摘要
PI决策技术方法简单方便,输入数据少,在注水开发油田区块整体化学调剖过程中得到了广泛应用,成为目前化学调剖研究与应用过程中必不可少的决策与设计手段。由于吐哈油田为低渗透油藏,地层注水启动压力大,另外在测试压降曲线时,PI值受管柱、注水方式、水嘴等的影响,加上其模型本身没有考虑剖面因素,使其准确性和推广应用受到限制,分析了该技术在吐哈低渗透油田应用效果及其适应性,在此基础上提出了改进与完善的措施,形成了一套适合吐哈油田的PI决策选井技术界限。
PI decision-making makes it easy and convenient to select wells and layers. It only requires a few input data, and has been widely used during the macrocosmic block profile control by chemical method in waterflooding oilfields, and it has become an absolutely necessary method for decision-making and design during the research and application of the profile control by chemical method. Because Tuha oilfield is low in permeability, and the starting water injection pressure is high, in addition, the value of PI is impacted by tubing string, water injection mode and water nozzle, and the model itself do not take the profile factor into account, its accuracy and application is restricted. Its application effectiveness and adaptability in low permeable reservoirs were analyzed. A ameliorated method and a set of thresholds for PI decision-making technique in Tuha oilfield are perpesed.
出处
《吐哈油气》
2004年第2期160-162,共3页
Tuha Oil & Gas
