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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 |
| 4266609 |
Method of extracting liquid and gaseous fuel from oil shale and tar sand |
May. 12, 1981 |
| 4265310 |
Fracture preheat oil recovery process |
May. 5, 1981 |
| 4265307 |
Shale oil recovery |
May. 5, 1981 |
| 4263969 |
Flame front control in underground combustion |
Apr. 28, 1981 |
| 4263970 |
Method for assuring uniform combustion in an in situ oil shale retort |
Apr. 28, 1981 |
| 4249602 |
Method of doping retort with a halogen source to determine the locus of a processing zone |
Feb. 10, 1981 |
| 4249603 |
Doping a retort with radioactive nuclides to determine the locus of a processing zone |
Feb. 10, 1981 |
| 4245865 |
Explosive expansion to a limited void with uniform scaled depth of burial |
Jan. 20, 1981 |
| 4243101 |
Coal gasification method |
Jan. 6, 1981 |
| 4243100 |
Operation of in situ oil shale retort with void at the top |
Jan. 6, 1981 |
| 4239283 |
In situ oil shale retort with intermediate gas control |
Dec. 16, 1980 |
| 4238136 |
Formation of in situ oil shale retort with void at the top |
Dec. 9, 1980 |
| 4230181 |
In situ method of processing bituminous coal |
Oct. 28, 1980 |
| 4230368 |
Method for displacing large blocks of earth |
Oct. 28, 1980 |
| 4227574 |
Locating the top of an in situ oil shale retort for ease of ignition |
Oct. 14, 1980 |
| 4224990 |
Method for flattening the combustion zone in an in situ oil shale retort by the addition of fuel |
Sep. 30, 1980 |
| 4223726 |
Determining the locus of a processing zone in an oil shale retort by effluent water composition |
Sep. 23, 1980 |
| 4220203 |
Method for recovering coal in situ |
Sep. 2, 1980 |
| 4218309 |
Removal of sulfur from shale oil |
Aug. 19, 1980 |
| 4210366 |
Method of detonating explosives for fragmenting oil shale formation toward a vertical free face |
Jul. 1, 1980 |
| 4205610 |
Shale oil recovery process |
Jun. 3, 1980 |
| 4202412 |
Thermally metamorphosing oil shale to inhibit leaching |
May. 13, 1980 |
| 4199026 |
Method for detecting underground conditions |
Apr. 22, 1980 |
| 4192381 |
In situ retorting with high temperature oxygen supplying gas |
Mar. 11, 1980 |
| 4191251 |
Process for recovering carbonaceous values from in situ oil shale retorting |
Mar. 4, 1980 |
| 4185693 |
Oil shale retorting from a high porosity cavern |
Jan. 29, 1980 |
| 4185692 |
Underground linkage of wells for production of coal in situ |
Jan. 29, 1980 |
| 4181361 |
Gas collection system for oil shale retort |
Jan. 1, 1980 |
| 4181177 |
Controlling shale oil pour point |
Jan. 1, 1980 |
| 4178039 |
Water treatment and heating in spent shale oil retort |
Dec. 11, 1979 |
| 4175490 |
Process for producing an underground zone of fragmented and pervious material |
Nov. 27, 1979 |
| 4174751 |
Method of breaking shale oil-water emulsion |
Nov. 20, 1979 |
| 4169506 |
In situ retorting of oil shale and energy recovery |
Oct. 2, 1979 |
| 4167291 |
Method of forming an in situ oil shale retort with void volume as function of kerogen content of formation within retort site |
Sep. 11, 1979 |
| 4167213 |
Method for determining the position and inclination of a flame front during in situ combustion of a rubbled oil shale retort |
Sep. 11, 1979 |
| 4163475 |
Determining the locus of a processing zone in an in situ oil shale retort |
Aug. 7, 1979 |
| 4162706 |
Determining the locus of a processing zone in an oil shale retort by monitoring pressure drop across the retort |
Jul. 31, 1979 |
| 4162808 |
In-situ retorting of carbonaceous deposits |
Jul. 31, 1979 |
| 4158467 |
Process for recovering shale oil |
Jun. 19, 1979 |
| 4156461 |
Decreasing hydrocarbon, hydrogen and carbon monoxide concentration of a gas |
May. 29, 1979 |
| 4153110 |
Ignition of fragmented oil shale below a sill pillar in an in situ oil shale retort |
May. 8, 1979 |
| 4153298 |
Removal of pillars from a void for explosive expansion toward the void |
May. 8, 1979 |
| 4151877 |
Determining the locus of a processing zone in a retort through channels |
May. 1, 1979 |
| 4150722 |
Determining the locus of a retorting zone in an oil shale retort by rate of shale oil production |
Apr. 24, 1979 |
| 4149752 |
Operation of an in situ oil shale retort |
Apr. 17, 1979 |
| 4149595 |
In situ oil shale retort with variations in surface area corresponding to kerogen content of formation within retort site |
Apr. 17, 1979 |
| 4148358 |
Oxidizing hydrocarbons, hydrogen, and carbon monoxide |
Apr. 10, 1979 |
| 4147388 |
Method for in situ recovery of liquid and gaseous products from oil shale deposits |
Apr. 3, 1979 |
| 4147389 |
Method for establishing a combustion zone in an in situ oil shale retort |
Apr. 3, 1979 |
| 4146272 |
Explosive placement for explosive expansion toward spaced apart voids |
Mar. 27, 1979 |
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