摘要
碳酸盐岩缝洞型底水油藏的储集空间主要由缝、洞组成。在开采过程中,底水锥进机理与常规底水油藏有所区别,有必要对其进行研究。根据塔河油田缝洞型底水油藏缝、洞分布不均匀及非均质性较强的特点,将储层抽象成为渗透率突变的地质模型,定义渗透率突变系数和区域半径比,并基于达西定律,利用常规底水油藏Dupuit临界产量公式推导出了缝洞型底水油藏油井的临界产量计算方法,继而分析了渗透率突变系数和区域半径比在油井钻遇不同部位情况下对油井临界产量的影响。
The main accumulation spaces of carbonate fractured-vuggy reservoir with bottom water include structural fractures and vugs. In the course of development, the coning mechanism of bottom water is different from conventional reservoir with bottom water, so it is necessary to study it. On the basis of thinking about the intensive heterogeneity of fractured-vuggy reservoir with bottom water of Tahe Oilfield, authors take the reservoir as a geological model of mutation permeability, define the coefficient of mutation permeability and ratio of regionality, and make use of Dupuit formula to deduce calculation method of critical production rate for fractured-vuggy reservoir with bottom water. At last, authors analyze the influences on critical production rate by the coefficient and the ratio at different situations of oil well drilling to various places.
出处
《岩性油气藏》
CSCD
2009年第4期108-110,119,共4页
Lithologic Reservoirs
基金
国家重点基础研究发展计划"973"项目"碳酸盐岩缝洞型油藏开发基础研究"(编号2006CB202400)资助
关键词
缝洞型油藏
底水油藏
临界产量
突变渗透率
区域半径比
塔河油田
fractured-vuggy
bottom water
critical production rate
coefficient of mutation permeability
ratio of regionalityradius
Tahe Oilfield
