西北地质2024，Vol.57Issue(2)：34-45,12.DOI:10.12401/j.nwg.2023140
准噶尔盆地东部石钱滩凹陷石炭系石钱滩组烃源岩特征及其生烃潜力分析
Characteristics and Hydrocarbon Generation Potential for Source Rock of Carboniferous Shiqiantan Formation in Shiqiantan Depression,Eastern Junggar Basin
摘要
Abstract
The source rock of Shiqiantan formation is a main hydrocarbon-generation bed of the carboniferous for Shiqiantan depression in Junggar basin.Based on the detailed investigation on spatial distribution of forma-tion,the newly found Shuangjingzi geological trench section,Shiqian 1 well,Shiqian 2 well and Qian 1 well can be selected for systematic organic geochemistry analysis and testing of total organic carbon,pyrolysis,group composition,organic macerals,vitrinite reflectance,and chromatogram-mass spectrometry of saturated hydro-carbon for source rock samples,the results show that the source rock of the Shiqiantan formation is a set of typi-cal bay lagoon deposits,which is mainly distributed in the Shiqiantan depressionin with northwest-southeast di-rection.Besides,the local thickness is huge,even up to 370 m.The center of sediment thickness is located in the southeastern corner.The organic rich strata are mainly concentrated in the lower part of formation,and the up-per part comes second.The overall organic matter content is relatively high,and can reach the good grade or above,the main type of organic matter is II2-III,and has entered the high mature gas generation stage.It is con-cluded that the source rock of carboniferous Shiqiantan formation is characertized by good hydrocarbon genera-tion condition and can provide sufficient resources for Shiqiantan depression.关键词
准噶尔盆地/石钱滩组/烃源岩/生烃条件Key words
Junggar basin/Shiqiantan formation/source rock/hyrocarbon-generation condition分类
天文与地球科学引用本文复制引用
崔炳富,孔令华,陈军,张大勇,梁辉,李书凯,郭望..准噶尔盆地东部石钱滩凹陷石炭系石钱滩组烃源岩特征及其生烃潜力分析[J].西北地质,2024,57(2):34-45,12.基金项目
新疆油田项目"新疆油田探矿权区块评价研究"(20200101010600),吐哈油田项目"三塘湖-准东二叠系页岩油勘探开发理论与关键技术研究"(2021DJ1807),中国地质调查局项目"全国氦气资源潜力评价与战略选区调查(DD20221665)"联合资助. （20200101010600）
