车镇凹陷车西洼陷油气富集规律

从车镇凹陷车西洼陷烃源岩、油气运移、构造及储集层等方面研究了油气的生成、运移和聚集和聚集规律，探讨了构造、烃源岩、沉降中心与油气富集的关系。油气向洼陷边坡侧向运移，呈放射状分布；环绕沉降中心分布的断层、岩现今点、线、面多种油气分布格局；沉降中心及沉积中心不一致，位于沉积中心附近的构造带油气最富集。可依据环带状与放射状构造的发育及相交关系、沉降中心与生油中心的位置关系、烃源层有机质丰度及储集层分布规律，寻找新的油气富集区。

Research on oil-gas enrichment rules in Chexi subsag of Chezhen sag

Oil-gas generation, migration and accumulation rules are studied and the relationship among structure, hydrocarbon source rocks, subsidence center and oil?gas enrichment is discussed from the aspects of the hydrocarbon source rocks, oil?gas migration, structure and reservoir in Chexi subsag of Chezhen sag. Oil and gas migrate laterally to the side slope of the subsag with radiation distribution; the strike of structural belts (including fault around subsidence center, lithologic pinchout, formation antidip and so on) is vertical (or intersects slantly) with nose?like structural belt, oil and gas distribute as ring?belt shaped; combination of radiation and ring?belt shaped distribution forms present oil?gas distribution pattern of point, line and surface many types; subsidence center is not identical to depocenter, the structural belt near the depocenter has best oil?gas enrichment. So new oil?gas enrichment area may be searched for based on development and intersection relationship of ring?belt and radiation shaped structure, location relationship of subsidence center and oil?generating center, organic matter abundance of hydrocarbon source beds and reservoir distribution rule.