Abstract：In the exploration of faulted basins lacking wells,source rocks and their hydrocarbon generation potential should be determined first.However,due to the lack of drilling data in the Sag Wenchang B,conventional geochemical reservoir formation evaluation methods such as organic geochemistry,organic petrology,and reservoir geochemistry do not work.Therefore,we propose a petroleum accumulation seismic analysis method for the western part of the Pearl River Mouth Basin,which is hydrocarbon source-rock identification for under-explorated areas with very little drilling data.Combining theoretical research and exploration practice,this paper summarizes a new idea of petroleum accumulation seismology.Based on modern hydrocarbon reservoir formation theory,key factors of hydrocarbon accumulation in the study area are analyzed on seismic data.The process and modes of hydrocarbon reservoir formation are revealed,and the distribution of hydrocarbon reservoirs is accurately predicted.According to our research results,high-quality source rocks of middle-deep lacustrines in the Formation Wenchang have high abundance of organic matter (type Ⅰ to Ⅱ1).This great potential zone covers 110 km2 with NE-trending long strips parallel to the South Pearl River Fault,which becomes a new exploration zone in the Pearl River Basin.
周家雄, 胡高伟, 邓勇, 李辉, 徐涛, 周刚. 利用地震成藏学研究断陷湖盆油气成藏关键要素[J]. 石油地球物理勘探, 2019, 54(5): 1141-1150.
ZHOU Jiaxiong, HU Gaowei, DENG Yong, LI Hui, XU Tao, ZHOU Gang. A study of key factors of hydrocarbon accumulation in a faulted basin based on petroleum-accumulation seismology. Oil Geophysical Prospecting, 2019, 54(5): 1141-1150.
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