摘要
针对复杂岩性储层,选用多矿物模型分析的方法进行测井解释。综合分析研究区岩心资料,选择合适的岩石矿物组分和测井曲线,建立测井响应方程组。根据最优化原理,选用MATLAB最优化函数"lsqlin"对该方程组求解,得到各矿物组分的体积百分含量,根据计算的矿物含量采用综合骨架体积模型,计算储层孔隙度。实际测井资料应用表明,该方法能够有效地评价复杂岩性储层孔隙度,其中密度的综合骨架模型更适合研究区的评价,与常规测井解释方法对比,该方法效果显著,能够提供更多的关于地层矿物组分的信息。
For the complex lithology reservoir, the method of multi-minerals analysis is selected and used for logging interpretation. An analysis of core date which is collected in the research section is done first. Then the appropriate mineral and logging curves are chosen to build multi-minerals model e- quations. According to the principle of optimization, the MATLAB optimal function ＂lsqlin＂ is used to solve the linear equations. The result is the relative volume of every mineral composition, which could be used to compute the relative volume and logging response value of the rock matrix. And then the method of volume model is used to compute the reservoir porosity. The practical application shows that this method can calculate the porosity of complex lithology formation effectively, of which the volume model of density is more applicable to the research section. Compared to the conventional logging inter- pretation method, its effect is remarkable, and it can provide more information about mineral composi- tion of the formation.
出处
《贵州师范大学学报（自然科学版）》
CAS
2016年第5期77-82,共6页
Journal of Guizhou Normal University：Natural Sciences
基金
国家科技重大专项(2011ZX05030-004)
关键词
多矿物模型
复杂岩性
线性方程组
孔隙度
multi-minerals model
complex lithology
linear equations
porosity
