页岩气储量计算关键参数测井评价方法研究
黄盼
（中国石化华东油气分公司勘探开发研究院，江苏 南京 210000）
摘要： 页岩气主要以吸附态和游离态赋存于暗色泥页岩中，需要分别计算吸附气和游离气的地质储量，评价难度较
大。针对页岩气储量计算的2 个关键参数（吸附气含量和游离气饱和度） 展开了详细讨论，明确了含水饱和度对页岩吸
附能力的影响规律并建立了考虑平衡水校正的吸附气计算方法；同时总结了多种适用于页岩气藏的非电阻率饱和度评价
方法，包括岩芯刻度法（TOC 法、黏土法）、含气孔隙度下限法和四孔隙模型法，并对页岩游离气饱和度进行吸附相孔
隙度校正，使得游离气饱和度计算结果符合地质规律，对页岩气藏储量的准确计算具有重要意义。
关键词： 页岩气；储量计算；吸附气含量；游离气饱和度
中图分类号： TE155     文献标识码： A     文章编号： 2095-0802-(2021)05-0002-05
Study on Log Evaluation Method of Key Parameters for Shale Gas Reserve Calculation
HUANG Pan
(Exploration and Production Research Institute, Sinopec East China Oil & Gas Company, Nanjing 210000, Jiangsu, China)
Abstract: Shale gas is mainly stored in the dark mud/shale in adsorbed phase and free gas phase. The geological reserves of
adsorbed gas and free gas are calculated in different methods separately, which make it difficult to evaluate. This paper discussed
in detail the two key parameters (adsorbed gas content and free gas saturation) for calculating shale gas reserves, clarified the influence
of water saturation on shale adsorption capacity, and established an adsorption gas calculation method considering equilibrium
water correction; at the same time, a variety of non-resistivity saturation evaluation methods suitable for shale gas reservoirs
were summarized, including core calibration method (TOC method, clay method), gas-bearing porosity lower limit method and
four-pore model method. Free gas saturation was corrected for adsorption phase porosity, so that the calculation result of free gas
saturation conforms to geological laws, which was of great significance for the accurate calculation of shale gas reservoir reserves.

Key words: shale gas; reserve calculation; adsorbed gas content; free gas saturation