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高邮凹陷刘五舍地区构造特征复杂、地层超覆明显,且多个方向的物源在此交汇,造成区内戴一段油藏具有“圈闭小、类型多、分布散”的特点。通过深化对高邮凹陷东部地区构造、沉积特征,对其油气分布和对油气的控制规律进行了系统的分析。研究表明,E_2d_1油气成藏受(扇)三角洲前缘水下分流河道砂体的发育程度与展布特征所控制;北部不整合面及砂体侧向的输导方式控制了油气的运移;东南部大断裂带附近是油气的主要聚集场所;构造及砂体的发育共同控制了油气的富集与成藏。
The structural features of Liu Wushe area in the Gaoyou Sag are complex and their strata are overtopped obviously. The sources of multiple directions converge here, resulting in the characteristics of “small traps, more types and scattered” reservoirs in Dai I reservoir. By furthering the tectonic and sedimentary characteristics of the eastern Gaoyou sag, the hydrocarbon distribution and control laws of oil and gas are systematically analyzed. The results show that the hydrocarbon accumulation in E 2 d 1 is controlled by the development degree and distribution characteristics of subaqueous distributary channel sand bodies in the front of the (fan) delta. The unconformity in the north and the lateral conduction mode of sand body control the migration of oil and gas. Near the large southeast fault zone is the main accumulation site of oil and gas. The development of tectonics and sandbody jointly controlled the accumulation and accumulation of oil and gas.