东营凹陷油田水的油气运聚指向性研究

以东营凹陷油田水为研究对象，分析了油田水纵向和横向上的变化，研究了其油气聚集指向性．．结果表明，深层油田水矿化度高值区与成熟烃源岩层展布一致，这与深部烃源岩层长期水岩作用及临近的膏盐层有关：中浅层由于大气淡水作用及水岩交换时间短，油田水矿化度一般较低。受流体并常高压驱动，深部烃源岩层排出的高矿化度含烃流体发生离心运移，垂向上沿油源断层向上运移，在中浅层圈闭聚集成藏的同时，使储层油田水矿化度增高，中浅层油田水矿化度高值区与断裂带、砂体及鼻状构造带展布相吻合，也与已探明的油气藏分布相一致。因此，油田水矿化度低值区中的高值带是油气运聚的有利区带，对于中高勘探程度的舍油气盆地．追踪油田水高矿化度展布带是预测油气藏的一种新方法.

Research on hydrocarbon migration and accumulation directivity of field water in Dongying Sag

The vertical and lateral alternation of field water is analyzed and the directivity of hydrocarbon accumulation is researched,taking the field water of Dongying Sag as an example.Research results show that the distributed area of high-salinity field water in deep zone is corresponding with the mature source rocks,which is related to the long-range effect of water-rock interaction and conterminous salt rocks.Salinity of field water is relatively low in medium and shallow layers because of the effect of tellu...