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留楚构造带位于冀中坳陷饶阳凹陷中南部 ,是华北油田 1998至 1999年的重点滚动勘探开发区块。该区生储盖层配套 ,纵向上多层系、平面上普遍含油 ,构造两翼含油层位老且单一 ,核部含油层位新且多 ,断层为主要供油通道 ,油层分布垂直断层剖面上呈牙刷状、平面上呈窄条状。据此 ,认为留楚构造带还有较大的增储潜力。主要从 5个方面论述留楚地区油气富集规律和成藏机理 :两套生油岩为油藏形成提供了较丰富的油源 ;东抬地层与反向正断层配合形成多个构造圈闭 ;河流相沉积使东营组成为有利储盖组合 ;深切烃源岩的断层为油气垂向运移通道 ;构造、储集层、油源的有机配合形成留楚复式油气聚集。运用各种地质资料 ,分析储集层分布特征 ,结合油气分布找出滚动开发的有利潜力区 ,并通过已钻潜力区域总结出潜力类型 ,同时提出今后钻探的有利区域
The structural detachment of Liu-Chu is located in central-southern Raoyang Sag of Jizhong Depression. It is the key rolling exploration and development block of Huabei Oilfield from 1998 to 1999. In the area, the reservoirs and reservoirs are matched with a series of strata in the longitudinal direction and are generally oil-bearing in plane. The oil-bearing formation with two wings in the area is old and single with new and more oil-bearing layers in the core and faults as the main oil supply channels. Toothbrush-shaped, narrow strip on the plane. Based on this, it is believed that there is still a great potential for increasing reserves in the Liyu tectonic belt. Mainly from five aspects to discuss the accumulation of oil and gas enrichment laws and reservoirs in the reservoirs in both Chu and Chu areas: two sets of oil-bearing rocks provide abundant oil sources for the formation of oil reservoirs; and the East Uplift and reverse normal faults cooperate to form multiple structural traps ; River facies deposition makes Dongying formation favorable combination of reserves and caprock; the fault of deep source rock is vertical migration channel of oil and gas; the organic cooperation of structure, reservoir and oil source forms the accumulation of hydrocarbon in reservoirs. Using various geological data, analyzing the distribution characteristics of the reservoir, combining with the distribution of oil and gas to find out the favorable potential area for rolling development and summarizing the potential types through the potential drilling potential areas, and also presenting the favorable areas for drilling in the future