特种油气藏2025，Vol.32Issue(6)：78-85,8.DOI:10.3969/j.issn.1006-6535.2025.06.009
靖边气田盒8下致密砂岩储层泥质含量预测
Prediction of shale content in tight sandstone reservoirs of the Lower He 8 Member in Jingbian Gasfield
摘要
Abstract
To address challenges such as complex and variable sandstone types,unclear identification of lithology and effective reservoirs and low accuracy in porosity log interpretation in the tight sandstone reservoir of the Lower He 8 Member of the Upper Paleozoic Shihezi Formation in the Ordos Basin,a prediction model for shale content of these three types of sandstone was established through analysis of the logging response characteristics of quartz sand-stone,lithic quartz sandstone and lithic sandstone.The results indicate that the distribution ranges of natural gamma logging values for quartz sandstone,lithic quartz sandstone and lithic sandstone are large,with minimum values of 20.0,30.0 and 40.0 API respectively;The absolute error of the shale content prediction model is less than 5.0%,indicating reliable prediction accuracy of the model.This achievement can provide technical support for lithology i-dentification and effective reservoir prediction in the study area and also provide reference for calculating shale con-tent and porosity in other complex tight sandstone reservoirs.关键词
泥质含量/致密砂岩/低孔低渗储层/盒 8下/测井响应特征/靖边气田Key words
shale content/tight sandstone/low porosity and low permeability reservoir/Lower He 8 Member/log-ging response characteristics/Jingbian Gasfield分类
能源科技引用本文复制引用
罗广惠,代恒,余杰,张小莉,杨懿,李亚军,阎媛子,周志杰..靖边气田盒8下致密砂岩储层泥质含量预测[J].特种油气藏,2025,32(6):78-85,8.基金项目
陕西省自然科学基础研究计划"二氧化碳捕集、利用与封存研究"(2024JC-DXWT-06)、"二氧化碳咸水层封存选址优化研究"(2022JC-DW-09) （2024JC-DXWT-06）
陕西省自然科学基础研究计划一般项目(青年)"二氧化碳地质封存过程中超临界二氧化碳-水-岩石作用机理研究"(2023-JC-QN-0373) （青年）
