Title: Favorable Coastal Gas Reservoir Forming Conditions and Exploration Direction in Qiongdongnan Basin of South China Sea
Abstract: From the view of special geological conditions and its effect on natural gas pool-forming,it was proposed that the transgression onset since the early Oligocene in Qiongdongnan Basin was considered to be different from adjacent basins of the northern continental margin of South China Sea.The distinct marine depositional system of Oligocene rifting basin-fill phase was regarded as the most crucial factor for natural gas migration and accumulation throughout the basin.In combination with the pool-forming element analysis of Yacheng13-1 Gas Field and Baodao19-2 gas bearing structure,the advantages of offshore natural gas pool-forming conditions for the third member of Lingshui Formation and the first member of Sanya Formation were discussed in depth and then offshore natural gas pool-forming pattern was put forward.Finally,the exploration direction,and three potential trap belts with structural,stratigraphic and lithologic complex types in the shallow waters and favorable domain in the deepwaters of the basin are proposed.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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