塔里木盆地麦盖提斜坡罗斯2井奥陶系油气藏的TSR作用:来自分子标志物的证据

doi:10.11743/ogg20180410

石油与天然气地质 ›› 2018, Vol. 39 ›› Issue (4): 730-737,748.doi: 10.11743/ogg20180410

塔里木盆地麦盖提斜坡罗斯2井奥陶系油气藏的TSR作用:来自分子标志物的证据

马安来^1,2, 金之钧¹, 朱翠山³, 顾忆⁴, 李慧莉¹, 路清华⁴

1. 中国石化石油勘探开发研究院, 北京 100083;
2. 有机地球化学国家重点实验室, 广东广州 510640;
3. 长江大学资源学院, 湖北武汉 430100;
4. 中国石化石油勘探开发研究院无锡石油地质研究所, 江苏无锡 214126

收稿日期:2017-09-14 修回日期:2018-05-02 出版日期:2018-08-28 发布日期:2018-07-23
第一作者简介:马安来(1969-),男,副教授、博士,油气地球化学与成藏机理。E-mail:maal.syky@sinopec.com。
基金项目:
国家自然科学基金项目（41772153）；有机地球化学国家重点实验室开放基金项目（SKLOG-201702）；国家科技重大专项（2017ZX05005-002）；中石化科技部项目（P16090，P17049-1）。

Effect of TSR on the crude oil in Ordovician reservoirs of Well Luosi-2 from Maigaiti Slope,Tarim Basin: Evidences from molecular markers

Ma Anlai^1,2, Jin Zhijun¹, Zhu Cuishan³, Gu Yi⁴, Li Huili¹, Lu Qinghua⁴

1. Petroeum Exploration and Production Research Institute, SINOPEC, Beijing, 100083;
2. State Key Laboratory of Organic Geochemistry, Guangzhou, Guangdong 510640, China;
3. College of Resources and Environment, Yangtze University, Wuhan, Hubei 430100, China;
4. Wuxi Research Institute of Petroleum Geology Petroleum Exploration and Production Research Institute, SINOPEC, Wuxi, Jiangsu 214126, China

Received:2017-09-14 Revised:2018-05-02 Online:2018-08-28 Published:2018-07-23

摘要/Abstract

摘要：

采用内标物色谱质谱方法，对罗斯2井原油中金刚烷系列、二苯并噻吩系列和硫代金刚烷系列进行了定量分析。罗斯2井原油中金刚烷系列化合物含量、4-甲基双金刚烷+3-甲基双金刚烷含量分别为10 818，331 μg/g，表明原油经历了较强的裂解作用，裂解比例达到90%左右。金刚烷指标表明原油成熟度在1.6%以上。罗斯2井原油可以检测到完整的硫代单金刚烷、硫代双金刚烷和硫代三金刚烷系列，硫代金刚烷、硫代单金刚烷、硫代双金刚烷和硫代三金刚烷含量分别为192，160，26和6 μg/g。高含量的硫代金刚烷表明罗斯2井原油的TSR强度大于绝大多数塔中地区下奥陶统鹰山组原油。TSR作用导致罗斯2井原油具有较高含量的二苯并噻吩，含量为8 201 μg/g，使得原油二苯并噻吩/菲比值（DBT/P）增加，导致C₀-/C₁-DBTs和C₁-/C₂-DBTs比值增加。

关键词: 硫代金刚烷, 金刚烷, 二苯并噻吩, 硫酸盐热化学还原反应(TSR), 罗斯2井, 塔里木盆地

Abstract:

The study made a quantitative analysis of diamondoid, dibenzothiophenes and thiadiamondoid series in the crude oil from Well Luosi-2 via the GC-MS method with internal standards.The concentrations of diamondoid and 4-+3-methyldiamantane(4-+3-MD)are 10818 and 331 g/g in the study area,suggesting that the crude oil suffered serious cracking and the proportion of cracking oil is up to about 90%.The diamondoid indexes show that the maturity of crude oil from Well Luosi-2 is above 1.6% R_c.Complete thiaadamantane,thiadiamantane,thiatriamantane series were detected from the Well Luosi-2 crude oil,with the contents of thiadiamondoid,thiaadamantane,thiadiamantane,thiatriamantane being 192,160,26 and 6 μg/g respectively.The high concentration of thiadiamondoid is a sign that the degree of thermochemical sulfate reduction(TSR)of oil from Well Luosi-2 is higher than that of most crude oil from the Lower Ordovician Yingshan Formation in Tazhong uplift.TSR results in the higher DBTs, about 8 201 μg/g,in the oil from Well Luosi-2, and in turn the higher ratios of DBT/P,C₀-/C₁-DBT and C₁-/C₂-DBT.

Key words: thiadiamondoid, diamondoid, dibenzothiophene, thermochemical sulfate reduction(TSR), Well Luosi-2, Tarim Basin

中图分类号:

TE135

马安来,金之钧,朱翠山,等. 塔里木盆地麦盖提斜坡罗斯2井奥陶系油气藏的TSR作用:来自分子标志物的证据[J]. 石油与天然气地质, 2018, 39(4): 730-737,748. doi: 10.11743/ogg20180410 Ma Anlai,Jin Zhijun,Zhu Cuishan,et al. Effect of TSR on the crude oil in Ordovician reservoirs of Well Luosi-2 from Maigaiti Slope,Tarim Basin: Evidences from molecular markers[J]. Oil & Gas Geology, 2018, 39(4): 730-737,748. doi: 10.11743/ogg20180410

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塔里木盆地麦盖提斜坡罗斯2井奥陶系油气藏的TSR作用:来自分子标志物的证据

Effect of TSR on the crude oil in Ordovician reservoirs of Well Luosi-2 from Maigaiti Slope,Tarim Basin: Evidences from molecular markers

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