摘要
靖安油田白于山井区为超前注水开发油藏，经过近10年开发，油藏在较低的采出程度下呈现含水多方向快速上升、采油速度与同类型油藏相比较低的特征，常规注采调整难以改善开发效果，需要进行加密调整。应用数值模拟技术，对白于山加密调整试验区菱形反九点井网不同加密调整方式进行预测和优选，确定了提高采收率的3种加密方式，并在现场试验中取得较好效果。
The Baiyushan well-district in Jing＇an Oilfield is a waterflooding-in- advance reservoir. After nearly 10 years of development, the reservoir shows characteristics of rapid increase of water-cut in multiple directions and lower production rate than those of the same type reservors at a low degree of recovery percent of reserves. It is difficult to improve development results with the conventional injection adjustment. It needs to be adjusted by infill drilling. In this paper, with numerical simulation techniques, various infill-drilling adjustment patterns under skewed inverted nine-spot （injection） patterns of the infill-drilling adjustment test district in the Baiyushan area are predicted and optimized to determine three infill-drilling methods of EOR, and achieved good results in the field trials.
关键词
菱形反九点井网
加密调整
数值模拟
采收率
skewed inverted nine-spot pattern： infill-drilling adiustment
numerical simulation
recovery factor
