陈堡油田K2t1^3油藏隔夹层分布对开发效果的影响

Effect of intercalated beds on development efficiency of K2t13 pool in Chengbao oilfield

隔夹层的存在改变了整个地层渗流场的分布，使渗流（油水运动）发生变化。根据陈堡油田K2t1^3油藏隔夹层的分类、电性特征及其分布特征，结合生产动态资料。根据隔夹层的岩性、厚度、平面分布的连续性。将其分为稳定夹层、较稳定夹层和不稳定夹层三种类型。分布稳定的隔夹层可将油层上下分成多个独立的流动单元，而不稳定隔夹层越多，油层上下具有水动力联系，其间油水运动也就越复杂，对开发效果的影响越大。应用隔夹层的研究成果指导实施了水平井开发以及部分油井的调补层。取得了较好的开发效果。

Intercalated beds may change the distribution of seepage field of the whole strata,thus changing the seepage.On the basis of electrical character and distribution range,and by reference to the dynamic data of production,intercalated beds in K2t13 pool.Chengbao oil field,are classified into stable,relatively stable and unstable ones,according to the lithology,thickness,the planar distribution.The oil pay with stable intercalated bed can be divided into several inde- pendent fluid units.But the more the unstable intercalated bed,the more complex of oil and gas movement.The reason is that the hydrodynamic forces within the oil pay are con- nected,whieh bring about a bad development effect.The re- search results are also applied to analyze the development effect of horizontal well and the adjustment horizons in par- tial oil pay.