海陆过渡相煤系非常规天然气储层特征及共探共采浅析——以榆社-武乡区块为例

发布时间：2018-06-18 08:00

本文选题：海陆过渡相 + 煤层气　；参考：《西安石油大学学报(自然科学版)》2017年03期

【摘要】：为了更好地揭示海陆过渡相煤系非常规天然气储层特征,服务于非常规天然气共探共采,以榆社-武乡区块煤系地层为研究对象,开展了地层划分与对比及煤层气、页岩气储层特征研究,对煤系非常规天然气共探共采的可行性进行了探讨。结果表明:研究区主力煤层为山西组3号煤层和太原组15号煤层,煤体结构多为原生结构,孔隙度平均12.34%,3号煤层含气量16.48 m~3/t,15号煤层含气量16.90 m~3/t。泥页岩矿物成分以黏土和石英为主,脆性矿物平均质量分数40.48%,TOC质量分数平均2.04%,镜质体反射率R_02.0%。孔隙度平均3.80%,渗透率平均0.078×10~(-3)μm~2,含气量平均0.44 m~3/t。煤层气和页岩气在本区具有共探共采的可行性。
[Abstract]:In order to better reveal the characteristics of unconventional natural gas reservoir of transitional facies coal series and serve for co-exploration and co-production of unconventional natural gas, the stratigraphic division and correlation and coalbed methane are carried out in Yushi-Wuxiang block, taking the coal-measure strata in Yushes-Wuxiang block as the research object. The feasibility of co-exploration and co-production of unconventional natural gas in coal measures is discussed. The results show that the main coal seams in the study area are Shanxi No. 3 and Taiyuan No. 15, the coal body structure is mostly primary structure, the average porosity is 12.34, the gas content in No. 3 coal seam is 16.48 mm ~ 3 / t, and the gas content in No. 15 coal seam is 16.90 m ~ (3 / t). The mineral composition of shale is mainly clay and quartz, the mean mass fraction of brittle minerals is 40.48 and the average TOC content is 2.040.The vitrinite reflectance is R02.0. The average porosity is 3.80, the average permeability is 0.078 脳 10 ~ (-3) 渭 m ~ (-2), and the average gas content is 0.44 m ~ (-3 / t). Coalbed methane and shale gas have the feasibility of co-exploration and co-production in this area.
【作者单位】：中国矿业大学煤层气资源与成藏过程重点实验室;山西省煤炭地质勘查研究院;
【基金】：山西省煤基重点科技攻关项目(编号:MQ2014-02)
【分类号】：P618.13;TE311

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