Method for establishing a combustion zone in an in situ oil shale retort having a pocket at the top
Abstract
An in situ oil shale retort having a top boundary of unfragmented formation and containing a fragmented permeable mass has a pocket at the top, that is, an open space between a portion of the top of the fragmented mass and the top boundary of unfragmented formation. To establish a combustion zone across the fragmented mass, a combustion zone is established in a portion of the fragmented mass which is proximate to the top boundary. A retort inlet mixture comprising oxygen is introduced to the fragmented mass to propagate the combustion zone across an upper portion of the fragmented mass. Simultaneously, cool fluid is introduced to the pocket to prevent overheating and thermal sloughing of formation from the top boundary into the pocket.
- Inventors:
-
- 1904 Glenmont Dr., Bakersfield, CA 93309
- Issue Date:
- OSTI Identifier:
- 863521
- Patent Number(s):
- 4192552
- Assignee:
- Cha; Chang Y. (1904 Glenmont Dr., Bakersfield, CA 93309)
- Patent Classifications (CPCs):
-
E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21B - EARTH DRILLING, e.g. DEEP DRILLING
E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21C - MINING OR QUARRYING
- DOE Contract Number:
- ET-77-A-03-1848
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- method; establishing; combustion; zone; situ; oil; shale; retort; pocket; top; boundary; unfragmented; formation; containing; fragmented; permeable; mass; space; portion; establish; established; proximate; inlet; mixture; comprising; oxygen; introduced; propagate; upper; simultaneously; cool; fluid; prevent; overheating; thermal; sloughing; permeable mass; fragmented permeable; fragmented mass; situ oil; shale retort; combustion zone; oil shale; upper portion; unfragmented formation; mixture comprising; /299/166/
Citation Formats
Cha, Chang Y. Method for establishing a combustion zone in an in situ oil shale retort having a pocket at the top. United States: N. p., 1980.
Web.
Cha, Chang Y. Method for establishing a combustion zone in an in situ oil shale retort having a pocket at the top. United States.
Cha, Chang Y. Tue .
"Method for establishing a combustion zone in an in situ oil shale retort having a pocket at the top". United States. https://www.osti.gov/servlets/purl/863521.
@article{osti_863521,
title = {Method for establishing a combustion zone in an in situ oil shale retort having a pocket at the top},
author = {Cha, Chang Y},
abstractNote = {An in situ oil shale retort having a top boundary of unfragmented formation and containing a fragmented permeable mass has a pocket at the top, that is, an open space between a portion of the top of the fragmented mass and the top boundary of unfragmented formation. To establish a combustion zone across the fragmented mass, a combustion zone is established in a portion of the fragmented mass which is proximate to the top boundary. A retort inlet mixture comprising oxygen is introduced to the fragmented mass to propagate the combustion zone across an upper portion of the fragmented mass. Simultaneously, cool fluid is introduced to the pocket to prevent overheating and thermal sloughing of formation from the top boundary into the pocket.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 1980},
month = {Tue Jan 01 00:00:00 EST 1980}
}