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应用含油气系统理论与方法,采用成因评价法,将地质分析与模拟计算、三级层序地层分析与地质建模、二维地震资料与三维地震资料以及“点、线、面”(钻井、地震剖面、三级层序)资料及研究成果有机结合,按半地堑三级层序分析确定生烃参数,按半地堑不同层系(组)分析确定生油边界和生油中心,根据石油地质条件不同分时期选取运聚系数,计算了珠一坳陷不同时期各半地堑生烃层序的生烃量和不同时期各半地堑的油、气资源量,并根据生烃强度、资源量和资源丰度等指标对区内10个半地堑油气资源潜力进行了评价,其结果再次证明了珠江口盆地是中国近海剩余油气资源量较大的地区之一。
Applying the theories and methods of oil and gas bearing system, using the method of genetic evaluation, this paper combines the geological analysis and simulation calculation, three-level sequence stratigraphy and geological modeling, two-dimensional seismic data and three-dimensional seismic data and the “point, line, surface” Drilling, seismic profile, third-order sequence) and organic combination of research results, according to the third-order sequence analysis of semi-graben to determine the hydrocarbon generation parameters, according to different layers of semi-graben (group) to determine the oil boundary and the oil center According to the selection of migration and accumulation coefficient in different sub-periods of petroleum geology, the hydrocarbon generation amount of each hydrocarbon-producing sequence and the oil and gas resources of each half-graben in different periods of the Zhu-1 depression were calculated. Hydrocarbon intensity, resource abundance and resource abundance. The results also proves once again that the Pearl River Mouth Basin is one of the regions with large residual oil and gas resources in China’s offshore areas.