Cement slurries for diviated wells |
| 02/23/1993 | US5188175 Method of fracturing a subterranean formation with a lightweight propping agent |
| 02/23/1993 | CA2094389A1 Method of reducing retention of a displacement agent and application in the assisted recovery of hydrocarbons |
| 02/23/1993 | CA1313755C Oil recovery process using alkyl hydroxyaromatic dianionic surfactants as mobility control agents |
| 02/17/1993 | EP0527618A1 Satellite tree module and flow line structure for interconnection of a satellite well to a subsea production system |
| 02/17/1993 | EP0527426A1 Well screen having a protective frame for a horizontal or high-angle well |
| 02/17/1993 | CN1068970A Hydrocyclone separator |
| 02/16/1993 | US5186257 N-vinylpyrrolidone homo-, co- and terpolymers with vinly sulfonates and phosphonates |
| 02/16/1993 | US5186256 Three directional drilling process for environmental remediation of contaminated subsurface formations |
| 02/16/1993 | US5186255 Flow monitoring and control system for injection wells |
| 02/16/1993 | US5186048 To evaluate the fluids produced by pumping from a formation interval well |
| 02/10/1993 | CN2126873Y Winding-proof guide-vane apparatus for oil well ring space testing |
| 02/09/1993 | US5184679 Gravel packing process |
| 02/09/1993 | US5184678 Acoustic flow stimulation method and apparatus |
| 02/09/1993 | US5184677 Pass-through zone isolation packer and process for isolating zones in a multiple-zone well |
| 02/03/1993 | EP0525944A1 Determination of subterranean formation fracture parameters |
| 02/03/1993 | EP0525698A2 Device for collecting measurement samples |