摘要
万吉业超凸型曲线和布雷吉曲线(双对数曲线)同属双对数型水驱特征曲线,其函数结构关系式相似,是水驱油田效果评价中的主要方法,但由于长期缺乏理论推理支持而被油藏工程界边缘化。为此,沿文献[1]的研究思路,在提出了2种平均含水饱和度(!Sw)与出口端含水饱和度(Swe)函数关系式的基础上,结合Welge方程和物质平衡方程,分别给出了万吉业超凸型曲线和布雷吉曲线的理论推导过程以及各自所对应的油水两相渗流特征表达式。通过这些研究,不仅加深了对这2种曲线实质性的认识,而且也为其推广应用提供了可靠的理论依据。
Both of Wan Jiye＇s extra-protruding curve and Bridge＇s curve belong to bilogarithmic water-drive characteristic curves with similar function, which are major methods for waterflood oilfield development evaluation. Because of lacking theoretical deducing, these curves have been ignored by reservoir engineers for a long time. Following the research thoughts of the literature [1], combining Welge＇s equation with material balance equation, this paper presents two types of average water saturation functions and exit-end water saturation function, and then gives the theoretic deducing process of above two curves and individual corresponding percolation expressions to oil and water. This study provides both in-depth recognition of above two curves and credible theoretic basis for their popularization.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2008年第3期338-340,共3页
Xinjiang Petroleum Geology
关键词
水驱特征曲线
对数
理论
方法
推导
water-drive characteristic curve
logarithm
theory
method
derivation
