tight clastic rock gas pool
Volcanic Rock Gas Reservoir
available gas source rock
coal and rock with gas content
evaluating of cap rock of oil and gas
gas source rock correlation
source rock of coal-formed gas
flexible rock and special flexible rock
from thick rock salt to thin rock salt
hard rock interbedded with soft rock
metamorphic rock of the original rock
rock damage rock breaking
rock suite and rock group
coal related gas source of natural gas hydrate
correlation of deep basin gas with Upper Paleozoic gas accumulation