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Class Information
Number: 166/266
Name: Wells > Processes > Separating material entering well > Injection and producing wells
Description: A process including using a plurality of wells, at least one of which receives a fluid for insertion into the pores of the earth and another of which conveys a fluid from the pores of the earth to the surface of the earth.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5014785 |
Methane production from carbonaceous subterranean formations |
May. 14, 1991 |
| 4992174 |
Fixed bed bioreactor remediation system |
Feb. 12, 1991 |
| 4969520 |
Steam injection process for recovering heavy oil |
Nov. 13, 1990 |
| 4948494 |
Removal of hydrogen sulfide from produced fluids |
Aug. 14, 1990 |
| 4945988 |
Apparatus and process for removing volatile contaminants from below ground level |
Aug. 7, 1990 |
| 4930574 |
Method for tertiary oil recovery from deep-well drill holes with utilization of the escaping petroleum gas |
Jun. 5, 1990 |
| 4890673 |
Method of removing volatile contaminants from contaminated earth strata |
Jan. 2, 1990 |
| 4883122 |
Method of coalbed methane production |
Nov. 28, 1989 |
| 4866939 |
Method and apparatus for extracting geothermal fluid |
Sep. 19, 1989 |
| 4848460 |
Contained recovery of oily waste |
Jul. 18, 1989 |
| 4832122 |
In-situ remediation system and method for contaminated groundwater |
May. 23, 1989 |
| 4819724 |
Modified push/pull flood process for hydrocarbon recovery |
Apr. 11, 1989 |
| 4817715 |
Aqueous flooding methods for tertiary oil recovery |
Apr. 4, 1989 |
| 4793416 |
Organic crosslinking of polymers for CO2 flooding profile control |
Dec. 27, 1988 |
| 4787452 |
Disposal of produced formation fines during oil recovery |
Nov. 29, 1988 |
| 4765407 |
Method of producing gas condensate and other reservoirs |
Aug. 23, 1988 |
| 4756367 |
Method for producing natural gas from a coal seam |
Jul. 12, 1988 |
| 4744417 |
Method for effectively handling CO.sub.2 -hydrocarbon gas mixture in a miscible CO.sub.2 flood for oil recovery |
May. 17, 1988 |
| 4741398 |
Hydraulic accumulator-compressor for geopressured enhanced oil recovery |
May. 3, 1988 |
| 4730672 |
Method of removing and controlling volatile contaminants from the vadose layer of contaminated earth |
Mar. 15, 1988 |
| 4712616 |
Method for scale reduction in off-shore platforms |
Dec. 15, 1987 |
| 4706751 |
Heavy oil recovery process |
Nov. 17, 1987 |
| 4703798 |
In situ method for recovering hydrocarbon from subterranean oil shale deposits |
Nov. 3, 1987 |
| 4701271 |
Treating oil-water-surfactant emulsions with strong inorganic acid |
Oct. 20, 1987 |
| 4697642 |
Gravity stabilized thermal miscible displacement process |
Oct. 6, 1987 |
| 4687058 |
Solvent enhanced fracture-assisted steamflood process |
Aug. 18, 1987 |
| 4676315 |
Method for concentrating surfactant from a brine solution |
Jun. 30, 1987 |
| 4673484 |
Amphiphilic phase behavior separation of carboxylic acids/hydrocarbon mixtures in recovery of oil from tar sands or the like |
Jun. 16, 1987 |
| 4669542 |
Simultaneous recovery of crude from multiple zones in a reservoir |
Jun. 2, 1987 |
| 4670157 |
Process for clarifying bicarbonate bearing water using measurement and control of carbon dioxide content |
Jun. 2, 1987 |
| 4643252 |
Carbon dioxide miscible displacement process |
Feb. 17, 1987 |
| 4641710 |
Enhanced recovery of subterranean deposits by thermal stimulation |
Feb. 10, 1987 |
| 4637465 |
Removal of phenols in groundwater after underground gasification of coal |
Jan. 20, 1987 |
| 4637464 |
In situ retorting of oil shale with pulsed water purge |
Jan. 20, 1987 |
| 4614234 |
Method of recovering coal values by combining underground coal gasification with surface coal liquefaction |
Sep. 30, 1986 |
| 4585063 |
Oil shale retorting and retort water purification process |
Apr. 29, 1986 |
| 4575154 |
In situ leach method |
Mar. 11, 1986 |
| 4563283 |
Process for clarifying bicarbonate bearing waters using measurement and control of carbon dioxide content |
Jan. 7, 1986 |
| 4559148 |
Method of extracting and reutilizing surfactants from emulsions |
Dec. 17, 1985 |
| 4552214 |
Pulsed in situ retorting in an array of oil shale retorts |
Nov. 12, 1985 |
| 4550779 |
Process for the recovery of hydrocarbons for mineral oil deposits |
Nov. 5, 1985 |
| 4532991 |
Pulsed retorting with continuous shale oil upgrading |
Aug. 6, 1985 |
| 4529037 |
Method of forming carbon dioxide mixtures miscible with formation crude oils |
Jul. 16, 1985 |
| 4518038 |
Method of extracting and reutilizing surfactants from emulsions using sulfonated alkyl benzenes and ethoxylated phenols |
May. 21, 1985 |
| 4516635 |
Method of extracting and reutilizing surfactants from emulsions with sulfonated alkyl benzenes and alcohols |
May. 14, 1985 |
| 4513733 |
Oil field steam production and use |
Apr. 30, 1985 |
| 4513820 |
Method of extracting and reutilizing surfactants from emulsions |
Apr. 30, 1985 |
| 4512400 |
Miscible displacement drive for enhanced oil recovery in low pressure reservoirs |
Apr. 23, 1985 |
| 4488598 |
Steam, noncondensable gas and foam for steam and distillation drive _in subsurface petroleum production |
Dec. 18, 1984 |
| 4485871 |
In-situ process for recovering hydrocarbons from a diatomite-type formation |
Dec. 4, 1984 |
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