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1 Introduction The brittleness of the shale mineral content has important influence on mud shale reservoir exploitation,high brittleness mineral content areas are generally believed to the benefit of the fracture section.But brittleness mineral content not on behalf of the rock strength,some brittle
1 Introduction The brittleness of the shale mineral content has important influence on mud shale reservoir exploitation, high brittleness mineral content areas are generally believed to the benefit of the fracture section.But brittleness mineral content not on behalf of the rock strength, some brittle