Influence factors for tapping positive rhythm thick oil reservoir potential with horizontal wells 水平井挖掘正韻律厚油層潛力影響因素分析
This paper studies the relationship between improved recovery efficiency of positive rhythm reservoir with different heterogeneity variation factor and the polymer injection amount , and calculates the economic index of different polymer injection amount by using polymer flooding economic model 本文研究了正韻律不同非均質變異系數油層采收率提高值與聚合物用量的關系,并利用聚合物驅經濟模型計算了不同聚合物用量下聚合物驅油的經濟指標。
Research section braided distributary channel sandstone is mostly positive rhythm , and high porosity and seepage rate in its central - top section , low seepage rate kalk interbed in its bottom . underwater distributary channel sandstone is relatively homogeneous positive rhythm , high porosity and seepage rate in its bottom , its top low . distributary mouth bar sandstone is complex rhythm , many interbeds inside 研究區宏觀非均質性特點為:研究區辮狀分流河道砂體以正韻律為主,高孔、滲帶在砂體中上部,底部常存在低滲透率鈣質夾層;水下分流河道砂體為較均質的正韻律,下部孔滲高,上部孔滲變小,分流河口壩砂體為復合韻律,砂體內部夾層多。