鄂尔多斯盆地靖边气田上古生界致密砂岩岩石类型测井识别  

Logging identification of Upper Paleozoic tight sandstone in Jingbian Gasfield, Ordos Basin

作　　者：黄文科[1] 马雄雄[1] 潘晓丽[1] 薛媛竹 贺刚 张小莉[2] 杨懿[3] HUANG Wenke;MA Xiongxiong;PAN Xiaoli;XUE Yuanzhu;HE Gang;ZHANG Xiaoli;Yang Yi

机构地区：[1]中国石油长庆油田公司 [2]西北大学地质学系/西北大学榆林碳中和学院/二氧化碳捕集与封存国家地方联合工程研究中心/陕西省碳中和技术重点实验室 [3]西安石油大学石油工程院

出　　处：《国外测井技术》2024年第1期32-39,M0002,共9页World Well Logging Technology

基　　金：陕西省自然科学基础研究计划项目(2022JC-DW-09)。

摘　　要：基于靖边气田上古生界盒_(8下)和山_(2)^(3)录井、岩心薄片分析、x衍射粘土分析、全岩分析、测井等资料综合分析,认为研究区上古生界含气层系致密砂岩储层的岩石类型主要有3种:石英砂岩、岩屑石英砂岩和岩屑砂岩。针对3种砂岩类型,分析对应的测井响应特征,优选出对砂岩岩石类型敏感的测井参数:光电吸附截面指数和自然伽马,进而采用交会图技术分别确定盒_(8下)和山_(2)^(3)的石英砂岩、岩屑石英砂岩及岩屑砂岩解释标准,系统开展砂岩岩石类型测井解释,与岩心分析测试资料对比,盒_(8下)和山_(2)^(3)测井解释符合率分别为89.2%和95.0%。最后,利用系统的测井砂岩岩石类型解释结果,厘清了不同类型砂岩的纵向和平面分布特征,为储层精细评价提供有效支撑。Base on the data of thin-section analysis,x-diffraction,whole rock analysis,logging of upper Paleozoic He 8xia and Shan 2-3 section,three rock types of tight sandstone reservoirs in the study area were identified,which are quarze sandstone,lithic quartz sandstone and lithic sandstone.On the basis of summarizing the log response characteristics of the three lithologies,photoelectric adsorption cross section and natural gamma curve were selected,and the interpretation standards of quartz sandstone,lithic quartz sandstone and lithic sandstone were determined by crossplot technology,and the reservoir lithologic logging interpretation was carried out.The coincidence rates were 89.20%and 95.00%,respectively.Using the results of lithology identification in a single well,lithology profiles and planar maps were drawn to discuss the vertical and planar distribution characteristics of different lithologies,establishing a solid foundation for the fine evaluation of the reservoir.

关 键 词：砂岩岩石类型 测井解释 光电吸收截面指数 盒_(8下)段 山_(2)^(3)段 鄂尔多斯盆地 

分 类 号：P61[天文地球—矿床学]