【摘要】 以储层地质学、测井地质学、油气田开发地质学等相关原理为指导,通过对鄂尔多斯盆地WD地区长2油藏烃源岩的分布与演化、构造特征、沉积相与砂体展布特征、储层物性特征等成藏主控因素的系统研究,认为巨厚的烃源岩是油气成藏的基础;水下分流河道和河口坝微相是该区长2段有利的含油相带;隆起高部位是含油的有利构造部位;高闭合度的鼻状隆起对油气藏形成具有重要的控制作用;良好盖层是油气藏形成的重要条件。在此基础上优选出有利含油勘探区,对WD地区进一步的勘探开发提供指导。更多还原

【Abstract】 Guided by geology theories about reservoirs,logging and oil- gas field development,the paper makes a research on the main controlling factors of hydrocarbon accumulation in WD area in Ordos Basin,such as sandstone distribution features,physical characteristics of reservoirs and distribution,evolution,formation characteristics and sedimentary facies of source rock. The result indicates that 1) thick source rocks is the foundation of the hydrocarbon accumulation; 2) underwater distributary channel and debouch bar microfacies are the favorable oil- bearing facies in Chang 2 reservoir; 3) uplifts are rich in oil; 4) nose- shaped uplifts in high closure play an important role in reservoir forming; and 5) good cap rock is an important condition of reservoir forming. Takin conclusions above into consideration,the paper determines the favorable oil exploration area.更多还原