Trap types of the study area are mainly lithologic and structural lithologic traps.
岩性圈闭和构造岩性圈闭面积大、含气层段多，成为该区主要的圈闭类型。
ResultsSand architecture of fan delta, subaqueous fan associated with main mass sources are outlined, helping to identify potential structural, lithologic and composite traps.
结果在凹陷内圈定了与主河口有关的扇三角洲前缘、水下扇等骨架砂体的展布，识别出了构造、岩性及复合等多种可能的有利圈闭。
The faults were the important migration pathway of oil and gas, and controlled the formation of structural traps and lithologic traps.
断裂是油气运移的重要通道，控制着局部构造圈闭的形成并为岩性圈闭提供侧向遮挡条件。
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