鄂尔多斯盆地英旺油田长8储层非均质性研究

通过岩心分析、压汞试验等方法研究了英旺油田延长组长8储层的非均质特征,认为本区长8储层的层内、层间和平面非均质性及微观非均质性均比较强,其变化规律主要受沉积相带的控制,层内非均质性主要受沉积韵律和层内夹层影响,层间非均质性取决于层间隔层展布和储层性质变化,平面非均质性与砂体形态及接触关系密切相关.

Heterogeneity of Chang 8 reservoir in Yingwang Oilfield,Ordos Basin

The heterogeneity of Chang 8 reservoir of Yanchang Formation in Yingwang Oilfield is studied by core analysis,mercury penetration experiment and other methods.It is held that there is stronger innerbed,interbed,plane and microscopic heterogeneity in the reservoir,and it is controlled mainly by sedimentary facies zone.The innerbed heterogeneity is affected mainly by sedimentary rhythm and interlayers.The interbed heterogeneity is affected by the distribution of interlayers and the veriation of reservoir property.The plane heterogeneity is closely related with the morphology and contact relation of sand-bodies.Understanding the varying law of the reservoir heterogeneity can provide guidance for oilfield development,particularly for the potential tapping of remaining oil.