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Class Information
Number: 299/2
Name: Mining or in situ disintegration of hard material > Tunnel recovery of fluid material
Description: Process or apparatus comprising recovering valuable material in the fluid state from the earth and including (1) process steps involving the construction or use of a horizontal passage in which a human may work or (2) the structure of a horizontal passage in which a human may work.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7419223 |
System and method for enhancing permeability of a subterranean zone at a horizontal well bore |
Sep. 2, 2008 |
| 7163063 |
Method and system for extraction of resources from a subterranean well bore |
Jan. 16, 2007 |
| 6824224 |
Coalbed methane extraction process |
Nov. 30, 2004 |
| 6491096 |
Two phase heat generation system and method |
Dec. 10, 2002 |
| 6044907 |
Two phase heat generation system and method |
Apr. 4, 2000 |
| 5228517 |
Method and apparatus for collecting percolating fluids and apparatus for the installation thereof |
Jul. 20, 1993 |
| 5082054 |
In-situ tuned microwave oil extraction process |
Jan. 21, 1992 |
| 5024487 |
Method of creating an underground batch retort complex |
Jun. 18, 1991 |
| 4776638 |
Method and apparatus for conversion of coal in situ |
Oct. 11, 1988 |
| 4611856 |
Two-level, horizontal free face mining system for in situ oil shale retorts |
Sep. 16, 1986 |
| 4611855 |
Multiple level methane drainage method |
Sep. 16, 1986 |
| 4607888 |
Method of recovering hydrocarbon using mining assisted methods |
Aug. 26, 1986 |
| 4595239 |
Oil recovery mining apparatus |
Jun. 17, 1986 |
| 4585063 |
Oil shale retorting and retort water purification process |
Apr. 29, 1986 |
| 4577908 |
Method for in situ shale oil recovery |
Mar. 25, 1986 |
| 4560206 |
Method for explosively expanding a pillar |
Dec. 24, 1985 |
| 4560205 |
Method for control of geometry of fragmented mass in an situ oil shale retort |
Dec. 24, 1985 |
| 4552409 |
In situ oil shale retort with controlled permeability for uniform flow |
Nov. 12, 1985 |
| 4545622 |
Method of rubblization for in-situ oil shale processing |
Oct. 8, 1985 |
| 4533182 |
Process for production of oil and gas through horizontal drainholes from underground workings |
Aug. 6, 1985 |
| 4533181 |
Method for forming uniform flow rubble bed |
Aug. 6, 1985 |
| 4531783 |
Stability control in underground workings adjacent an in situ oil shale retort |
Jul. 30, 1985 |
| 4505516 |
Hydrocarbon fuel recovery |
Mar. 19, 1985 |
| 4502733 |
Oil mining configuration |
Mar. 5, 1985 |
| 4501445 |
Method of in-situ hydrogenation of carbonaceous material |
Feb. 26, 1985 |
| 4489983 |
Blasthole spacing for control of particle size |
Dec. 25, 1984 |
| RE31677 |
Process for recovery of carbonaceous materials from subterranean deposits |
Sep. 18, 1984 |
| 4466668 |
Method of forming an in situ oil shale retort in formation with joints |
Aug. 21, 1984 |
| 4463988 |
Horizontal heated plane process |
Aug. 7, 1984 |
| 4463987 |
System for undersea recovery of hydrocarbons |
Aug. 7, 1984 |
| 4460218 |
Characterization of in situ oil shale retorts prior to ignition |
Jul. 17, 1984 |
| 4458945 |
Oil recovery mining method and apparatus |
Jul. 10, 1984 |
| 4458944 |
Formation of in situ oil shale retort in plural steps |
Jul. 10, 1984 |
| 4458946 |
Secondary oil shale recovery technique |
Jul. 10, 1984 |
| 4454916 |
In-situ combustion method for recovery of oil and combustible gas |
Jun. 19, 1984 |
| 4453769 |
In situ oil shale retort having horizontal voids with side pillars |
Jun. 12, 1984 |
| 4452489 |
Multiple level methane drainage shaft method |
Jun. 5, 1984 |
| 4449753 |
Method for bulking full a retort |
May. 22, 1984 |
| 4448249 |
Method of in situ oil shale retort ignition with oxygen control |
May. 15, 1984 |
| 4447090 |
Process for forming an in situ oil shale retort |
May. 8, 1984 |
| 4444433 |
Method for forming an in situ oil shale retort in differing grades of oil shale |
Apr. 24, 1984 |
| 4444256 |
Method for inhibiting sloughing of unfragmented formation in an in situ oil shale retort |
Apr. 24, 1984 |
| 4443036 |
Explosive expansion of formation in lifts for forming an in situ oil shale retort |
Apr. 17, 1984 |
| 4443037 |
Method for controlling void fraction distribution in an in situ oil shale retort |
Apr. 17, 1984 |
| 4441760 |
Method for closing a drift between adjacent in situ oil shale retorts |
Apr. 10, 1984 |
| 4441759 |
In situ oil shale retort system |
Apr. 10, 1984 |
| 4440447 |
Method for forming an in situ oil shale retort with explosive expansion towards a horizontal free face |
Apr. 3, 1984 |
| 4440446 |
Method for forming a module of in situ oil shale retorts |
Apr. 3, 1984 |
| 4440445 |
Fluid outlet at the bottom of an in situ oil shale retort |
Apr. 3, 1984 |
| 4440444 |
Method for controlling void in an in situ oil shale retort |
Apr. 3, 1984 |
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