摘要
以岩心分析资料为基础,结合测井曲线的响应特征,以回归分析法为辅助,优化建立了页岩矿物组分计算方法、地化参数评价方法以及计算含气量的公式,确定了适合本区域的页岩气测井评价方法和流程。通过回归方法计算孔隙度和泥质含量,利用自然伽马能谱资料计算特殊矿物——黄铁矿含量来修正测井响应方程组,然后通过求超定方程组最小二乘解的方法来计算矿物含量,置信度计算结果表明,该方法有效,应用可行。
According to core analysis data, log response characteristics and partially based on regression analysis method, this pa- per optimally establishes computational method of shale mineral components, evaluation method of geochemical parameters and computational formula of gas content, in addition, evaluation method and process of shale gas logging suited for this area are estab- lished. Through regression analysis method, porosity and shale content are calculated and by natural gamma ray spectrum; special mineral contents are calculated, among these minerals, pyrite content is used to revise log response equation group, and then through seeking the least square solution of overdetermined equation group, mineral contents are calculated. The calculations show that this method is effective and the application is feasible.
出处
《油气藏评价与开发》
CSCD
2016年第3期71-77,共7页
Petroleum Reservoir Evaluation and Development
关键词
页岩气
含气量
最小二乘法
shale gas, total organic carbon（TOC）, gas content, the least square method
