| |
 |
|
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 |
| 4436344 |
In situ retorting of oil shale with pulsed combustion |
Mar. 13, 1984 |
| 4435017 |
In situ oil shale retort with differing upper and lower void fractions |
Mar. 6, 1984 |
| 4435016 |
In situ retorting with flame front-stabilizing layer of lean oil shale particles |
Mar. 6, 1984 |
| 4425967 |
Ignition procedure and process for in situ retorting of oil shale |
Jan. 17, 1984 |
| 4423906 |
Method of forming an in situ oil shale retort |
Jan. 3, 1984 |
| 4423907 |
In situ recovery of shale oil |
Jan. 3, 1984 |
| 4423908 |
Formation of an in situ oil shale retort with control of mounding |
Jan. 3, 1984 |
| 4410216 |
Method for recovering high viscosity oils |
Oct. 18, 1983 |
| 4402550 |
Method for forming an in situ oil shale retort with controlled seismic vibration |
Sep. 6, 1983 |
| 4397502 |
Two-pass method for developing a system of in situ oil shale retorts |
Aug. 9, 1983 |
| 4396231 |
Horizontal free face blasting for minimizing channeling and mounding |
Aug. 2, 1983 |
| 4393934 |
Conditioning a coal seam prior to in-situ gasification |
Jul. 19, 1983 |
| 4391467 |
System for producing a uniform rubble bed for in situ processes |
Jul. 5, 1983 |
| 4387768 |
Modified in situ retorting of oil shale |
Jun. 14, 1983 |
| 4385784 |
Method for forming an in situ oil shale retort |
May. 31, 1983 |
| 4384614 |
Method of retorting oil shale by velocity flow of super-heated air |
May. 24, 1983 |
| 4384613 |
Method of in-situ retorting of carbonaceous material for recovery of organic liquids and gases |
May. 24, 1983 |
| 4381124 |
Method of mining an oil deposit |
Apr. 26, 1983 |
| 4379592 |
Method of mining an oil-bearing bed with bottom water |
Apr. 12, 1983 |
| 4379593 |
Method for in situ shale oil recovery |
Apr. 12, 1983 |
| 4379591 |
Two-stage oil shale retorting process and disposal of spent oil shale |
Apr. 12, 1983 |
| 4379590 |
Ventilation air and process air distribution for in situ oil shale retorts |
Apr. 12, 1983 |
| 4378841 |
Ignition technique for an in situ oil shale retort |
Apr. 5, 1983 |
| 4378949 |
Production of shale oil by in-situ retorting of oil shale |
Apr. 5, 1983 |
| 4372615 |
Method of rubbling oil shale |
Feb. 8, 1983 |
| 4370003 |
Temporary gas seal for gas level drift of an in situ oil shale retort |
Jan. 25, 1983 |
| 4368920 |
Method of thermal-mine working of oil reservoir |
Jan. 18, 1983 |
| 4368921 |
Non-subsidence method for developing an in situ oil shale retort |
Jan. 18, 1983 |
| 4367901 |
Method for forming an in situ oil shale retort |
Jan. 11, 1983 |
| 4366987 |
Method for forming an in situ oil shale retort with horizontal free faces |
Jan. 4, 1983 |
| 4366986 |
Controlled retorting methods for recovering shale oil from rubblized oil shale and methods for making permeable masses of rubblized oil shale |
Jan. 4, 1983 |
| 4360233 |
Method of bulking an in situ oil shale retort substantially full of fragmented shale |
Nov. 23, 1982 |
| 4359246 |
In situ oil shale retort with non-uniformly distributed void fraction |
Nov. 16, 1982 |
| 4357051 |
Withdrawal of gases and liquids from an in situ oil shale retort |
Nov. 2, 1982 |
| 4353598 |
Method of blasting pillars with vertical blastholes |
Oct. 12, 1982 |
| 4349227 |
Mining system for in situ oil shale retorts |
Sep. 14, 1982 |
| 4346935 |
Method for fragmenting oil shale formation |
Aug. 31, 1982 |
| 4345794 |
Placement of explosive for forming in situ oil shale retort |
Aug. 24, 1982 |
| 4336966 |
Cratering in the deep cratering region to form an in situ oil shale retort |
Jun. 29, 1982 |
| 4333684 |
Method of uniform rubblization for limited void volume blasting |
Jun. 8, 1982 |
| 4326751 |
Blasting to a horizontal free face with mixing of fragments |
Apr. 27, 1982 |
| 4326752 |
Method for forming an in situ oil shale retort |
Apr. 27, 1982 |
| 4320994 |
Preparation of grout for stabilization of abandoned in-situ oil shale retorts |
Mar. 23, 1982 |
| 4315656 |
Method for reducing porosity of rubblized oil shale |
Feb. 16, 1982 |
| 4315657 |
Gas seal for an in situ oil shale retort and method of forming thermal barrier |
Feb. 16, 1982 |
| 4303274 |
Degasification of coal seams |
Dec. 1, 1981 |
| 4303273 |
In situ oil shale retort with a generally T-shaped vertical cross section |
Dec. 1, 1981 |
| 4302051 |
Open surface flotation method |
Nov. 24, 1981 |
| 4300800 |
Method of rubbling a pillar |
Nov. 17, 1981 |
| 4296969 |
Thermal recovery of viscous hydrocarbons using arrays of radially spaced horizontal wells |
Oct. 27, 1981 |
|
|
|
