塔里木盆地顺南1井奥陶系原油中乙基桥键金刚烷化合物的二维气相色谱分析

GC×GC-TOFMS analysis of ethanodiamondoids in Ordovician oil from well SN1, Tarim Basin

余晓 马安来 李贤庆 朱秀香 费剑炜

YU Xiao MA Anlai LI Xianqing ZHU Xiuxiang FEI Jianwei

中国矿业大学(北京) 煤炭资源与安全开采国家重点实验室, 北京 100083 中国矿业大学(北京) 地球科学与测绘工程学院, 北京 100083 中国石化 石油勘探开发研究院, 北京 102206 中国石化 西北油田分公司, 乌鲁木齐 830060

State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology (Beijing), Beijing 100083, China College of Geoscience and Surveying Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China SINOPEC Petroleum Exploration and Production Research Institute, Beijing 102206, China SINOPEC Northwest Oilfield Company, Urumqi, Xinjiang 830060, China

运用全二维气相色谱—飞行时间质谱方法（GC×GC-TOFMS）从塔里木盆地顺托果勒地区顺南1井奥陶系原油中定量检测到81个1~3笼的乙基桥键金刚烷化合物，包括47个乙基桥键单金刚烷化合物，总含量为27 594.0 μg/g；32个乙基桥键双金刚烷化合物，总含量为4 415.1 μg/g；2个乙基桥键三金刚烷系列化合物，总含量为16.8 μg/g；建立了金刚烷—乙基桥键金刚烷的二维色谱保留指数图版。结果显示，金刚烷类和乙基桥键金刚烷类化合物保留时间位置具有如下关系：单金刚烷系列 < 乙基桥键单金刚烷系列 < 双金刚烷系列 < 乙基桥键双金刚烷系列 < 三金刚烷系列 < 乙基桥键三金刚烷系列 < 四金刚烷系列。作为石油中热稳定性最高的饱和烃类，乙基桥键金刚烷化合物的定量分析结果，有望为原油裂解和硫酸盐热化学还原反应（TSR）等油藏次生改造作用提供新的指标。

By 2D gas chromatography and time-of-flight mass spectrometry (GC×GC-TOFMS), 81 ethanodiamondoids with 1-3 cages were detected quantitatively in Ordovician crude oil from well SN1, Shuntuoguole area, Tarim Basin, including 47 ethanoadamantanes with total content of 27 594.0 μg/g, 32 ethanodiamantanes with total content of 4 415.1 μg/g, and 2 ethanotriamantanes with total content of 16.8 μg/g. The template of 2D chromatogram retention index of diamondoids-ethanodiamondoids was constructed. The results demonstrated that the position of retention time of diamondoids and ethanodiamondoids has the following relationship, namely, adamantanes < ethanoadamantanes < diamantanes < ethanodiamantanes < triadamantanes < ethanotriamantanes < tetradamantanes. Quantitative analytical result of ethanoadamantanes as saturated hydrocarbons with the highest thermal stability in crude oil, is expected to provide new indexes for secondary reservoir reconstruction, i.e. crude oil cracking and thermochemical sulfate reduction (TSR).

国家自然科学基金项目 42272167;国家自然科学基金项目 U19B6003;国家自然科学基金项目 41772153;中国石化科技部项目 P19024-5;中国石化科技部项目 P20058-1;中国石化科技部项目 P21085-8

https://doi.org/10.11781/sysydz202302327