新疆火烧山油田化学驱油配方研究

Study on chemical flooding formulas for Huoshaoshan Oilfield in Xinjiang

随着火烧山油田注水开发的深入,生产井含水率逐步上升,拟采用化学驱油方法减缓含水上升趋势。针对火烧山油田的条件,评价了所选驱油剂的驱油性能,利用物理模拟驱油实验测定了不同化学驱油剂配方的采收率增值,并绘制采收率增值等值图,确定了化学驱油方式,得到了2个能够较大幅度提高采收率的化学驱油剂配方。在此基础上,通过改变配方成分比例,对配方进行进一步优化,为火烧山油田降低生产井含水率、稳定生产提供了充足的技术储备。

As the water injection development of Huoshaoshan Oilfield in Xinjiang goes further, the water cut of production wells is raising gradually. Chemical flooding is planed to use in Huoshaoshan Oilfield to lower the water cut. According to the condition of this oilfield, a lot of experiments have been done. The qualities of oil displacement agents have been evaluated and increment of oil recovery of every formula has been gotten by physical simulation. The contour diagram of increment of oil recovery ratio can be drawn. Two better formulas were selected and optimized finally. This study can provide some ways of chemical flooding to lower the water cut and keep steady production.