【摘要】 珠江口盆地断裂比较发育,大多数二级构造带及其圈闭均与断层有关,认识断层与油气运聚的关系是正确评价构造带和圈闭的前提。用断层封堵分析法对珠江口盆地与断层有关的构造圈闭研究认为,断层一侧封堵盘的岩性是断层封堵与否的关键,若为泥岩形成油气聚集,砂岩则造成油气横穿断层或"之"字形向上运移,形成阶状油藏、多层状油藏或遭散失。经分析认为白云凹陷北坡是盆地内一个重要的勘探领域,翘倾半背斜是一个重要勘探圈闭类型。更多还原

【Abstract】 Faults are well developed in the eastern Pearl River Mouth Basin (PRMB).Most of the second - order structure belts and their traps are related to faults.It is prerequisite for proper appraisal of the belts and traps that the relationship between the faults and the hydrocarbon migration and accumulation is understood correctly.The analysis of fault scaling and case study in the eastern PRMB indicate the lithologic condition of the fault seal side is the key factor to fault scaling.The mudstone seal forms hydrocarbon accumulation.The juxtaposed sandstone contact cross the fault makes petroleum migrate upward across the fault or in the shape of S curvr along it,and results in the terace reservoirs and layer reservoirs.Therefore it is considered that the north slope in Baiyun depression ia an important area for petroleum exploration in the eastern PRMB and the tilted half-anticline a significant target for further oil hunting.更多还原