摘要
经常遇到的油水相对渗透率曲线异常现象给油藏开发带来很大的困扰,特别是试验因素引起的相对渗透率异常现象,更是会给油藏开发分析和设计传递错误的信息。在分析大量油水相对渗透率试验数据和试验条件的基础上,总结了典型的异常油水相对渗透率曲线的形态,从岩样的前期处理、试验流程、试验方法、试验数据处理等几个方面细致分析了引起油水相对渗透率曲线异常的因素,并利用数值模拟计算等方法对异常曲线的产生机理进行了初步研究,认为计算方法的适应性、岩心的固有特性、试验过程等因素都会导致曲线的异常。根据研究结果有针对性地提出了减少异常曲线产生的建议。
Abnormal oil/water relative permeability curve brings difficulty for oil production.The one caused by experimental factors will result wrong information for reservoir development analysis and design.Based on a large number of experimental data and conditions of the oil/water relative permeability,the typical curve was summarized.The influencing factors of abnormal curve were analyzed from the aspects of earlier treatment of core samples,experimental process,experimental methods,experiment data treatment and so on.Numerical simulation and some other computational methods were applied to the initial research on mechanism of the abnormal curve.The availability of the methods,inherent features of the cores,experimental factors will cause the curve abnormal. Based on the research results,the suggestion of decreasing abnormal curves is proposed.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2009年第2期74-76,80,共4页
Petroleum Geology and Recovery Efficiency
关键词
相对渗透率
异常曲线
水化膨胀
损害程度
relative permeability
abnormal curve
hydrate expansion
damage degree
