Importance of graptolite evolution and biostratigraphic calibration on shale gas exploration

doi:10.3969/j.issn.1672-7703.2019.01.001

Abstract

Abstract: Shale gas has realized industrial developing in the Sichuan Basin and its peripheral region, and has become one of the important resources for future natural gas production growth of China. The shale gas in the Sichuan Basin is produced from the Ordovician and Silurian strata which are deeply buried with high thermal evolution and complicated tectonic history, thus bring challenges to the shale gas exploration. Fortunately, the gas-producing black shale is rich in graptolite fossils. Paleontologists used the method of graptolite biostratigraphy to recognize the precise stratigraphic intervals of favorable gas-producing black shale in the Sichuan Basin using well-established high-resolution graptolite biostratigraphy, providing a critical tool to guide the exploration of the shale gas recourse in China.

Key words: graptolite, graptolitic shale, shale gas, biostratigraphy

CLC Number:

Zou Caineng, Gong Jianming, Wang Hongyan, Shi Zhensheng. Importance of graptolite evolution and biostratigraphic calibration on shale gas exploration[J]. China Petroleum Exploration, 2019, 24(1): 1-6.

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