干旱区生态环境知识资源中心(Arid): 东营凹陷深层烃源岩生物标志物特征及其意义

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	东营凹陷深层烃源岩生物标志物特征及其意义
其他题名	acteristics of Biomarker and Its Implications of Deep Source Rocks from Northern Dongying Depression
	丁飞 1; 蔡进功 1; 隋风贵 2; 郑德顺 3; 徐兴友 2
来源期刊	沉积学报
ISSN	1000-0550
出版年	2011
卷号	29 期号:1 页码:192-198
中文摘要	主要利用GC--MS分析方法, 对东营凹陷北部膏岩层以及上下两段深层烃源岩可溶有机质中正构烷烃、甾烷类和藿烷类生物标志化合物进行了分析, 通过各种化合物的组成和分布特征对其地球化学意义进行了探讨. 结合各项参数结果表明:三段有机质来源都具有低等水生生物输入和陆源高等植物输入的双重特征, 膏岩层上段与下段有机质来源相似, 以陆源物质略占优势, 膏岩层段则以水生生物为主, 特别是嗜盐菌藻类;膏岩层烃源岩形成时期的高盐度水体及其导致缺氧的有机质沉积、埋藏环境对有机质保存起到了重要作用. 同时, 揭示了膏岩层作为烃源岩对东营凹陷北部地区油源的贡献显著
英文摘要	16 mudstone samples from wells of F8, Fs1 and Fs2 in Minfeng area of Dongying depression were selected for understanding the origin and the preservation of the organic matter and their significances.By the application of organic analysis including:total organic carbon content, extraction of soluble organic matter, group composition of soluble organic matter and GC-MS of saturated hydrocarbon, the abundance, type and the maturity of the organic matter were studied. The formation with the depth from 3 000 m to 5 000 m was divided into three units considering the existence of the gypsum-salt rock:the upper layer of the gypsum-salt rock, the gypsum layer and the lower layer of the gypsum-salt rock.There are great variations of the abundance of organic matter between each unit.The upper layer is much higher than others, so as to the content of chloroform bitumen"A".Both the TOC and the chloroform bitumen"A"of the gypsum layer are lower than the upper layer.The lower layer of the gypsum-salt rock is the lowest in chloroform bitumen"A", although one sample from F8 well has the TOC as high as 2.29%.The group composition of the soluble organic matter shows that:in three members of source rocks, the type of organic matter of gypsum layer is the best, and the upper layer of the gypsum-salt rock followed, at last is the lower layer of the gypsum-salt rock.Analysis of the gammacerane index and the ratio of Pr/Ph indicate that the upper layer of the gypsum-salt rock and the gypsum layer have similar sedimentary environment which is reducing deep lacustrine deposional environment under semi-humid climate conditions, and the salinity of the lake is normal in Dongying depression with fresh to brackish water.However, the depositional environment of gypsum layer is quite different for that is strong reducing saline lacustrine facies under semi-arid climate conditions with high salinity.The climate condition of the upper layer of the gypsum-salt rock is relatively more humid and huge amounts of terrestrial organic matter come into the lacustrine basin with surface runoff. As a result, the source of the sedimentary organic matter is lower hydrobiont, lacustrine algae and terrestrial organic matter transported by the river.As the climate conditions get more aridity, the input of terrestrial organic matter decease due to the river discharge reduced.Meanwhile, the salinity of the lake get stronger because of the degree of drought is pricked up gradually, but many species of halophilic bacteria and variety kinds of algae adapted to the hypersaline environment growth rapidly.Therefore, the organic matter of the gypsum layer is mainly originated from lower hydrobiont and algae, which is supported mainly from the dominance of the isoprenoid to the normal alkanes.Because of the existence of the gypsum-salt rock, the difference of maturity of organic matter is significant from routine variation, which performance as the maturity of the gypsum layer is lower than both the upper and the lower layers. The biomarker parameters of the crude oil from northern Dongying depression were collected to make sure the source of the oil had been exploited.According to the data, the crude oil can be separated into two species, one with high Pr/Ph ratio and low Pr/nC17 and Ph/nC18 ratios, the other with low Pr/Ph ratio while high Pr/nC_(17)and Ph/nC_(18) ratios, and the latter is distributed broadly in this area
中文关键词	生物标志化合物 ; 深层烃源 ; 岩膏岩层 ; 东营凹陷
英文关键词	biomarker deep source rock gypsum layer Dongying Depression
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOLOGY
WOS研究方向	Geology
CSCD记录号	CSCD:4127070
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/226236
作者单位	1.同济大学, 海洋地质国家重点实验室, 上海 200092, 中国; 2.中国石油化工股份有限责任公司胜利油田分公司地质科学研究院, 东营, 山东 257000, 中国; 3.河南理工大学资源与环境学院, 焦作, 河南 454000, 中国
推荐引用方式 GB/T 7714	丁飞,蔡进功,隋风贵,等. 东营凹陷深层烃源岩生物标志物特征及其意义[J],2011,29(1):192-198.
APA	丁飞,蔡进功,隋风贵,郑德顺,&徐兴友.(2011).东营凹陷深层烃源岩生物标志物特征及其意义.沉积学报,29(1),192-198.
MLA	丁飞,et al."东营凹陷深层烃源岩生物标志物特征及其意义".沉积学报 29.1(2011):192-198.