闫红星,杨俊印,刘家林,陶硕,杨鹏成
YAN Hongxing,YANG Junyin,LIU Jialin,TAO Shuo,YANG Pengcheng

• 1:中国石油辽河油田分公司勘探开发研究院
• 2:中国石油辽河油田分公司钻采工艺研究院

摘要(Abstract)：

为了认识稀油火驱过程中原油微观性质的变化规律,利用室内一维物理模拟装置开展了稀油的火驱实验,并对火驱高温氧化后的原油开展了族组分、官能团、轻烃、饱和烃等方面的研究。研究表明:稀油火驱高温氧化后品质变好,含氧的羰基官能团特征明显、烷基侧链变短、碳链支化程度变高;轻烃、饱和烃受高温氧化作用影响较大,轻烃化合物中环烷烃与正构烷烃含量增加,环烷烃中侧链烷基越长含量越高,六元环轻烃化合物具有优先生成芳烃类化合物的优势,饱和烃中碳链越长越容易与氧气发生氧化,高温氧化作用不会选择性断裂奇碳数或偶碳数正构烷烃,类异戊二烯烃在高氧化过程中稳定性较好。该研究探索了稀油火驱过程原油性质变化的机理,为稀油油藏火驱开发提供基础与理论支持。
In order to understand the changing laws of the crude oil micro-properties in the process of thin oil fire flooding, with the help of the indoor one-dimension physical simulation instruments, the thin oil fire flooding experiment was carried out, and the studies were engaged on the group compositions, functional group, light hydrocarbons and saturated hydrocarbons of the crude oil after fire-flooding high-temperature oxidation. The studies show that the quality of thin oil after high temperature oxidization is better, the characteristics of carbonyl functional group with oxygen are obvious, the alky side chain becomes shorter and the branched degree of carbon chain is higher; the light hydrocarbon and saturated hydrocarbon are greatly affected by high-temperature oxidation, the contents of the cycloalkane and n-alkane in light hydrocarbon compound increase, and the longer the side-chain alkyl in cycloalkane is, the higher its content will be; the hydrocarbons with hexatomic ring structure are more easily converted into aromatics compounds, and the longer the carbon chain in saturated hydrocarbons, the easier it is to be oxidized; high-temperature oxidation will not selectively break the odd-carbon-number or even-carbon-number n-alkanes, the stability of isoprenoid hydrocarbon in the process of high-temperature oxidation is much better. The studies have explored the changing mechanism of thin oil properties in the process of fire flooding, and provided the basis and theoretical support for the fire flooding development of thin oil reservoir.

关键词(KeyWords)： 稀油;火驱;高温氧化;色谱指纹;轻烃;饱和烃;官能团
thin oil;fire flood;high-temperature oxidation;chromatographic fingerprint;light hydrocarbon;saturated hydrocarbon;functional group

Abstract:

Keywords:

基金项目(Foundation): 国家科技重大专项“大型油气田及煤层气开发”子课题“辽河、新疆稠油/超稠油开发技术示范工程”(2016ZX05055)

作者(Author): 闫红星,杨俊印,刘家林,陶硕,杨鹏成
YAN Hongxing,YANG Junyin,LIU Jialin,TAO Shuo,YANG Pengcheng

DOI: 10.19597/j.issn.1000-3754.202005024

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