泌阳凹陷东南部油气初次运移及勘探远景

Primary Migration of Hydrocarbons and Exploration Prospect in the Southeastern Miyang Depression

通过压实曲线的分析,对泌阳凹陷东南部油气初次运移的动力条件和烃源岩埋藏史进行了研究。从油气运移的角度对该区的有利勘探区段进行了初步的评价。认为核二段Ⅱ砂组以上可望找到一定的未成熟或低成熟烃类资源,核三段Ⅲ砂组以下应是深部增储的最有利层段;南部陡坡带、东部下二门及其以南地区,西部鼻状构造带和北部泌78-云1井区,是有利的油气初次运移指向区。

According to the analysis of the compaction curves, primary reserches have been done for the dynamic conditions of the primary migration of the oil and gas and for the buried history of the source rock. A primary evolution to the favorable exploration play in this area has been given. In the exploration sections, Eh2~Ⅲ may be found some resources of unmaturity or lower maturity hydrocarbon, and the lower part of Eh3~Ⅲ may be the best section. In the exploration regions, the areas which include the southern slope, the eastern Xiaermen, the western nose-structure and the well areas of the well Mi78-Yun1 are favorable regions of the primary migration.