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天然气地球科学 2003
CRITICAL CONDITION FOR GAS ACCUMULATION IN THE DEEP BASIN TRAP AND PHYSICAL MODELING
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Abstract:
Deep basin gas reservoir is a kind of gas reservoir with tight sandstone and formed in a unique mechanism Exploration practice and physical modeling results show that the formation of deep basin gas reservoir is controlled by the critical condition which can be expressed quantitatively in the size of the pore throat of the sandstone reservoir Can only the gas accumulate in the tight sandstone to form deep basin gas reservoir if its expansion pressure in the underground is larger than the sum of the capil...