Petrographic Characterization and Maceral Controls on Porosity in Overmature Marine Shales: Examples from Ordovician-Silurian Shales in China and the U.S.

Figure 16

Log differential pore volume for Wufeng-Longmaxi shales derived from MICP. The -axis marked the pore diameter in the nanometer, and the -axis marked the log differential pore volume. Samples N8, N9, and N10 featured higher TOC contents than samples N2 to N8. The TOC contents of N8 to N10 are 2.98%, 3.39%, and 3.52%, respectively.