中国石油大学学报（自然科学版）2018，Vol.42Issue(4)：34-40,7.DOI:10.3969/j.issn.1673-5005.2018.04.004
基于孔径分布和T2谱的低孔渗储层渗透率确定方法
Permeability confirmation method of low porosity and p ermeability reservoirs based on pore distribution and T2spectrum
摘要
Abstract
To accurately calculate the permeability of low porosity and permeability reservoirs, we use a low porosity and per-meability reservoir in an oilfield in Bohai to study the influence of pore size distribution on permeability.The pore size distri-bution information of reservoir rocks can be characterized based on the mercury penetration pore size distribution and the nu-clear magnetic resonance (NMR) logging T2spectrum.The T2spectrum data of different pore size intervals can be obtained by using the pore size distribution histogram data to calibrate the NMR logging T2spectrum data.Permeability contribution values are used to determine the contribution factor of the pore size per unit porosity component to the permeability of each T2 spectral interval.A calculation method for permeability of low porosity reservoirs based on pore size distribution and T2spec-trum is then established.The results show that this method avoids the blindness of the previous calculation method of permea-bility based on the pore size distribution in the division of T2spectral range, and avoids the unreliability of the contribution value of different intervals empirically determined.The established permeability model based on pore size distribution and T2 spectrum provides a good guidance to evaluate permeability of low porosity reservoirs.关键词
核磁共振测井/低孔渗储层/T2谱/孔径分布/渗透率贡献因子Key words
nuclear magnetic resonance (NMR) logging/low porosity&permeability reservoir/T 2spectrum/pore size dis-tribution/permeability contribution factor分类
天文与地球科学引用本文复制引用
李志愿,崔云江,关叶钦,王淼..基于孔径分布和T2谱的低孔渗储层渗透率确定方法[J].中国石油大学学报（自然科学版）,2018,42(4):34-40,7.基金项目
中国海洋石油集团公司"十二五"科技重大项目(CNOOC-KJ125ZDXM07LTD-TJ-02) （CNOOC-KJ125ZDXM07LTD-TJ-02）
