青海东昆仑八宝山盆地高原含气泥页岩储层关键参数评价  

Evaluation of key parameters of gas-bearing shale reservoir on the plateau in Babaoshan Basin,East Kunlun,Qinghai

作　　者：佘刚 叶志红 张程恩 李兴文 袁莎莎 王少卿 SHE Gang;YE Zhihong;ZHANG Cheng′en;LI Xingwen;YUAN Shasha;WANG Shaoqing(Changqing Branch,China National Logging Corporation,Xi’an 710200,Shaanxi;Tuha Branch,China National Logging Corporation,Shanshan 838200,Xinjiang;Qinghai Branch,China National Logging Corporation,Dunhuang 736200,Gansu;North China Branch,China National Logging Corporation,Renqiu 062552,Hebei)

机构地区：[1]中国石油集团测井有限公司长庆分公司,陕西西安710200 [2]中国石油集团测井有限公司吐哈分公司,新疆鄯善838200 [3]中国石油集团测井有限公司青海分公司,甘肃敦煌736200 [4]中国石油集团测井有限公司华北分公司,河北任丘062552

出　　处：《长江大学学报（自然科学版）》2024年第1期38-48,共11页Journal of Yangtze University(Natural Science Edition)

基　　金：中国石油天然气集团公司重大科技专项“柴达木盆地复杂油气藏测井评价技术研究”(2016E-0108)。

摘　　要：青海东昆仑八宝山盆地三叠系八宝山组为一套高原陆相碎屑岩及火山岩沉积,目前对于高原陆相泥页岩缺少有效的测井评价方法。参考传统页岩气评价思路,挖掘研究区重点井常规及成像测井响应特征与岩心实验数据的关系,对储层关键参数进行评价:(1)基于常规测井曲线,利用相关性分析优选9个岩性敏感因子,通过最优化算法求取6种主要矿物含量;(2)利用基于常规曲线的多元线性回归、电阻率-声波时差重叠、体积模型、铀含量计算等多方法进行总有机碳含量(w(TOC))计算及方法优选;(3)基于矿物体积模型进行变骨架的基质孔隙度计算、利用微电成像进行裂缝拾取及裂缝参数评价、利用PoroTex图像处理技术刻画溶蚀孔缝发育程度、基于阵列声波波场分离技术进行斯通利波界面反射、幅度衰减计算及渗透率反演;(4)岩心实验刻度测井,优选关键地质参数,构建吸附气、游离气及总含气量计算模型;(5)基于阵列声波岩石力学静态转换参数及矿物体积模型,优选适宜研究区的岩石脆性及可压裂性评价方法。结果表明,基于测井的储层关键参数多方法优选结果取得了较高的精度,建立的研究区储层品质评价标准解决了八宝山盆地高原含气泥页岩储层评价的难题,取得了较好的应用效果。The Triassic Babaoshan Formation in Babaoshan Basin,East Kunlun,Qinghai Province is a set of plateau continental clastic rock and volcanic rock deposits,there is currently no effective logging evaluation program for plateau continental mud shale.With reference to traditional shale gas evaluation ideas,the relationship between conventional and imaging logging response characteristics of key wells in the excavation area and core experimental data is evaluated,and key parameters are evaluated:(1)Based on conventional logging curves,9 rocks are optimized using correlation analysis Sensitivity factor,calculate the volume of 6 main minerals through optimization algorithm;(2)Use multiple methods such as multiple linear regression based on conventional curve,resistivity-sonic time difference overlap,volume model,uranium content calculation and other methods for total organic carbon calculation(w(TOC))and method Optimization;(3)Based on the mineral volume model to calculate the matrix porosity of the variable skeleton,the use of micro-electric imaging for crack picking and fracture parameter evaluation,the use of PoroTex image processing technology to describe the development of dissolution pores and fractures,and the array acoustic wave field separation technology Stoneley wave interface reflection,amplitude attenuation calculation and permeability inversion;(4)Core experiment calibration logging,optimization of key geological parameters,construction of adsorption gas,free gas and total gas content calculation model;(5)Based on array acoustic wave rock Mechanical static conversion parameters and mineral volume models are optimized to evaluate rock brittleness and fracturing properties in suitable areas.The results show that the multi-method optimization results based on the key parameters of logging have achieved high accuracy,and the established regional reservoir quality evaluation standards have solved the difficult problem of gas-bearing mud shale reservoir evaluation and achieved good application results.

关 键 词：东昆仑 八宝山盆地 含气泥页岩 储层评价 

分 类 号：P631.84[天文地球—地质矿产勘探] TE132.14[天文地球—地质学]