利用塔河油田奥陶系油藏生产动态资料研究井间连通性

Study on production performance—based interweli connectivity of Ordovician pool in Tahe oilfieid

塔河油田奥陶系油藏属缝洞型底水驱动碳酸盐岩油藏,储层非均质性强,准确判断储层连通情况及发育情况是提高油藏开发效果的关键。通过对比分析S48井与T401井的原油产油量、含水和流体性质等生产动态特征发现,单井生产动态变化特征具有极其相似的变化趋势,说明两口井是相连通的,根据干扰试井资料加以验证了其准确性。利用生产动态资料研究井间连通性,方便快捷,这种方法为分析同类储层连通性提供了借鉴。

The Ordovician pool of Tahe oilfield is of fracture-cave type and carbonatite pool with bottom water drive,and the pool is of extremely heterogeneous.Therefore,it is the key to make clear the distribution and the internal connectivity of reservoirs to improve the development effect.Comparison with production,water cut and fluid characteristic and other dynamic characteristics of Well S48 and Well T401 suggests that the two wells are extremely similar in change trend of dynamic performances,which shows that the two wells are connected,and the data of well interference tests validate the conclusion.It is convenient and expeditious to study the in- terwell communication by using the dynamic performance da- ta.