地质通报2017，Vol.36Issue(4)：575-581,7.
辽西金羊盆地下侏罗统北票组页岩气地球化学特征及其成因
An analysis of the genesis and geochemical characteristics of shale gas in Lower Jurassic Beipiao Formation in Jinyang Basin
摘要
Abstract
The Jinlingsi-Yangshan Basin (Jinyang Basin) is one of the basins with the most completely Jurassic strata in northern China.The Lower Jurassic Beipiao Formation in the basin is composed of a set of lacustrine mudstones,and has beneficial potential of oil and gas.There are four wells in the west of the Zhangjiyingzi depression of Jinyang Basin,of which oil and gas shows were found in three wells.Field desorption of drill core from the SZK2 and SZK3 wells shows that the shale gas content collected from the shallower strata of mud shale of Beipiao Formation is considerable with the increasing depth,the total gas content and methane content increase.In addition,the total gas content and organic carbon content show a good positive correlation,which is a key factor affecting the gas content of the shale.A comparison with characteristics of adsorbed gas carbon isotope of the shale shows that the gas mainly came from biogenic gas and coal gas,and the shale gas has the characteristics of hybrid origin.The X diffraction analysis of mud shale from Beipiao Formation indicates that the favorable conditions of fracturing and strong gas adsorption capacity result in the good prospect of shale gas exploration.Beipiao Formation is favorable for shale gas exploration.关键词
成因分析/地球化学特征/页岩气/北票组/辽西金羊盆地Key words
genetic analysis/geochemical characteristics/shale gas/Beipiao Formation/Jinyang Basin分类
天文与地球科学引用本文复制引用
孙守亮,李永飞,郜晓勇,周铁锁,张涛,王森厚..辽西金羊盆地下侏罗统北票组页岩气地球化学特征及其成因[J].地质通报,2017,36(4):575-581,7.基金项目
中国地质调查局项目《松辽外围南部盆地群油气基础地质调查》(编号:DD20160167)和《辽宁金羊盆地油气基础地质调查》(编号:12120115001301) （编号:DD20160167）
