Genesis Mechanism of Low Resistivity in the Lower Cambrian Qiongzhusi Formation Shale and Its Response Characteristics to Pore Structure - Take the Z201 Well as an Example.

In summary, with the increasing degree of thermal evolution and the occurrence of OM graphitization, the mineral composition of the shale shows an overall trend of increasing quartz and decreasing clay mineral contents, a result which is consistent with the natural sequence samples, indicating that a ′′high quartz-low clay” content is an important indicator of thermal evolution within the study area.

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