松辽盆地东南隆起区-中央坳陷区上白垩统青山口组一段油页岩特征对比分析Upper Cretaceous Qingshankou Formation First Member Oil Shale Features Comparative Analysis in Southeast Uplift-Central Depression, Songliao Basin
张帅华,刘招君,申林,张朋霖,孟庆涛
摘要(Abstract):
在岩心观察和测试数据分析基础上,对松辽盆地东南隆起区和中央坳陷区青山口组一段油页岩的岩石学特征、工业品质特征、有机地球化学特征和生物标志化合物特征进行对比分析。结果表明:研究区油页岩为高灰分、低硫、中等—低品质油页岩;油页岩有机质类型主要为Ⅰ型干酪根,有机质来源主要为藻类体,其中东南隆起区油页岩中陆源有机质含量和有机质丰度相对较高,有机质成熟度相对较低;东南隆起区油页岩埋深相对较浅,油页岩单层厚度和累积厚度相对较大;东南隆起区和中央坳陷区油页岩的碳优势指数(CPI)平均值分别为1.25和1.13,表明中央坳陷区油页岩的奇碳数优势相对较小,成熟度相对较高;甾类/藿类比值分别为0.94和0.22,C_(27)/C_(29)比值分别为1.00和0.97,表明东南隆起区油页岩中的湖生藻类体的优势相对较高;Pr/n-C_(17)与Ph/n-C_(18)交会图表明中央坳陷区油页岩沉积水体的还原性比东南隆起区更强;C_(31)αβ 22S/(22S+22R)藿烷的平均值分别为0.46和0.53,表明东南隆起区油页岩成熟度相对较低;伽马蜡烷指数平均值分别为0.40和0.27,表明东南隆起区油页岩水体盐度相对更高。前人对深层油页岩的研究较少,本次通过对研究区浅层和深层油页岩的特征对比分析,揭示研究区油页岩特征和沉积环境的差异并探讨造成这种差异的成因,对研究区油页岩的勘探与开发具有一定的指导意义。
关键词(KeyWords): 青山口组一段;油页岩特征;形成环境;松辽盆地
基金项目(Foundation): 中国地质调查局油气资源中心项目“全国油页岩地质调查与评价”
作者(Author): 张帅华,刘招君,申林,张朋霖,孟庆涛
参考文献(References):
- [1]Feng Zhiqiang,Jia Chengzao,Xie Xinong,et al.Tectonostratigraphic units and stratigraphic sequences of the nonmarine Songliao basin,northeast China[J].Basin Research,2010,22(1).
- [2]孙平昌.松辽盆地东南部上白垩统含油页岩系有机质富集环境动力学[D].长春:吉林大学,2013.
- [3]贾建亮.基于地球化学—地球物理的松辽盆地上白垩统油页岩识别与资源评价[D].长春:吉林大学,2012.
- [4]王艺萌,刘招君,孙平昌.松辽盆地NGN1井上白垩统青一段有机质演化[J].世界地质,2015,34(3):735-742.
- [5]刘招君,孟庆涛,柳蓉.中国陆相油页岩特征及成因类型[J].古地理学报,2009,11(1):105-114.
- [6]王平康.松辽盆地晚白垩世青一段黄铁矿形态及古湖泊演化[D].北京:中国地质大学(北京),2009.
- [7]张爱云.海相黑色页岩建造地球化学与成矿意义[M].北京:科学出版社,1987.
- [8]Wenyi Zhu,John R.Reinfelder.The Microbial Community of a Black Shale Pyrite Biofilm and its Implications for Pyrite Weathering[J].Geomicrobiology Journal,2012,29(2).
- [9]邬立言,顾信章.热解技术在我国生油岩研究中的应用[J].石油学报,1986(2):13-19.
- [10]申林.松辽盆地南部上白垩统青山口组深层油页岩特征及预测[D].长春:吉林大学,2020.
- [11]Simoneit Bernd R T,Didyk Borys M.Organic geochemistry of a Chilean paraffin dirt[J].Chemical Geology,1978,23(1-4).
- [12]陈兰,钟宏,胡瑞忠,肖加飞,邹艳荣.黔北早寒武世缺氧事件:生物标志化合物及有机碳同位素特征[J].岩石学报,2006(9):2413-2423.
- [13]Brassell W R,Dunst C J.Fostering the object construct:large-scale intervention with handicapped infants.[J].American journal of mental deficiency,1978,82(5).
- [14]Jasper K,Hartkopf-Fr?der C,Flajs G,et al.Evolution of Pennsylvanian (Late Carboniferous) peat swamps of the Ruhr Basin,Germany:Comparison of palynological,coal petrographical and organic geochemical data[J].International Journal of Coal Geology,2010,83(4):346-365.
- [15]Zdravkov A,Bechtel A,Sachsenhofer R F,et al.Vegetation differences and diagenetic changes between two Bulgarian lignite deposits-Insights from coal petrology and biomarker composition[J].Organic Geochemistry,2012,42(3):237-254.
- [16]Tissot B P,Welte D H.Petroleum formation and occurrence[M].Springer-Verlag Berlin Heidelberg GmbH,1984.
- [17]Alias F L,Abdullah W H,Hakimi M H,et al.Organic geochemical characteristics and depositional environment of the Tertiary Tanjong Formation coals in the Pinangah area,onshore Sabah,Malaysia[J].International Journal of Coal Geology,2012(104):9-21.
- [18]Volkman J K.A review of sterol markers for marine and terrigenous organic matter[J].Organic Geochemistry,1986,9(2):83-99.
- [19]Bechtel A,Widera M,Sachsenhofer R F,et al.Biomarker and stable carbon isotope systematics of fossil wood from the second Lusatian lignite seam of the Lubstów deposit (Poland)[J].Organic Geochemistry,2007,38(11):1850-1864.
- [20]Safonova I Y,Utsunomiya A,Kojima S,et al.Pacific superplume-related oceanic basalts hosted by accretionary complexes of Central Asia,Russian Far East and Japan[J].Gondwana Research,2009,16(3-4):587-608.
- [21]张立平,黄第藩,廖志勤.伽马蜡烷—水体分层的地球化学标志[J].沉积学报,1999(1):3-5.