Geochemical characteristics and hydrocarbon generation potentials of Paleozoic source rocks in the Southern Yellow Sea basin

TAN Sizhe; CHEN Chunfeng; XU Zhenzhong; HOU Kaiwen; WANG Jun

doi:10.16562/j.cnki.0256-1492.2018.03.011

2018 Vol. 38, No. 3

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Article navigation > Marine Geology & Quaternary Geology > 2018 > 38(3): 116-124

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TAN Sizhe, CHEN Chunfeng, XU Zhenzhong, HOU Kaiwen, WANG Jun. Geochemical characteristics and hydrocarbon generation potentials of Paleozoic source rocks in the Southern Yellow Sea basin[J]. Marine Geology & Quaternary Geology, 2018, 38(3): 116-124. doi: 10.16562/j.cnki.0256-1492.2018.03.011

Citation:

TAN Sizhe, CHEN Chunfeng, XU Zhenzhong, HOU Kaiwen, WANG Jun. Geochemical characteristics and hydrocarbon generation potentials of Paleozoic source rocks in the Southern Yellow Sea basin[J]. Marine Geology & Quaternary Geology, 2018, 38(3): 116-124. doi: 10.16562/j.cnki.0256-1492.2018.03.011

Geochemical characteristics and hydrocarbon generation potentials of Paleozoic source rocks in the Southern Yellow Sea basin

Shanghai Branch of CNOOC Ltd., Shanghai 200335, China

Received Date: 19 January 2018

Revised Date: 12 April 2018

Publish Date: 28 June 2018

Abstract

Abstract

Marine Paleozoic deposits are widely distributed in the Southern Yellow Sea basin.As the regional geological survey suggests, there are four groups of source rocks, i.e. the muddy source rocks of the lower Cambrian Mufushan formation, muddy source rocks in the Gaojiabian formation of late Ordovician and Wufeng formation of early Silurian, lime source rocks in the lower Permian Qixia formation and muddy source rocks in the upper Permian Longtan-Dalong formation. In this paper, the source rocks systematically evaluated through analysis of its characteristics in petrology and geochemistry. Results show that the lower Cambrian and lower Permian source rocks have high organic abundance and hydrocarbon generation potential belonging to the better-best rank; the upper Permian source rocks, which have high abundance of organic matter, but mainly terrestrial in origin, are ranked as better source rocks; whereas the Ordovician-Silurian source rocks are on common level. Resources calculation suggests that the resource of natural gas might reach 27469×10⁸m³ in total in the basin.
- source rocks /
- resources potential /
- Paleozoic strata /
- Lower Yangtze /
- Southern Yellow Sea basin

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References

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