Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 36 - Heating, cooling, or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
Patents for E21B 36 - Heating, cooling, or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones (4,262)
11/1993
11/10/1993CN2145858Y Electrothermal pumping unit
11/03/1993CN1078015A Electrically heated pumping unit
10/1993
10/28/1993WO1993021478A1 Compressing gas flowing through a conduit
10/28/1993WO1993021477A1 Compressing combustible gas flowing through a conduit
10/26/1993US5255742 Heat injection process
10/12/1993US5251700 Well casing providing directional flow of injection fluids
09/1993
09/28/1993US5247994 Heating to remove solid wax deposits
09/21/1993US5246350 High efficiency solar powered pumping system
09/14/1993US5244310 In-situ soil heating press/vapor extraction system
09/14/1993CA1322106C In-situ heating to detoxify organic-contaminated soils
09/08/1993EP0558534A1 Well completion system
09/01/1993EP0557623A2 Mobile material decontamination apparatus
08/1993
08/26/1993CA2081751A1 Mobile material decontamination apparatus
08/24/1993US5238066 Method and apparatus for improved recovery of oil and bitumen using dual completion cyclic steam stimulation
08/17/1993US5236039 Balanced-line RF electrode system for use in RF ground heating to recover oil from oil shale
07/1993
07/06/1993US5224542 Gas fired radiant tube heater
06/1993
06/10/1993WO1993011337A1 Method and apparatus for heating a hot-setting substance injected in a borehole
06/08/1993US5217075 Method and device for carrying out interventions in wells where high temperatures prevail
06/08/1993CA1318848C Dewaxing apparatus for oil well
06/01/1993US5215149 Single horizontal well conduction assisted steam drive process for removing viscous hydrocarbonaceous fluids
05/1993
05/27/1993CA2081707A1 Triazine reinforcement and curing of hydrogenated acrylonitrile butadiene rubber
05/25/1993US5213157 Clamping device for capping oil wells and the like, and apparatus for mounting same
05/18/1993US5211223 Down hole oil well heater employing electro-thermal paper
04/1993
04/07/1993CN2129335Y Thermostated container of christmas tree at petroleum portal
04/06/1993US5199488 Electromagnetic method and apparatus for the treatment of radioactive material-containing volumes
03/1993
03/04/1993WO1993004262A1 Electromagnetic method and apparatus for the treatment of radioactive material-containing volumes
03/02/1993US5190405 Vacuum method for removing soil contaminants utilizing thermal conduction heating
02/1993
02/23/1993US5189283 Current to power crossover heater control
01/1993
01/26/1993US5182792 Process of electric pipeline heating utilizing heating elements inserted in pipelines
01/11/1993CA2073415A1 Oil well production system
12/1992
12/15/1992US5171139 Moineau motor with conduits through the stator
12/08/1992US5168929 Method and apparatus for removal of oil well paraffin
11/1992
11/17/1992US5163511 Method and apparatus for ignition of downhole gas generator
10/1992
10/29/1992WO1992018748A1 Electromagnetic system for in situ heating
10/21/1992CN1018748B Oil-well electrothermic band
10/06/1992US5152341 Electromagnetic method and apparatus for the decontamination of hazardous material-containing volumes
09/1992
09/17/1992WO1992015770A1 Electromagnetic method and apparatus for the decontamination of hazardous material-containing volumes
09/15/1992US5146987 Method and apparatus for controlling the flow of crude oil from the earth
09/09/1992EP0413753B1 Tubing collar
09/09/1992CN2115402U Electrical heater for pump well
08/1992
08/26/1992EP0500206A2 Insulating composition
08/25/1992US5142608 Horizontal steam generator for oil wells
08/19/1992CN1063710A Insulating composition
07/1992
07/09/1992WO1992008875A3 Well completion system
07/07/1992US5127457 Method and well system for producing hydrocarbons
06/1992
06/30/1992US5126037 Geopreater heating method and apparatus
06/17/1992CN1062017A Low resistance electrical heater
06/10/1992CN2106887U Multi-functional working frequency power supply unit for electric heating oil production
06/09/1992US5120935 Method and apparatus for oil well stimulation utilizing electrically heated solvents
06/09/1992CA1302873C Method and system for preventing sulphur deposition in high-h-s productionwells
05/1992
05/29/1992WO1992008875A2 Well completion system
05/19/1992US5114497 Heating to vaporize contaminants
05/19/1992CA1301057C Tubing collar
05/14/1992WO1992008036A1 Device to eliminate and prevent deposition of paraffin and hydrates in wells
05/13/1992EP0484948A2 Robust electrical heating systems for mineral wells
05/01/1992CA2043284A1 Low thermal stress steam distribution manifold
04/1992
04/28/1992CA1299620C Thermal protecting blanket for a well head control device
04/21/1992US5105880 Formation heating with oscillatory hot water circulation
04/16/1992WO1992006274A1 Method and apparatus for oil well stimulation
04/07/1992CA2011569C Thermal blanket for well-heads, blow-out preventors and the like
04/07/1992CA1298543C Thermal drainage process for recovering hot water-swollen oil from a thick tar sand
03/1992
03/31/1992US5100259 Cold cap subsidence for in situ vitrification and electrodes therefor
03/31/1992US5099918 Power sources for downhole electrical heating
03/25/1992CN2099833U Integral type electrothermal oil pumping rod column
03/25/1992CN1016001B Conductively heating subterranean oil shale to create permeability and subsequently produce oil
03/17/1992US5095974 Assembly for introducing steam into an oil-bearing stratum
03/11/1992CN2098550U Immersing electrothermal apparatus for oil extraction
03/04/1992EP0473369A1 Process of and apparatus for electric pipeline heating
02/1992
02/19/1992CN2096635U High-congeal oil heating rod
02/04/1992US5085275 Process for conserving steam quality in deep steam injection wells
01/1992
01/28/1992CA1294867C Process for heavy oil recovery
01/25/1992CA2021804A1 Technique for electrically heating formations
01/22/1992EP0467635A2 Thermally insulating compositions and a method of insulating pipeline bundles and pipeline riser caissons
01/21/1992US5082055 Gas fired radiant tube heater
01/21/1992US5082054 In-situ tuned microwave oil extraction process
01/14/1992CA1294309C Mineral well heating systems
01/02/1992EP0386176B1 Installation for energy exchange between the ground and an energy exchanger
12/1991
12/11/1991EP0235268B1 Method and apparatus for reducing viscosity of high viscosity materials
12/03/1991US5070533 Robust electrical heating systems for mineral wells
12/03/1991CA1292674C Method for thermal stimulation of a subterranean reservoir and apparatus therefor
11/1991
11/22/1991CA2041979A1 Steam distribution manifold
11/19/1991US5065819 Electromagnetic apparatus and method for in situ heating and recovery of organic and inorganic materials
11/19/1991US5065818 Subterranean heaters
10/1991
10/30/1991CN2087687U Multifunctional petroleum electrothermal equipment
10/30/1991CN1055794A Heat extractor for petroleum
10/29/1991US5060726 Method and apparatus for producing tar sand deposits containing conductive layers having little or no vertical communication
10/23/1991CN2087239U Multi-functional line-frequency heater for horehole or well
10/22/1991US5060287 Heater utilizing copper-nickel alloy core
10/22/1991US5058675 Method and apparatus for the destructive distillation of kerogen in situ
10/19/1991CA2038649A1 Catalytic downhole reactor and steam generator
10/16/1991CN1014336B In-situ steam drive oil recovery process
10/15/1991US5056597 Injecting and mixing a surfactant; uniform distribution
10/08/1991US5055030 Method for the recovery of hydrocarbons
10/01/1991WO1991015654A1 Thermal mineral extraction system
10/01/1991US5052482 Catalytic downhole reactor and steam generator
08/1991
08/27/1991US5042579 Method and apparatus for producing tar sand deposits containing conductive layers
08/21/1991EP0442408A2 Device for sealing a steam injection pipe in an oil layer
08/21/1991CN2083191U Burner with ejection water jacket
08/21/1991CN1053940A Sealing apparatus of steam tube through to oil bearing stratum in borehole
08/20/1991US5040605 Oil recovery method and apparatus
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