|本期目录/Table of Contents|

[1]吴春洲,张伟,孙永涛,等.耐温防乳驱油体系辅助稠油热采研究与应用[J].断块油气田,2020,27(03):365-369.[doi:10.6056/dkyqt202003019]
 WU Chunzhou,ZHANG Wei,SUN Yongtao,et al.Study and application of oil displacement system of temperature resistant and anti-emulsion surfactant to assist heavy oil thermal recovery[J].Fault-Block Oil and Gas Field,2020,27(03):365-369.[doi:10.6056/dkyqt202003019]
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耐温防乳驱油体系辅助稠油热采研究与应用(PDF)
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《断块油气田》[ISSN:1005-8907/CN:41-1219/TE]

卷:
27
期数:
2020年03
页码:
365-369
栏目:
开发工程
出版日期:
2020-05-25

文章信息/Info

Title:
Study and application of oil displacement system of temperature resistant and anti-emulsion surfactant to assist heavy oil thermal recovery
文章编号:
19
作者:
吴春洲1张伟2孙永涛1王秋霞2刘昊2王少华1
1.中海油田服务股份有限公司油田生产事业部,天津 300459;2.中海石油(中国)有限公司天津分公司,天津 300450
Author(s):
WU Chunzhou1 ZHANG Wei2 SUN Yongtao1 WANG Qiuxia2 LIU Hao2 WANG Shaohua1
1.Oilfield Production Department, China Oilfield Services Ltd., CNOOC, Tianjin 300459, China;
2.Tianjin Branch of CNOOC Ltd., Tianjin 300450, China
关键词:
稠油油包水乳化防乳驱油体系耐高温驱油效率
Keywords:
heavy oil wate-in-oil emulsion anti-emulsion and flooding system high temperature resistance oil displacement efficiency
分类号:
TE357
DOI:
10.6056/dkyqt202003019
文献标志码:
A
摘要:
稠油热采过程中,蒸汽冷凝水易于稠油乳化而形成油包水乳状液,造成地层乳化堵塞、产出液处理困难等问题,使热采驱油效果变差。针对以上问题,对一种耐高温防乳驱油体系的静态性能(耐温性能,防乳、破乳性能,降黏效果和界面性能)和动态驱油效果进行了室内评价。实验结果表明:该体系280 ℃老化4 h后,地层温度下的防乳化率为83%,降黏率67%;溶液与稠油之间的界面张力为0.051 mN/m;润湿角为8°,可使岩石表面润湿性由油湿转变为水湿;破乳率为89%,有助于后续产出液的处理;体系可使稠油热采驱油效率提高11.6百分点;优化后的体系溶液最佳注入质量分数为0.5%。该体系在渤海某稠油油田热采过程中共实施3井次,取得了良好的应用效果。
Abstract:
In the process of heavy oil thermal recovery, the condensate from steam is easy to emulsify heavy oil to form wate-in-oil emulsion, which causes the formation emulsification and blockage. Then the output liquid is difficult to deal with, and the oil displacement effect becomes worse. In view of the above problems, the static performance(temperature resistance, anti-emulsion, demulsification performance, viscosity reduction effect and interface performance) and dynamic oil displacement effect of temperature resistant and anti-emulsion surfactant are evaluated. The experimental results show that the system can withstand temperature of 280 ℃. After aging for 4 hours at 280 ℃, the anti-emulsion rate was 83% and viscosity reduction rate was 67% at the formation temperature of 55 ℃. The interfacial tension between the system solution and heavy oil is 0.051 mN/m. The wetting angle of the system was 8°, which can cause the change from oil-wet to water-wet on the rock surface. The demulsification rate of the system was 89%, which is helpful for the subsequent output liquid treatment. The dynamic oil displacement experiments show that the system to assist heavy oil thermal recovery can increase oil displacement efficiency by 11.6%, and the optimal concentration of system was 0.5%, the system was used for 3 wells in the thermal production process of a heavy oil field in Bohai.

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备注/Memo

备注/Memo:
收稿日期:2019-11-20;改回日期:2020-03-10。
第一作者:吴春洲,男,1987年生,工程师,硕士,2013年毕业于中国石油大学(华东)油气田开发工程专业,主要从事稠油开采相关研究工作。E-mail:wuchzh2@cosl.com.cn。基金项目:国家科技重大专项专题“规模化多元热流体热采工程技术示范”(2016ZX05058-003-009)
更新日期/Last Update: 2020-05-21