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1 Introduction As new exploration domain for oil and gas,reservoirs with low porosity and low permeability have become a hotspot in recent years(Li Daopin,1997).With the improvement of technology,low porosity and low
1 Introduction As new exploration domain for oil and gas, reservoirs with low porosity and low permeability have become a hotspot in recent years (Li Daopin, 1997) .With the improvement of technology, low porosity and low