[1]徐世贵  刘月娥  邬国栋  高连真  付静静  徐向红.克拉玛依风城油田稠油低温氧化过程[J].石油钻采工艺,2018,40(6):794-799.[doi:10.13639/j.odpt.2018.06.019]
 XU Shigui,LIU Yuee,et al.Low temperature oxidation process of heavy oil in Fengcheng Oilfield, Karamay[J].Oil Drilling & Production Technology,2018,40(6):794-799.[doi:10.13639/j.odpt.2018.06.019]
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克拉玛依风城油田稠油低温氧化过程
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《石油钻采工艺》[ISSN:1000-7393/CN:13-1072/TE]

卷:
40卷
期数:
2018年6期
页码:
794-799
栏目:
油气开采
出版日期:
2018-11-20

文章信息/Info

Title:
Low temperature oxidation process of heavy oil in Fengcheng Oilfield, Karamay
文章编号:
1000 – 7393( 2018 )06 – 0794– 06
作者:
徐世贵12  刘月娥12  邬国栋3  高连真12  付静静12  徐向红12
1. 新疆大学化学化工学院; 2. 新疆大学煤炭清洁转化与化工过程自治区重点实验室; 3. 中国石油新疆油田分公司工程技术研究院
Author(s):
XU Shigui1 2 LIU Yue’e1 2 WU Guodong3 GAO Lianzhen1 2 FU Jingjing1 2 XU Xianghong1 2
1. College of Chemistry & Chemical Engineering, Xinjiang University, Urumqi 830046, Xinjiang, China; 2. Key Laboratory of Coal Clean Conversion and Chemical Engineering Process, Autonomous Region, Xinjiang University, Urumqi 830046, Xinjiang, China; 3. Engineering Technology Research Institute, PetroChina Xinjiang Oilfield Company, Karamay 834000, Xinjiang, China
关键词:
稠油注空气低温氧化SARA 组分黏度风城油田
Keywords:
heavy oil air injection low temperature oxidation SARA composition viscosity Fengcheng Oilfield
分类号:
TE345
DOI:
10.13639/j.odpt.2018.06.019
文献标志码:
A
摘要:
风城油田稠油胶质含量高,随着开采的不断深入,部分油井出现吞吐效果变差、含水率升高的现象。为提高克拉玛依风城区稠油油藏注空气采油过程的安全性,进行了低温氧化实验。实验模拟了克拉玛依风城稠油油藏压力(8 MPa),分别考察油样在不同温度(80~250 ℃)条件下的低温氧化过程,对火烧油层初始低温氧化阶段的油样物性变化、组分变化规律、气体变化进行研究。结果表明,低温氧化反应使稠油密度增加了2%,黏度增加0.72 倍;IR 分析表明,稠油与空气发生的低温氧化反应使含氧类官能团(?C=O、脂肪醚)的吸收强度明显增强;SARA 组分活性强弱为:芳香分>饱和分>胶质,250 ℃反应后, 沥青质增加较多;气体中N2 含量基本没变,O2 含量由21% 降至5%,CO、CH4 和CO2 气体含量升高,由键能法计算结果可知, 每消耗1 moL 的O2 平均放热量391.54~420.58 kJ。该研究为现场试验设计和应用提供了理论基础数据和技术指导。
Abstract:
The resin content of heavy oil in Fengcheng Oilfield is high. And as the exploitation of heavy oil in this area goes further, some oil wells present the problems of poor stimulation effect and high water cut. In order to improve the safety of air injection for oil recovery in heavy oil reservoirs in Fengcheng Oilfield Karamay, low temperature oxidation experiment was carried out. In the experiment, the low temperature oxidation situations of oil samples in different temperatures (80-250 ℃) were investigated under the simulated pressure (8 MPa) of heavy oil reservoirs in Fengcheng Block of Karamay. The physical property change, compositional change and gas change of oil samples in the initial low temperature oxidation stage of in-situ combustion were studied. It is indicated that due to the low temperature oxidation reaction, the density of heavy oil is increased by 2% and its viscosity is increased by 0.72 times. IR analysis results show that the low temperature oxidation reaction between heavy oil and air increases the absorption intensity of oxygenated functional group (—C=O and aliphatic ether) significantly. The activity of SARA compositions is ranked as aromatic>saturate>resin. After reaction at 250 ℃, the asphaltene content increases more. N2 content of the air is basically unchanged, O2 content decreases from 21% to 5%, and the content of CO, CH4 and CO2 increases. The calculation results by bond energy method shows that the average thermal discharge corresponding to the O2 consumption of 1 moL is 391.54-420.58 kJ. The research results provide the basic data for field experiment design and field application.

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更新日期/Last Update: 2019-04-10