山东国土资源2024，Vol.40Issue(10)：10-17,8.DOI:10.12128/j.issn.1672-6979.2024.10.002
莱阳凹陷水南组页岩气储层微观特征研究
Study on Microscopic Characteristics of Shale Gas Reservoirs in Shuinan Formation in Laiyang Depression
摘要
Abstract
In this paper,microscopic characteristics of shale gas reservoirs in Shuinan formation of Laiyang depression has been studied.By using comprehensive analysis and experimental methods of profile and drilling core samples,it is found that shale has low porosity.Multiple types of reservoir spaces are devel-oped,including mainly consisting of residual primary pores or micro cracks formed by organic matter hy-drocarbon generation,pores formed by clay mineral transformation,and pores formed by dissolution of feldspar and calcite.The existence of these micropores and cracks provides space for the occurrence of shale gas.The comprehensive testing of mercury intrusion,low-temperature liquid nitrogen,and CO2 adsorp-tion show differences between the profile sample and the drilling sample.The average pore size of the shale in Shuinan formation is mainly 5～13nm,and the average size is 8.23nm.The average total pore specific surface area of the shale is 5.72 m2/g,and the average total pore volume is 0.008 cm3/g.This has impor-tant guiding significance for the development and production of shale gas reservoirs.It will provide scientif-ic basis for the effective development of Shuinan formation shale gas field in Laiyang depression.关键词
水南组/页岩气/孔隙特征/微观特征/莱阳凹陷Key words
Shuinan formation/shale gas/pore characteristics/microscopic characteristics/Laiyang de-pression分类
天文与地球科学引用本文复制引用
刘新升,张领军,谢波,龚铭泽,宋忠杰..莱阳凹陷水南组页岩气储层微观特征研究[J].山东国土资源,2024,40(10):10-17,8.基金项目
山东省国土资源厅,页岩气调查评价项目(鲁国土资字[2013]1179号),任务书编号:鲁勘字[2013]7号 （鲁国土资字[2013]1179号）
