天然气勘探与开发2026，Vol.49Issue(1)：15-27,13.DOI:10.12055/gaskk.issn.1673-3177.2026.01.002
致密砂岩气藏剩余储量定量表征与差异化挖潜对策
Quantitative characterization and differentiated potential tapping strategies of remaining reserves in tight sandstone gas reservoirs:A case study of Block Su 36-11 in Sulige Gasfield,Ordos Basin
摘要
Abstract
The successful development of the Sulige Gasfield has made a tremendous contribution to the continuously increasing tight gas production in the Ordos Basin.Currently,the central area of the gasfield has entered the middle-late stage of development,with both recovery factor and producing reserves reaching high levels.It is necessary to quantitatively characterize the spatial distribution of remaining reserves in tight sandstone reservoirs at this stage,and customize differentiated potential tapping strategies.In this paper,taking Block Su 36-11 in the central Sulige Gasfield as an example,the distribution of tight sandstone reservoirs was finely described.On this basis,a research method integrating three-dimensional geological modeling with CMOST intelligent history matching numerical simulation was adopted to calculate the development scale and distribution frequency of effective sand bodies,and describe the remaining tight gas reserves in a stepwise manner.The following results are obtained.(i)During the sedimentary period of Block Su 36-11,the hydrodynamic forces were strong.Sand bodies were extensively and continuously developed under the control of superimposed zones of braided rivers.(ii)The development frequencies of effective sand bodies in the eighth member of the Permian Lower Shihezi Formation(He 8 Member)and the first member of the Permian Shanxi Formation(Shan 1 Member)are relatively high,with the frequencies of 14%,56%,and 30%for the upper and lower submembers of He 8 Member,and Shan 1 Member,respectively.(iii)The adopted CMOST module of CMG software enables automatic history matching and parameter optimization for gas wells.The quantitative evaluation results from numerical simulation indicate that the remaining gas is concentrated in the lower submember of He 8 Member and the second sublayer of Shan 1 Member,and it primarily occurs as interlayer remained gas and inter-well remained gas,and incomplete fracturing remained gas locally.(iv)For twenty-one well areas under four categories divided by reserve producing degree in the block,production strategies are researched separately depending on types of well areas.It is concluded that differentiated potential tapping strategies,such as local well pattern infilling,reperforation,old well sidetracking,and overall deployment,should be implemented according to the specific types of well areas to enhance the gas recovery of the block and thus contribute to the sustaining stable production in the Sulige Gasfield.关键词
鄂尔多斯盆地/苏里格气田/致密砂岩气/剩余气表征/有效砂体/地质建模/数值模拟/挖潜对策Key words
Ordos Basin/Sulige Gasfield/Tight sandstone gas/Remaining gas characterization/Effective sand body/Geological modeling/Numerical simulation/Potential tapping strategy分类
能源科技引用本文复制引用
贾爱林,朱汉卿,李刚,韩江晨,黄苏琦..致密砂岩气藏剩余储量定量表征与差异化挖潜对策[J].天然气勘探与开发,2026,49(1):15-27,13.基金项目
中国石油天然气股份有限公司科学研究与技术开发项目"老气田'压舱石工程'关键技术研究与示范"(编号:2023YQX103)和"气藏采收率标定方法与复杂气藏提高采收率新技术研究"(编号:2024DJ86). （编号:2023YQX103）
