摘要
裂缝性水窜水淹是裂缝性特低渗油藏高效注水开发中存在的主要问题,通过识别该类油藏的窜流通道可以预判及制定相关的对策技术。为此,通过对油藏的静态地质特征和动态开发特征的分析,10项静态地质指标和7项开发动态指标被选作评判因素,以九标度法为算法,建立了识别和评判裂缝性特低渗油藏窜流通道的模型。以延长川口油田的两个井组为例,利用所建立的模型评判了两个井组中的窜流通道,计算结果与实际测试结果相吻合,说明所建立的评判模型符合油田开发的实际过程,识别的结果能为油田稳油控水措施的制定提供重要的依据。
The contradiction of water injection difficulty and water channeling restricts the efficient development of fractured ultra-low permeability reservoir in the process of water flooding. Therefore,to identify water channeling of this kind of reservoir is very important to anticipate or formulate corresponding measures. By means of analyzing static geological characteristics of reservoir and development dynamic of water flooding,10 static geological indexes and 7 development dynamic indexes are screened as evaluation factors. And the evaluation model of water channeling of fractured ultra-low permeability reservoir is established by using fuzzy integrated judging method with nine scaling. Then,taking two well groups in Yangchang oilfield as an example,the water channeling of two well groups is judged by the model and the calculation results is consistent with the actual test results. It shows that the model is in accord with the actual oilfield development process. So the results of the identification can provide a right direction for setting the measures of EOR.
出处
《钻采工艺》
CAS
北大核心
2015年第6期29-32,8,共4页
Drilling & Production Technology
基金
国家科技重大专项大型油气田及煤层气开发"低渗透油藏大功率谐振波-化学驱复合技术研究"(项目编号20011ZX05009-004)
国家自然科学基金"低渗油藏低频振动辅助表面活性剂复合驱油机理研究"(项目编号:51274229)
关键词
裂缝性特低渗油藏
窜流通道
九标度法
开发地质
注水
fractured ultra-low permeability reservoir,water channeling,fuzzy integrated judging methods with nine scaling,oilfield development geology,water flooding
