Microstructure of laboratory and nuclear explosively deformed gas-bearing sandstones
Conference
·
OSTI ID:7213382
Pore structure and microfracturing is investigated in low permeability sandstones. An intricate network of clay minerals between grains causes the average pore size to be small in the undeformed rock. Laboratory loading causes sample compaction, short, unconnected cracks within grains, and frequent grain boundary cracks. Explosively deformed samples exhibit macroscopic fractures extending the length of the sample and occasional narrow transgranular cracks. In both, the clay matrix exhibits compaction parallel to the direction of maximum principal stress.
- Research Organization:
- California Univ., Livermore (USA). Lawrence Livermore Lab.
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 7213382
- Report Number(s):
- UCRL-79021; CONF-770706-29
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
03 NATURAL GAS
030900* -- Natural Gas-- Artificial Stimulation
Plowshare-- (-1989)
CLAYS
CONTAINED EXPLOSIONS
CRACKS
CRYSTAL STRUCTURE
ELECTRON MICROSCOPY
ENHANCED RECOVERY
EXPLOSIONS
EXPLOSIVE STIMULATION
GEOLOGIC DEPOSITS
GRAIN BOUNDARIES
MICROSCOPY
MICROSTRUCTURE
MINERALS
NATURAL GAS DEPOSITS
NATURAL GAS WELLS
NUCLEAR EXPLOSIONS
PERMEABILITY
PLOWSHARE PROJECT
POROSITY
RESERVES
RIO BLANCO EVENT
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
STRESSES
UNDERGROUND EXPLOSIONS
WELL STIMULATION
WELLS
030900* -- Natural Gas-- Artificial Stimulation
Plowshare-- (-1989)
CLAYS
CONTAINED EXPLOSIONS
CRACKS
CRYSTAL STRUCTURE
ELECTRON MICROSCOPY
ENHANCED RECOVERY
EXPLOSIONS
EXPLOSIVE STIMULATION
GEOLOGIC DEPOSITS
GRAIN BOUNDARIES
MICROSCOPY
MICROSTRUCTURE
MINERALS
NATURAL GAS DEPOSITS
NATURAL GAS WELLS
NUCLEAR EXPLOSIONS
PERMEABILITY
PLOWSHARE PROJECT
POROSITY
RESERVES
RIO BLANCO EVENT
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
STRESSES
UNDERGROUND EXPLOSIONS
WELL STIMULATION
WELLS