天然气与石油2017，Vol.35Issue(3)：62-67,6.DOI:10.3969/j.issn.1006-5539.2017.03.011
致密砂岩储集层物性下限确定方法浅析
Research on the Determination Method of the Porosity and Permeability Cutoffs for Tight Sandstone Reservoir
摘要
Abstract
With the advancement of tight oil resource exploration and development, the research of the porosity and permeability cutoffs for tight sandstone reservoir becomes important, which can be used to predict favorable areas for exploration. Based on the study of other's work, the determination method for the porosity and permeability cutoffs can be divided into three categories, (1)Positive method, to calculate the porosity and permeability cutoffs through various experiments on cores, including capillary pressure analysis, the simulation of filling, the irreducible water saturation, minimum flow pore throat radius and the adsorption of water film thickness;(2) Reverse method, to calculate porosity and permeability cutoffs according to actual production data, including oil testing data statistics,φ - K crossplot, oil bearing condition of the tight sandstone, the distribution function curve method;(3) Comprehensive study method, to calculate the porosity and permeability cutoffs with combined methods. Through the comparison of the three methods, it is found that the results of positive study are less than that of reverse method, however,the process is complicated relatively. And the reverse method is limited by current economic and technical conditions and the results are larger than the positive method with greater significance to guide production. Thus, integrated application shall be conducted to identify the porosity and permeability cutoffs.关键词
致密砂岩/物性下限/实验/统计Key words
Tight sandstone/Porosity and permeability cutoff/Experiment/Statistics引用本文复制引用
巨世昌,刘博峰,李闻东,王媛媛..致密砂岩储集层物性下限确定方法浅析[J].天然气与石油,2017,35(3):62-67,6.基金项目
国家自然科学基金项目"鄂尔多斯盆地上古生界致密砂岩气藏天然气运移机制"(41502132) （41502132）
