西安石油大学学报（自然科学版）2024，Vol.39Issue(5)：43-49,7.DOI:10.3969/j.issn.1673-064X.2024.05.006
纳林河地区本溪组深部煤层气地质特征及开发潜力
Geological Features and Development Potential of Deep Coalbed Methane Resources in Benxi Formation of Nalinhe Area,Ordos Basin
摘要
Abstract
The development of coalbed methane in the eastern edge of the Ordos Basin is relatively mature,mainly in the middle and shallow layers.Coalbed methane resources in other areas of the basin have not yet been evaluated.Based on comprehensive data such as core,seismic,well logging,and analysis data,the basic geological characteristics of the 8# coal seam in the Nalinhe area of the central Ordos Basin were analyzed in detail,the enrichment conditions of coalbed methane were summarized,and its development potential was evaluated.The burial depth of 8# coal seam in the study area is 3 100～3 400 m,with a thickness of 3～10 m and a Ro of 1.6～2.2,belonging to a coal seam with high maturity to over maturity.The coal seam is mainly composed of bright coal and semi-bright coal,with an average gas content of 18.70 m3/t and free gas accounting for 29.93％.Coal cleat is well developed in the coal seam,with an aver-age porosity of 3.83％and an average permeability of 3.95 × 10-3 μm2.The high-quality coal seam quality,gentle and simple structur-al characteristics,closed top and bottom plates mainly composed of mudstone,as well as high water mineralization and trapped pressure environment,together create a self-generation and self-storage enrichment mode of the deep coalbed methane.Compared with Daning-Jixian block and Jiaxian block,the coalbed methane in Nalinhe area has certain development potential,and the good production situation of the well Nalinl H indicates a promising prospect for the deep coalbed methane development in Nalinhe area.关键词
鄂尔多斯盆地/深部煤层气/纳林河地区/富集条件/开发潜力Key words
Ordos Basin/deep coalbed methane/Nalinhe block/enrichment condition/development potential分类
天文与地球科学引用本文复制引用
乔博,刘海锋,贺刚,赵雅庆,沈雅斐..纳林河地区本溪组深部煤层气地质特征及开发潜力[J].西安石油大学学报（自然科学版）,2024,39(5):43-49,7.基金项目
中石油5000万吨专项"长庆油田5000万吨持续高效稳产关键技术研究与应用"课题九"长庆气田稳产及提高采收率技术研究"(2016E-0609) （2016E-0609）
