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Method for forming an in situ oil shale retort

Patent ·
OSTI ID:6349400
An in situ oil shale retort is formed in a subterranean formation containing oil shale, a horizontally extending void is excavated within the boundaries of the retort site leaving a zone of unfragmented formation above and/or below such a void. A crack is propagated in at least one of the zones of unfragmented formation along the side boundaries of the retort site and thereafter the zone of unfragmented formation is explosively expanded towards such a void for forming a fragmented permeable mass of formation particles in the retort. Such a fragmented permeable mass is retorted in situ to produce shale oil.
Assignee:
Occidental Oil Shale Inc
Patent Number(s):
US 4367901
OSTI ID:
6349400
Country of Publication:
United States
Language:
English

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Related Subjects

04 OIL SHALES AND TAR SANDS
040401* -- Oil Shales & Tar Sands-- In Situ Methods
True & Modified
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COMMINUTION
DECOMPOSITION
ENERGY SOURCES
ENHANCED RECOVERY
EXPLOSIVE FRACTURING
FOSSIL FUELS
FRACTURING
FUELS
IN-SITU PROCESSING
IN-SITU RETORTING
MATERIALS
MINERAL OILS
OIL SHALES
OILS
OPERATION
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PROCESSING
RECOVERY
RETORTING
SHALE OIL
VOIDS