Detection and research significance of thiadiamondoids from crude oil in Well Shunnan 1,Tarim Basin

doi:10.7623/syxb201801004

Acta Petrolei Sinica ›› 2018, Vol. 39 ›› Issue (1): 42-53.DOI: 10.7623/syxb201801004

• PETROLEUM EXPLORATION • Previous Articles Next Articles

Detection and research significance of thiadiamondoids from crude oil in Well Shunnan 1,Tarim Basin

Ma Anlai¹, Jin Zhijun¹, Zhu Cuishan²

1. Sinopec Petroleum Exploration & Production Research Institute, Beijing 100083, China;
2. College of Resources and Environment, Yangtze University, Hubei Wuhan 430100, China

Received:2017-08-31 Revised:2017-12-01 Online:2018-01-25 Published:2018-03-09

塔里木盆地顺南1井原油硫代金刚烷系列的检出及意义

马安来¹, 金之钧¹, 朱翠山²

1. 中国石油化工股份有限公司石油勘探开发研究院北京 100083;
2. 长江大学资源与环境学院湖北武汉 430100

通讯作者: 马安来,男,1969年12月生,1991年获淮南矿业学院地质系学士学位,2003年获中国石油勘探开发研究院博士学位,现为中国石油化工股份有限公司石油勘探开发研究院副教授,主要从事油气地球化学与成藏机理研究。Email:maal.syky@sinopec.com
作者简介:马安来,男,1969年12月生,1991年获淮南矿业学院地质系学士学位,2003年获中国石油勘探开发研究院博士学位,现为中国石油化工股份有限公司石油勘探开发研究院副教授,主要从事油气地球化学与成藏机理研究。Email:maal.syky@sinopec.com
基金资助:
国家自然科学基金项目（No.41772153）及中国石油化工股份有限公司科技部项目（P16090、P17049-1）资助。

Abstract

Abstract: Using silver nitrate-impregnated silica chromatographic column, the sulfur-bearing non-hydrocarbon fraction can be separated from Ordovician crude oil in Well Shunnan 1, Tarim Basin. Using GC-MS method, a complete series of lower thiadiamondoids compounds are found in the sulfur-bearing non-hydrocarbon fraction, including 38 compounds such as thiaadamantane, thiadiamantane and thiatriamantane. Meanwhile, higher thiatetramantanes and tetramantanethiols can be detected as well. Taking D₁₆-adamantane as the quantitative internal standard, the contents of lower thiadiamondoids, thiaadamantane, thiadiamantane and thiatriamantane in the crude oil of Well Shunnan 1 are 79.88 μg/g(oil), 21.27 μg/g(oil), 31.49 μg/g(oil)and 27.12 μg/g(oil)respectively. The detection of high-content thiatriamantane as well as higher thiatetramantanes and tetramantanethiols shows that the crude oil has experienced moderate thermochemical sulfate reduction (TSR)effect. The higher tetramantanes and pentamantanes can also be detected from the crude oil in Well Shunnan 1, and the 3-+4-methyldiamantane from crude oil is up to 707 μg/g(oil), which indicates the crude oil has experienced serious cracking. Crude oil cracking and TSR effect is the reason for crude oil possessing the heaviest marine whole-oil carbon isotope (-26.7 ‰). The regional high temperature-high pressure background combined with strike-slip fault development supports the geological conditions for the generation of thermal cracking and TSR effect.

Key words: thiadiamondoids, thiatetramantane, tetramantanethiol, diamondoid, higher diamondoids, thermochemical sulfate reduction (TSR), oil cracking, Tarim Basin

摘要： 使用银盐离子色层柱，从塔里木盆地顺南1井奥陶系原油中分离出含硫非烃。采用色谱色质方法，在含硫非烃中检测出了完整的低聚硫代金刚烷系列化合物，包括硫代单金刚烷、硫代双金刚烷和硫代三金刚烷系列共38个化合物，同时还检测到高聚硫代四金刚烷和高聚四金刚烷硫醇系列。以D₁₆-单金刚烷作为定量内标，顺南1井原油中低聚硫代金刚烷、硫代单金刚烷、硫代双金刚烷、硫代三金刚烷系列含量分别为79.88 μg/g （oil）、21.27 μg/g （oil）、31.49 μg/g （oil）和27.12 μg/g （oil），高含量的硫代三金刚烷、高聚硫代金刚烷及高聚金刚烷硫醇的检出表明原油经历了中等的硫酸盐热化学还原作用（TSR）。顺南1井原油中可以检测到高聚四金刚烷和五金刚烷系列，原油中3-甲基+4-甲基双金刚烷含量高，为707 μg/g （oil），指示原油经历了强烈的裂解作用，原油裂解作用叠加TSR反应是造成该原油具有最重的海相全油碳同位素的原因，该原油全油碳同位素为-26.7 ‰。区域的高温高压背景加之走滑断裂的发育为热裂解及TSR作用提供了地质条件。

关键词: 硫代金刚烷, 硫代四金刚烷, 四金刚烷硫醇, 金刚烷, 高聚金刚烷, 热化学硫酸盐还原反应(TSR), 原油裂解, 塔里木盆地

CLC Number:

TE133

Ma Anlai, Jin Zhijun, Zhu Cuishan. Detection and research significance of thiadiamondoids from crude oil in Well Shunnan 1,Tarim Basin[J]. Acta Petrolei Sinica, 2018, 39(1): 42-53.

马安来, 金之钧, 朱翠山. 塔里木盆地顺南1井原油硫代金刚烷系列的检出及意义[J]. 石油学报, 2018, 39(1): 42-53.

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Detection and research significance of thiadiamondoids from crude oil in Well Shunnan 1,Tarim Basin

塔里木盆地顺南1井原油硫代金刚烷系列的检出及意义

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