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分析了两江地区成熟源岩、良好盖层、断裂及水动力场分布与已发现油田的关系 .认为源岩、盖层、断裂、水动力场是油运聚成藏的主要控制因素 .该区主要油源岩为青山口组和嫩一段泥岩 ,其演化程度控制着油气聚集的数量 ;盖层控制着油聚集的数量和分布 ;断层是青山口组源岩向下伏泉头组断续发育的砂体条带和砂岩透镜体的运移通道 ;沉积水动力场的分布决定渗透层内流体的运动方向 .源岩成熟区、良好盖层分布区、断裂发育区和水动力场高水位向低水位急剧变化带的叠合带是油运聚成藏的有利场所 .
The relationship between mature source rocks, favorable caprocks, faults and hydrodynamic field distribution in the Liangjiang area and discovered oilfields is analyzed.The source rocks, cap rocks, faults and hydrodynamic fields are considered as the main controlling factors for oil accumulation The main source rocks are Qingshankou Formation and Nendei mudstone, and their evolution degree controls the amount of oil and gas accumulation. The cap rocks control the quantity and distribution of oil accumulation. The fault is the source rocks of the Qingshankou Formation that cut downwards toward the Xiaquanquan Formation And the migration channel of sandstone lens body.The distribution of sedimentary hydrodynamic field determines the direction of fluid flow in the permeable bed.The maturity of source rocks, the distribution of favorable caprock, the zone of fracture development and the high water level of hydrodynamic field The superimposed belt with sharply changing low water level is a good place for oil accumulation.