大庆石油地质与开发2017，Vol.36Issue(4)：168-174,7.DOI:10.19597/J.ISSN.1000-3754.201703042
柴北缘鱼卡地区中侏罗统油页岩类型及成矿差异
TYPES AND MINERALIZING DIFFERENCES FOR MIDDLE JURASSIC OIL SHALE IN YUQIA REGION OF NORTH MARGIN IN QAIDAM BASIN
摘要
Abstract
Multilayered oil shales are developed in Shimengou Formationof Middle Jurassic Epoch in Yuqia area of Qaidam Basin,with the help of the core observation and geochemical analyses of the whole cores of Well YYY-1,two types of the oil shale were identified in the shale and coal bearing intervals.The upper-interval oil shale was developed in the deep lake-semi deep lake environments,the oil-bearing rate is medium,the single layer and accumulative thicknesses are pretty larger,the organic carbon content w (TOC) is between 5.97％ to 15.35 ％,and hydrocarbon generating potential (S1 +S2) is between 29.71 to 118.62 mg/g,the types of the organic matter are mainly Type Ⅰ and Type Ⅱ 1,the main source of the organic matter is the lacustrine algae organism;the lower coalbearing oil shale was developed in the lacustrine environment with pretty higher oil-bearing rate,but the single and cumulative thicknesses were rather smaller,and moreover was interbeddedly buried with the coal and carbonaceous mudstone,w (TOC) is 13.80％-48.80％ and S1+S2 is 39.31-162.12 mg/g,the types of the organic matter are mainly Type Ⅱ 2,the source of the organic matter is mainly terrigenous higher plants.The sedimentary environments and sources of the organic matter are the key factors influencing the mineralizing differences between the two types of the oil shale.关键词
柴北缘/鱼卡地区/中侏罗统/油页岩类型/有机质特征/成矿差异Key words
North Margin of Qaidam Basin/Middle Jurassic/Yuqia region/oil shale type/organic matter characteristic/mineralizing difference分类
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王君贤,刘招君,孙平昌,白悦悦,邓硕..柴北缘鱼卡地区中侏罗统油页岩类型及成矿差异[J].大庆石油地质与开发,2017,36(4):168-174,7.基金项目
中国地质调查局油气资源调查中心战略选区项目(1211302108025-3-1) （1211302108025-3-1）
中国地质调查局油气资源调查中心地质调查项目(DD20160188-01). （DD20160188-01）
