柴北缘冷湖构造带与马北油田原油地球化学特征对比
通过对冷湖构造带和马北油田26个原油样品中生物标志物分布与组成特征的系统分析,发现马北油田原油中姥植比（低于2.0）相对偏低,伽马蜡烷指数（0.10-0.20）相对偏高,甾烷组成中明显富含指示藻类贡献的C27甾烷,且重排甾烷含量中等,它们与附近凹陷发育的中侏罗统湖相泥岩中的生物标志物分布与组成特征基本一致,显示它们之间存在成因联系;而冷湖构造带原油中姥植比（2.0-2.5）相对偏高,伽马蜡烷指数（低于0.05）相对偏低,明显富含指示陆源有机质贡献的C29甾烷,且重排甾烷含量相对丰富,这一系列特征均明显有别于马北油田原油,而与冷湖地区发育的下侏罗统湖相泥岩中的生物标志物分布与组成特征相吻合,表明...
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| Published in | 地球科学与环境学报 Vol. 39; no. 5; pp. 683 - 694 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
长江大学油气资源与勘探技术教育部重点实验室,湖北武汉430100
2017
长江大学资源与环境学院,湖北武汉430100 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1672-6561 |
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| Abstract | 通过对冷湖构造带和马北油田26个原油样品中生物标志物分布与组成特征的系统分析,发现马北油田原油中姥植比（低于2.0）相对偏低,伽马蜡烷指数（0.10-0.20）相对偏高,甾烷组成中明显富含指示藻类贡献的C27甾烷,且重排甾烷含量中等,它们与附近凹陷发育的中侏罗统湖相泥岩中的生物标志物分布与组成特征基本一致,显示它们之间存在成因联系;而冷湖构造带原油中姥植比（2.0-2.5）相对偏高,伽马蜡烷指数（低于0.05）相对偏低,明显富含指示陆源有机质贡献的C29甾烷,且重排甾烷含量相对丰富,这一系列特征均明显有别于马北油田原油,而与冷湖地区发育的下侏罗统湖相泥岩中的生物标志物分布与组成特征相吻合,表明该地区发育的下侏罗统湖相泥岩是其主力烃源岩。 |
|---|---|
| AbstractList | 通过对冷湖构造带和马北油田26个原油样品中生物标志物分布与组成特征的系统分析,发现马北油田原油中姥植比（低于2.0）相对偏低,伽马蜡烷指数（0.10-0.20）相对偏高,甾烷组成中明显富含指示藻类贡献的C27甾烷,且重排甾烷含量中等,它们与附近凹陷发育的中侏罗统湖相泥岩中的生物标志物分布与组成特征基本一致,显示它们之间存在成因联系;而冷湖构造带原油中姥植比（2.0-2.5）相对偏高,伽马蜡烷指数（低于0.05）相对偏低,明显富含指示陆源有机质贡献的C29甾烷,且重排甾烷含量相对丰富,这一系列特征均明显有别于马北油田原油,而与冷湖地区发育的下侏罗统湖相泥岩中的生物标志物分布与组成特征相吻合,表明该地区发育的下侏罗统湖相泥岩是其主力烃源岩。 P618.13%TE122; 通过对冷湖构造带和马北油田26个原油样品中生物标志物分布与组成特征的系统分析,发现马北油田原油中姥植比(低于2.0)相对偏低,伽马蜡烷指数(0.10～0.20)相对偏高,甾烷组成中明显富含指示藻类贡献的C27甾烷,且重排甾烷含量中等,它们与附近凹陷发育的中侏罗统湖相泥岩中的生物标志物分布与组成特征基本一致,显示它们之间存在成因联系;而冷湖构造带原油中姥植比(2.0～2.5)相对偏高,伽马蜡烷指数(低于0.05)相对偏低,明显富含指示陆源有机质贡献的C29甾烷,且重排甾烷含量相对丰富,这一系列特征均明显有别于马北油田原油,而与冷湖地区发育的下侏罗统湖相泥岩中的生物标志物分布与组成特征相吻合,表明该地区发育的下侏罗统湖相泥岩是其主力烃源岩. |
| Abstract_FL | The distributions and compositions of biomarkers of 26 samples of crude oils from Lenghu structure zone and Mabei oilfield in the northern Qaidam Basin were analyzed.The results show that the crude oil from Mabei oilfield is characterized by relatively lower Pr/Ph (＜2.0) and higher gammacerane index (0.10-0.20),and rich in C27 steranes relative to C29 steranes together with elevated diasteranes,suggesting that the oil should be derived from Middle Jurassic lacustrine mudstones in adjacent hydrocarbon-generating sag;however,for the crude oil from Lenghu structure zone,the Pr/Ph (2.0-2.5) is relatively higher,and gammacerane index (＜0.05) is lower,and C29 steranes surpass C27 homologues.These characteristics might reveal that they are generated by lower Jurassic lacustrine mudstones. |
| Author | 王志峰 包建平 |
| AuthorAffiliation | 长江大学油气资源与勘探技术教育部重点实验室,湖北武汉430100 长江大学资源与环境学院,湖北武汉430100 |
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| Author_FL | BAO Jian-ping WANG Zhi-feng |
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| DocumentTitleAlternate | Comparisons of Geochemical Characteristics of Crude Oils from Lenghu Structure Zone and Mabei Oilfield in the Northern Qaidam Basin |
| DocumentTitle_FL | Comparisons of Geochemical Characteristics of Crude Oils from Lenghu Structure Zone and Mabei Oilfield in the Northern Qaidam Basin |
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| Keywords | 柴达木盆地 gammacerane 生物标志物 侏罗系 sterane 萜烷 biomarker Qaidam Basin terpane Jurassic 姥植比 原油对比 甾烷 crude oil correlation 伽马蜡烷 Pr/Ph |
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| Notes | The distributions and compositions of biomarkers of 26 samples of crude oils from Lenghu structure zone and Mabei oilfield in the northern Qaidam Basin were analyzed.The results show that the crude oil from Mabei oilfield is characterized by relatively lower Pr/Ph（〈2.0）and higher gammacerane index（0.10-0.20）,and rich in C27 steranes relative to C29 steranes together with elevated diasteranes,suggesting that the oil should be derived from Middle Jurassic lacustrine mudstones in adjacent hydrocarbon-generating sag;however,for the crude oil from Lenghu structure zone,the Pr/Ph（2.0-2.5）is relatively higher,and gammacerane index（〈0.05）is lower,and C29 steranes surpass C27 homologues.These characteristics might reveal that they are generated by lower Jurassic lacustrine mudstones. 61-1423/P biomarker; Pr/Ph; terpane; sterane; gammacerane; crude oil correlations Jurassic; Qaidam Basin WANG Zhi-feng1,2 , BAO Jian-ping1,2 （1. Key Laboratory of Exploration Technologies for Oil and Gas Resources of Ministry of Education, Y |
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| PublicationTitle | 地球科学与环境学报 |
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| PublicationYear | 2017 |
| Publisher | 长江大学油气资源与勘探技术教育部重点实验室,湖北武汉430100 长江大学资源与环境学院,湖北武汉430100 |
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| Snippet | 通过对冷湖构造带和马北油田26个原油样品中生物标志物分布与组成特征的系统分析,发现马北油田原油中姥植比（低于2.0）相对偏低,伽马蜡烷指数（0.10-0.20）相对偏高,甾烷组... P618.13%TE122; 通过对冷湖构造带和马北油田26个原油样品中生物标志物分布与组成特征的系统分析,发现马北油田原油中姥植比(低于2.0)相对偏低,伽马蜡烷指数(0.10～0.20)相... |
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| SubjectTerms | 伽马蜡烷 侏罗系 原油对比 姥植比 柴达木盆地 生物标志物 甾烷 萜烷 |
| Title | 柴北缘冷湖构造带与马北油田原油地球化学特征对比 |
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