海相油气地质2026，Vol.31Issue(4)：442-458,17.DOI:10.3969/j.issn.1672-9854.2026.04.009
鄂尔多斯盆地天然气成藏地质条件、资源潜力与勘探方向
Accumulation geological conditions,resource potential,and exploration directions of natural gas in the Ordos Basin
摘要
Abstract
Ordos Basin,one of the most important petroleum-bearing basins in China,is characterized by multiple natural gas-bearing systems,diverse reservoir types,and abundant resources.Since the beginning of the 14th Five-Year Plan period,besides continuously implementing large-scale proven reserves in mature tight sandstone and carbonate gas plays,significant breakthroughs have also been achieved in new fields and new reservoir types such as coal-measure gas,limestone gas,deep carbonate gas,and shale gas.These advances have rendered previous resource evaluation results insufficient to meet the latest exploration situation.This paper reviews the new understandings of natural gas exploration in the Ordos Basin since the 14th Five-Year Plan.The basin hosts coal-measure source rocks in Upper Paleozoic,marine argillaceous carbonate source rocks of the 1th to 3rd members of the Majiagou Formation,and marine shale source rocks of the Wulalike Formation in Lower Paleozoic.Multiple reservoir types are developed,including tight sandstone,carbonate weathering crust dolomite,limestone,coal,marine-continental transitional shale,deep dolomite,and marine shale.The cap rocks are composed of Upper Paleozoic argillaceous rocks,Lower Paleozoic evaporite rocks(gypsum-salt rocks),and argillaceous carbonate rocks.In response to the characteristics of multiple types of gas reservoirs,a resource evaluation method system has been established,primarily based on the volumetric method,flexibly supplemented by various auxiliary methods.The in-place natural gas resources in the basin have been re-evaluated to be 46.9×1012 m3,with 39.6×1012 m3 remaining as unproven resources by the end of 2025.The key future exploration targets are identified as coal-measure gas,tight sandstone gas,limestone gas,and dolomite weathering-crust gas in the eastern part of the basin.关键词
天然气/成藏条件/成藏模式/资源潜力/新领域/新类型/鄂尔多斯盆地Key words
natural gas/accumulation conditions/accumulation models/resource potential/new fields/new types/Ordos Basin分类
能源科技引用本文复制引用
胡新友,范立勇,李笑天,淡卫东,郭彬程,曹晶晶,刘晓鹏,殷亮亮..鄂尔多斯盆地天然气成藏地质条件、资源潜力与勘探方向[J].海相油气地质,2026,31(4):442-458,17.基金项目
本文受国家科技重大专项"鄂尔多斯盆地全油气系统与新领域勘探技术"(编号:2025ZD1400200)、自然资源部全国油气成藏远景区划专项"中石油油气成藏远景区划"(编号:QGYQCCQH2025-1)及中石油科技项目"中石油'十四五'油气资源评价"(编号:2023YQX201)联合资助 （编号:2025ZD1400200）
