火驱原油活性氢组分变化规律认识

杨洪; 苏日古; 陈莉娟; 王旭生; 陈龙; 潘竟军; 郭勇

doi:10.3969/j.issn.1006-6535.2022.06.016

特种油气藏 >

2022 , Vol. 29 >Issue 6: 127 - 132

DOI: https://doi.org/10.3969/j.issn.1006-6535.2022.06.016

油藏工程

火驱原油活性氢组分变化规律认识

杨洪 ,
苏日古 ,
陈莉娟 ,
王旭生 ,
陈龙 ,
潘竟军 ,
郭勇

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1.中国石油新疆油田分公司,新疆克拉玛依 834000;
2.中国科学院兰州化学物理研究所,甘肃兰州 730000

杨洪(1988—),男,工程师,2011年毕业于中国石油大学(华东)化学工程与工艺专业,2014年毕业于该校油气田开发工程专业,获硕士学位,现主要从事油气田开发研究工作。

收稿日期: 2022-03-29

修回日期: 2022-07-25

网络出版日期: 2023-01-10

基金资助

中国石油科技项目“新疆稠油火驱过程中成焦物理化学机理研究”(ks2020-01-05)

收起

Recognition of Variation Law of Active Hydrogen Component of Fire-Flooded Crude Oil

Yang Hong ,
Su Rigu ,
Chen Lijuan ,
Wang Xusheng ,
Chen Long ,
Pan Jingjun ,
Guo Yong

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1. PetroChina Xinjiang Oilfield Company, Karamay, Xinjiang 834000, China;
2. Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China

Received date: 2022-03-29

Revised date: 2022-07-25

Online published: 2023-01-10

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摘要

为识别火驱开发中是否发生高温氧化以及高温氧化程度,应用实沸点蒸馏法对新疆油田红浅试验区火驱受效前后的原油进行分离,绘制相应的实沸点蒸馏曲线,测定各馏分的酸值,并用超高分辨质谱仪对不同类型酸性化合物在负离子模式电喷雾电离源条件下进行分析,对O2类组分的等效双键指数(DBE)和碳数分布进行了详细归类。结果表明:虽然火驱受效前后原油酸值波动范围小于1.0 mg/g,但受效原油中的中低沸点组分含量和实沸点蒸馏质量收率明显提高,受效原油的部分组分氧化生成了含有活性氢官能团的化合物,在200～250 ℃、300～420 ℃沸点范围出现2个波峰;质谱分析表明,火驱见效原油O2类组分中DBE为3和4的相对丰度增大,二元、三元环烷酸占比增加。研究成果可为分析原油火驱过程和馏分产品精制提供指导。

关键词： 火驱; 原油组分; 氢组分变化; 实沸点蒸馏; 等效双键指数; O2类

本文引用格式

杨洪 , 苏日古 , 陈莉娟 , 王旭生 , 陈龙 , 潘竟军 , 郭勇 . 火驱原油活性氢组分变化规律认识[J]. 特种油气藏, 2022 , 29(6) : 127 -132 . DOI: 10.3969/j.issn.1006-6535.2022.06.016

Abstract

In order to enrich the methods for identifying whether high temperature oxidation occurs and the degree of high temperature oxidation during the fire flooding development, the real boiling point distillation method was applied to separate the crude oil before and after the effectiveness of fire flooding in Hongqian Area of Xinjiang Oilfield, the corresponding real boiling point distillation curves were plotted, and the acid value of each fraction was measured. The high-resolution mass spectrometry was used to analyze different types of acidic compounds under the condition of electrospray ionization source in negative ion mode, and the equivalent double bond index (DBE) and carbon number distribution of O2-type components were classified in details. The results show that although the fluctuation range of the acid value of crude oil before and after the effectiveness of fire flooding is less than 1.0 mg/g, the content of low and medium boiling point components in the effected crude oil and the yield of real boiling point distillation mass are significantly improved, some components of the effected crude oil are oxidized to generate compounds containing active hydrogen functional groups, and two peaks appeared in the boiling point range of 200-250 ℃and 300-420 ℃. The mass spectrometry analysis shows that the relative abundances of DBE 3 and 4 in the O2 components of the fire flooding effected crude oil increases, and the proportion of two-membered and three-membered naphthenic acids increases. The research results can provide guidance for the analysis of crude oil fire flooding process and the refining of distillate products.

Key words： fire flooding; crude oil component; hydrogen component change; real boiling point distillation; equivalent double bond index; O2 type

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