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Class Information
Number: 166/259
Name: Wells > Processes > In situ combustion > Including fracturing or attacking formation
Description: A process in which the earth is cracked to produce a fissure or fissures therein, or in which fluid introduced into the pores of the earth chemically reacts with the earth or deposits in the earth to enlarge the pores of the earth.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4140181 |
Two-stage removal of sulfur dioxide from process gas using treated oil shale |
Feb. 20, 1979 |
| 4133380 |
Establishing a combustion zone below a sill pillar in an in situ oil shale retort |
Jan. 9, 1979 |
| 4133381 |
Contacting treated oil shale with carbon dioxide to inhibit leaching |
Jan. 9, 1979 |
| 4130164 |
Process for coal gasification |
Dec. 19, 1978 |
| 4126180 |
Method of enhancing yield from an in situ oil shale retort |
Nov. 21, 1978 |
| 4125157 |
Removing sulfur dioxide from gas streams with retorted oil shale |
Nov. 14, 1978 |
| 4122897 |
In situ gasification process for producing product gas enriched in carbon monoxide and hydrogen |
Oct. 31, 1978 |
| 4121663 |
Removing hydrogen sulfide from a gas |
Oct. 24, 1978 |
| 4121662 |
Water purification with fragmented oil shale |
Oct. 24, 1978 |
| 4120355 |
Method for providing fluid communication for in situ shale retort |
Oct. 17, 1978 |
| 4119345 |
In situ oil shale retorting process using introduction of gas at an intermediate location |
Oct. 10, 1978 |
| 4118071 |
In situ oil shale retort with a horizontal sill pillar |
Oct. 3, 1978 |
| 4118070 |
Subterranean in situ oil shale retort and method for making and operating same |
Oct. 3, 1978 |
| 4117886 |
Oil shale retorting and off-gas purification |
Oct. 3, 1978 |
| 4114688 |
Minimizing environmental effects in production and use of coal |
Sep. 19, 1978 |
| 4109718 |
Method of breaking shale oil-water emulsion |
Aug. 29, 1978 |
| 4109964 |
Method for preconditioning oil shale preliminary to explosive expansion and in situ retorting thereof |
Aug. 29, 1978 |
| 4109719 |
Method for creating a permeable fragmented zone within a subterranean carbonaceous deposit for in situ coal gasification |
Aug. 29, 1978 |
| 4105072 |
Process for recovering carbonaceous values from post in situ oil shale retorting |
Aug. 8, 1978 |
| 4102397 |
Sealing an underground coal deposit for in situ production |
Jul. 25, 1978 |
| 4099567 |
Generating medium BTU gas from coal in situ |
Jul. 11, 1978 |
| 4096912 |
Methods for minimizing plastic flow of oil shale during in situ retorting |
Jun. 27, 1978 |
| 4091869 |
In situ process for recovery of carbonaceous materials from subterranean deposits |
May. 30, 1978 |
| 4089375 |
In situ retorting with water vaporized in situ |
May. 16, 1978 |
| 4089374 |
Producing methane from coal in situ |
May. 16, 1978 |
| 4086962 |
Decreasing hydrogen sulfide concentration of a gas |
May. 2, 1978 |
| 4086963 |
Method of oxidizing hydrogen sulfide |
May. 2, 1978 |
| 4084640 |
Combined combustion for in-situ retorting of oil shales |
Apr. 18, 1978 |
| 4083604 |
Thermomechanical fracture for recovery system in oil shale deposits |
Apr. 11, 1978 |
| 4083404 |
Oil recovery process utilizing air and superheated steam |
Apr. 11, 1978 |
| 4082146 |
Low temperature oxidation of hydrogen sulfide in the presence of oil shale |
Apr. 4, 1978 |
| 4076312 |
Method and apparatus for retorting oil shale at subatmospheric pressure |
Feb. 28, 1978 |
| 4072350 |
Multi-stage method of operating an in situ oil shale retort |
Feb. 7, 1978 |
| 4065183 |
Recovery system for oil shale deposits |
Dec. 27, 1977 |
| 4063780 |
Method of recovering liquid and gaseous products of oil shale |
Dec. 20, 1977 |
| 4062404 |
Method for in situ combustion |
Dec. 13, 1977 |
| 4061190 |
In-situ laser retorting of oil shale |
Dec. 6, 1977 |
| 4059308 |
Pressure swing recovery system for oil shale deposits |
Nov. 22, 1977 |
| 4057293 |
Process for in situ conversion of coal or the like into oil and gas |
Nov. 8, 1977 |
| 4047760 |
In situ recovery of shale oil |
Sep. 13, 1977 |
| 4043597 |
Multiple level preparation of oil shale retort |
Aug. 23, 1977 |
| 4043598 |
Multiple zone preparation of oil shale retort |
Aug. 23, 1977 |
| 4043595 |
In situ recovery of shale oil |
Aug. 23, 1977 |
| 4037657 |
Process for recovery of carbonaceous materials from subterranean deposits by in situ processing |
Jul. 26, 1977 |
| 4036299 |
Enriching off gas from oil shale retort |
Jul. 19, 1977 |
| 4032193 |
Coal disaggregation by basic aqueous solution for slurry recovery |
Jun. 28, 1977 |
| 4027917 |
Method for igniting the top surface of oil shale in an in situ retort |
Jun. 7, 1977 |
| 4026356 |
Method for in situ gasification of a subterranean coal bed |
May. 31, 1977 |
| 4019577 |
Thermal energy production by in situ combustion of coal |
Apr. 26, 1977 |
| 4015664 |
Shale oil recovery process |
Apr. 5, 1977 |
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