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Gas shales with a high gas content were drilled in the Lower Cambrian Lujiaping Formation in the northeastern Sichuan Basin, close to the Chengkou Fault in the Dabashan arc-like thrust fold belt. The equivalent vitrinite reflectance values of organic matters are over 4.0% Ro. The pore structures of the shales were investigated based on microscopy, field emission scanning electron microscopy (FESEM)...
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