【摘要】 近年来,盐定地区具有良好的油气发现,在多个含油气富集区建产,勘探开发潜力巨大。首次将长81段精细划分为两个砂体组,根据沉积背景和重矿物组合分析,认为研究区长81时期主要有北部和北西两个物源方向。通过分析研究区砂体沉积展布及圈闭成因,将砂岩顶面构造图与砂体展布图叠合,进行圈闭评价,得出研究区长81存在8个现实圈闭和2个评价圈闭,为下步有利区勘探和油田滚动开发提供依据。更多还原

【Abstract】 In recent years,a number of oil and gas have been discoveried in Yanding area and many oil-rich region have been exploited,showing great potential of exploration and development in Yanding area. The chang-81 member is firstly divided into chang-81 1and chang-82 1. Based on depositional setting and analysis on heavy mineral assemblages,it’s demonstrated that the source sediments were from two directions where are located in the north and northwest area. Combined with the sand body morphology and genesis of traps,folding the top surface frame map of sandstones and the sand body morphology map,the traps were evaluated. It suggested that 8 actual traps and 2 evaluation traps existed in Chang-81of the study area,providing foundation for further beneficial exploration and oil field progressive development.更多还原