COMPARISON OF GAS ACCUMULATION BETWEE N YA13-1 ANDYA21-1 OF YANAN DEPRESSION IN QIONGDONGNAN BASIN

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  • (China University of Geosciences, Wuhan 430074, China)

Received date: 2003-02-25

  Revised date: 2003-03-29

  Online published: 2003-04-20

Abstract

 YA 13-1 gas field, the biggest offshore gas field in China, is located in the w est of Yanan depression.In the southeast, there lies YA 21-1 structure. In g eneral, YA 21-1 structure have “three poor” for gas accumulation, that is, so urce rock, reservoir and energy field. The natural gas of YA 13-1 gas field co mes from Yachen and Lingshui formation of Yinggehai and Qiongdongnan basin. How ever, the source rock of YA 21-1 comes from Ledong depression, that is the firs t poor.The reservoirs of YA 21-1 is worse than YA 13-1, that is the second poor. Regarding the energy fields, it shows that the caps rock and reservoirs ha ve over-pressure, that is the third poor.So, the source rock, reservoirs and  energy fields controlled the gas accumulation of YA 21-1 structure.

Cite this article

WANG Min-fang . COMPARISON OF GAS ACCUMULATION BETWEE N YA13-1 ANDYA21-1 OF YANAN DEPRESSION IN QIONGDONGNAN BASIN[J]. Natural Gas Geoscience, 2003 , 14(2) : 126 -129 . DOI: 10.11764/j.issn.1672-1926.2003.02.126

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