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Class Information
Number: 166/57
Name: Wells > With heating, refrigerating or heat insulating means
Description: Devices for causing a heating, refrigerating or heat insulating effect.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4765406 |
Method of and apparatus for increasing the mobility of crude oil in an oil deposit |
Aug. 23, 1988 |
| 4765410 |
Method and apparatus for cleaning wells |
Aug. 23, 1988 |
| 4754811 |
Controlled retracting gasifying agent injection point process for UCG sites |
Jul. 5, 1988 |
| 4741386 |
Fluid treatment apparatus |
May. 3, 1988 |
| 4700781 |
Heavy crude oil production tool and method |
Oct. 20, 1987 |
| 4693313 |
Insulated wellbore casing |
Sep. 15, 1987 |
| 4678039 |
Method and apparatus for secondary and tertiary recovery of hydrocarbons |
Jul. 7, 1987 |
| 4667739 |
Thermal drainage process for recovering hot water-swollen oil from a thick tar sand |
May. 26, 1987 |
| 4641710 |
Enhanced recovery of subterranean deposits by thermal stimulation |
Feb. 10, 1987 |
| 4640355 |
Limited entry method for multiple zone, compressible fluid injection |
Feb. 3, 1987 |
| 4640352 |
In-situ steam drive oil recovery process |
Feb. 3, 1987 |
| 4595057 |
Parallel string method for multiple string, thermal fluid injection |
Jun. 17, 1986 |
| 4594164 |
Method and apparatus for conducting chemical reactions at supercritical conditions |
Jun. 10, 1986 |
| 4593763 |
Carbon dioxide well injection method |
Jun. 10, 1986 |
| 4577691 |
Method and apparatus for producing viscous hydrocarbons from a subterranean formation |
Mar. 25, 1986 |
| 4557328 |
Method for underground burning of coal for energy |
Dec. 10, 1985 |
| 4553592 |
Method of protecting an RF applicator |
Nov. 19, 1985 |
| 4546829 |
Enhanced oil recovery process |
Oct. 15, 1985 |
| 4524827 |
Single well stimulation for the recovery of liquid hydrocarbons from subsurface formations |
Jun. 25, 1985 |
| 4523644 |
Thermal oil recovery method |
Jun. 18, 1985 |
| 4522258 |
Unitized well testing apparatus for use in hostile environments |
Jun. 11, 1985 |
| 4513733 |
Oil field steam production and use |
Apr. 30, 1985 |
| 4513815 |
System for providing RF energy into a hydrocarbon stratum |
Apr. 30, 1985 |
| 4512403 |
In situ coal gasification |
Apr. 23, 1985 |
| 4512721 |
Vacuum insulated stem injection tubing |
Apr. 23, 1985 |
| 4509595 |
In situ combustion for oil recovery |
Apr. 9, 1985 |
| 4508172 |
Tar sand production using thermal stimulation |
Apr. 2, 1985 |
| 4499946 |
Enhanced oil recovery process and apparatus |
Feb. 19, 1985 |
| 4498542 |
Direct contact low emission steam generating system and method utilizing a compact, multi-fuel burner |
Feb. 12, 1985 |
| 4496001 |
Vacuum system for reducing heat loss |
Jan. 29, 1985 |
| 4474238 |
Method and apparatus for treatment of subsurface formations |
Oct. 2, 1984 |
| 4470188 |
Method of mechanically prestressing a tubular apparatus |
Sep. 11, 1984 |
| 4456069 |
Process and apparatus for treating hydrocarbon-bearing well formations |
Jun. 26, 1984 |
| 4453597 |
Stimulation of hydrocarbon flow from a geological formation |
Jun. 12, 1984 |
| 4440219 |
Thermally isolated well instruments |
Apr. 3, 1984 |
| 4424858 |
Apparatus for recovering gaseous hydrocarbons from hydrocarbon-containing solid hydrates |
Jan. 10, 1984 |
| 4423779 |
Oil recovery system and process |
Jan. 3, 1984 |
| 4421169 |
Protective sheath for high temperature process wells |
Dec. 20, 1983 |
| 4413678 |
Alarm means for use with apparatus protecting a device situated in a borehole |
Nov. 8, 1983 |
| 4408665 |
In situ recovery of oil and gas from water-flooded oil shale formations |
Oct. 11, 1983 |
| 4403656 |
Permanent thermal packer |
Sep. 13, 1983 |
| 4399865 |
Concentric steaming string downhole apparatus |
Aug. 23, 1983 |
| 4398597 |
Means and method for protecting apparatus situated in a borehole from closure of the borehole |
Aug. 16, 1983 |
| 4398603 |
Steam generation from low quality feedwater |
Aug. 16, 1983 |
| 4398604 |
Method and apparatus for producing a high pressure thermal vapor stream |
Aug. 16, 1983 |
| 4396063 |
Process and system for providing multiple streams of wet steam having substantially equal quality for recovering heavy oil |
Aug. 2, 1983 |
| 4396064 |
Method and apparatus for injecting a gaseous stream into a subterranean zone |
Aug. 2, 1983 |
| 4376462 |
Substantially self-powered method and apparatus for recovering hydrocarbons from hydrocarbon-containing solid hydrates |
Mar. 15, 1983 |
| 4372378 |
Shut-in device for stopping the flow of high pressure fluids |
Feb. 8, 1983 |
| 4372386 |
Steam injection method and apparatus for recovery of oil |
Feb. 8, 1983 |
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