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| 柴达木盆地北缘侏罗系不同沉积环境烃源岩生物标志物特征及其应用 | |
| 引用本文： | 曹剑,边立曾,胡凯,刘云田,汪立群,杨少勇,陈琰.柴达木盆地北缘侏罗系不同沉积环境烃源岩生物标志物特征及其应用[J].地质学报,2008,82(8):1121-1128. |
| 作者姓名： | 曹剑 边立曾 胡凯 刘云田 汪立群 杨少勇 陈琰 |
| 作者单位： | 1. 南京大学地球科学系,南京,210093 2. 南京大学地球科学系,南京,210093;中国石油青海油田公司,甘肃敦煌,736202 3. 中国石油青海油田公司,甘肃敦煌,736202 |
| 基金项目： | 本文为国家自然科学基金项目(编号40602014，40638042)资助的成果。 |
| 摘 要： | 柴达木盆地北缘地区侏罗系(中下侏罗统)的优质烃源岩主要发育于湖相与三角洲相环境。研究了不同时代、不同沉积环境中烃源岩的生物标志物组成特征，结果发现，有3类化合物的分布与组成差异显著，包括三环萜烷(C19、C20、C21)的分布型式、重排藿烷的丰度以及规则甾烷的相对组成。其中，不同时代的差异主要体现在规则甾烷组成上；而不同沉积环境的差异主要体现为三环萜烷(C19、C20、C21)的分布型式及重排藿烷的丰度。分析认为，这些差异与烃源岩的沉积环境及其生源组成有密切关系。据此，初步将这些参数应用于两方面研究，一是为划分地层沉积环境提供“生物标志物相标志”，二是研究油源对比，取得良好效果。因此，本文研究结果具有重要实用价值与参考意义。 |
| 关 键 词： | 生物标志物 油源对比 侏罗系泥质烃源岩 沉积环境 柴达木盆地北缘地区 |
| 收稿时间： | 1/6/2008 12:00:00 AM |
| 修稿时间： | 2008/5/27 0:00:00 |
Biomarker Features of Jurassic Mudstone Source Rock from Different Sedimentary Environments in the Northern Qaidam Basin and Its Applications |
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| CAO Jian,BIAN Lizeng,HU Kai,LIU Yuntian,WANG Liqun,YANG Shaoyong,CHEN Yan.Biomarker Features of Jurassic Mudstone Source Rock from Different Sedimentary Environments in the Northern Qaidam Basin and Its Applications[J].Acta Geologica Sinica,2008,82(8):1121-1128. | |
| Authors: | CAO Jian BIAN Lizeng HU Kai LIU Yuntian WANG Liqun YANG Shaoyong CHEN Yan |
| Abstract: | The Jurassic organic-rich mudstone source rock in the northern Qaidam Basin occurred mainly in lacustrine and deltaic sedimentary environments. This paper focuses on the characters of biomarrker composition in these two different environments and thus seven typical samples were collected from the two settings for this purpose. The results indicate that the distribution and composition of the three kinds of compounds are very different,especially the distribution of tricyclic terpane,abundance of diahopanes,and a relative composition of regular sterrane. The composition of regular sterane suggests the different times,while distribution pattern of tricyclic terpane and abundance of diahopanes indicate the discrepancies of sedimentary environments. In deltaic source rocks,distribution of tricyclic terpane follows the order of C19>C20>C21,with a relatively high abundance of diahopanes. In contrast,in lacustrine source rocks,the distribution of tricyclic terpane shows C19 |
| Keywords: | biomarker oil-source correlation Jurassic mudstone source rock sedimentary environment northern Qaidam Basin |
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