煤田地质与勘探2016，Vol.44Issue(5)：155-159,5.DOI:10.3969/j.issn.1001-1986.2016.05.030
煤层非均质程度测井定量评价方法
Quantitative evaluation of reservoir heterogeneity of coal seam by using logging data
罗兵 1谢小国1
作者信息
- 1. 四川省煤田地质局物探公司，四川 成都610072
- 折叠
摘要
Abstract
Aiming at the big influence of heterogeneity on CBM extraction, through analyzing the permeability distribution law by using logging data, the planar and vertical heterogeneous degree of coal seam can be evaluated quantitatively. Darcy formula was used to determine the permeability of coal matrix, dual lateral logging data were used to estimate the permeability of fissures, the cumulative distribution curve corresponding to the contribution rate of seam permeability under the ordinal percentage coordinate was drawn, the slope of the cumulative distribu-tion curve after transformation of definition coordinate is the coefficient of heyerogeneous degree. The actual ap-plication shows the coefficient of heterogeneous degree can reflect the horizontal and vertical difference of the phsical properties of coal seam, and then the hetrogeneity of seam can be evaluated quantitatively.关键词
煤层/非均质性/测井/定量评价/非均质程度系数/渗透率贡献率Key words
coal seam/heterogeneity/logging/quantitative evaluation/coefficient of heterogeneous degree/contribution rate of permeability分类
天文与地球科学引用本文复制引用
罗兵,谢小国..煤层非均质程度测井定量评价方法[J].煤田地质与勘探,2016,44(5):155-159,5.
