地质通报2011，Vol.30Issue(6)：904-910,7.
内蒙古西部额济纳旗及邻区二叠系埋汗哈达组烃源岩生物标志化合物的特征及意义
Biomarker characteristics of Permian Maihanhada Formation hydrocarbon source rocks in Ejin Banner and its vicinities, western Inner Mongolia, and their significance
摘要
Abstract
The accuracy of the surface outcrop hydrocarbon source rock evaluation result by using the traditional method is doubtful in the lower exploration degree area.Based on a study of such biomarkers as n-alkanes, isoprenoid alkenes, terpane and sterane, the authors evaluated the sedimentary environment, source rock kerogen type and maturity of Permian Maihanhada Formation in Ejin Banner and its vicinities.Pr/Ph ratios of most source rocks are lower than 1, and the phytane advantage is distinct, which shows that sedimentation of Permian Maihanhada Formation occurred in a reducing-highly reducing environment, which was beneficial for organic concentration, and the provenance was terrigenous higher plants and aquatic organisms, with the obvious input advantage of aquatic organisms.The relatioship between Pr/nC17-Ph/nC18 and C27-C28-C29 sterane shows that the kerogen of Maihanhada Formation source rocks was mainly of the Ⅱ 2 type.The parameters of OEP, terpane and C29 sterane show that the source rock of Permian Maihanhada Formation was mature-highly mature in Ejin Banner and its vicinities, which was beneficial for hydrocarbon generation.关键词
额济纳旗及其邻区/二叠系埋汗哈达组/烃源岩/生物标志化合物Key words
Ejin Banner and its vicinities/ Permian Maihanhada Formation/ hydrocarbon source rock/ biomarker分类
天文与地球科学引用本文复制引用
魏建设,卢进才,陈高潮,李金超..内蒙古西部额济纳旗及邻区二叠系埋汗哈达组烃源岩生物标志化合物的特征及意义[J].地质通报,2011,30(6):904-910,7.基金项目
中国地质调查局国土资源大调查项目《西北地区中小盆地群油气资源远景调查》(编号:1212010733506) （编号:1212010733506）
