地层超覆油气藏砂体预测理论研究及应用

Research and Application of Sand Body Prediction Theory for Stratigraphic Onlap Hydrocarbon Reservoir

随着中国陆上油田勘探的不断深入,储量比较丰富的地层超覆油气藏已成为油田勘探的主要对象之一,在这类油气藏中砂体分布预测精度决定钻探成功率,但目前关于砂体分布特征的预测一直不够准确,制约了这类油气藏的勘探。针对地层超覆油气藏中有关砂体分布预测精度低的问题,通过对地层超覆油气藏的三种典型简化模型的深入研究分析,形成了一种比较有效的基于楔状理论的砂体厚度预测方法,该方法在苏北盆地的应用表明其具有较高的预测精度。

With the exploration of onshore oilfield in China deepened, stratigraphic onlap hydrocarbon reservoir with abundant reserves has become one of the main objects of oilfield exploration. In this kind of reservoir, the prediction accuracy of the sand body distribution which determines the drilling success ratio is not high enough at present. The problem restricts the exploration of the kind of reservoir. Aiming at the problem, through in - depth research on and analysis of the three typical simplified models of stratigraphic onlap hydrocarbon reservoir, a wedge theory based effective prediction method has been developed and the effect of its application in Northern Jiangsu basin shows that it has high prediction precision.