溶剂辅助蒸汽驱后期提高稠油采收率研究

doi:10.11885/j.issn.1674-5086.2021.05.19.02

西南石油大学学报(自然科学版) ›› 2023, Vol. 45 ›› Issue (3): 98-108.DOI: 10.11885/j.issn.1674-5086.2021.05.19.02

溶剂辅助蒸汽驱后期提高稠油采收率研究

刘佳丽¹, 黄思源¹, 蒋琪¹, 王宏远², 王中元²

1. 油气藏地质及开发工程全国重点实验室·西南石油大学, 四川成都 610500;
2. 中国石油辽河油田公司, 辽宁盘锦 124000

收稿日期:2021-05-19 出版日期:2023-06-10 发布日期:2023-07-07
通讯作者: 刘佳丽,E-mail:997331612@qq.com
作者简介:刘佳丽，1989年生，女，汉族，四川成都人，博士，主要从事油气田开发方面的研究。E-mail：997331612@qq.com；
黄思源，1991年生，男，汉族，四川南充人，副教授，博士，主要从事油气田开发方面的研究。E-mail：298165993@qq.com；
蒋琪，1963年生，男，汉族，四川绵阳人，教授，博士，主要从事油气田开发方面的研究。E-mail：qijiang@shaw.ca；
王宏远，1979年生，男，汉族，黑龙江鹤岗人，教授级高级工程师，主要从事稠油开发研究。E-mail：w_hongyuan@petrochina.com.cn；
王中元，1973年生，男，汉族，黑龙江大庆人，高级工程师，硕士，主要从事注汽稠油提高采收率方面的研究工作。E-mail：wangzy18@petrochina.com.cn
基金资助:
中国石油科技重大专项(2017E 1604)

A Study on Improving Heavy Oil Recovery by Solvent Assisted Steam Flooding in Late Stage

LIU Jiali¹, HUANG Siyuan¹, JIANG Qi¹, WANG Hongyuan², WANG Zhongyuan²

1. National Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China;
2. Liaohe Oilfield Company, CNPC, Panjin, Liaoning 124000, China

Received:2021-05-19 Online:2023-06-10 Published:2023-07-07

摘要/Abstract

摘要： 以辽河油田杜84块兴VI组超稠油油藏为对象，根据SAGD蒸汽汽腔操作压力，筛选与蒸汽露点温度相近的己烷作为辅助溶剂，进行单管驱替实验。研究了不同温度下，溶剂类型和浓度对稠油的降黏效果，并对比了不同浓度的己烷辅助蒸汽驱与纯蒸汽驱的驱油效率。实验结果分析了溶剂辅助对蒸汽驱后期的油汽比，剩余油饱和度和最终采收率的影响，揭示了蒸汽温度和溶剂浓度对蒸汽驱效率的影响规律。研究结果可为SAGD开发后期提高稠油开采效率、优化现场操作参数提供理论支持。

关键词: 溶剂辅助注蒸汽, 热采, 稠油, 提高采收率, 物理实验

Abstract: This paper takes the Xing VI Group super-heavy oil reservoir in Block Du 84 of Liaohe Oilfield as the research object, and conducts an indoor evaluation study on solvent assist as a replacement technology to improve the efficiency of SAGD production. According to the current operating pressure in the SAGD steam chamber, hexane, which has a temperature similar to the steam dew point, was screened as an auxiliary additive for SAGD. In the laboratory, we first studied the evaluation of the viscosity reduction effect of heavy oil at different temperatures, solvent types and concentrations, and carried out comparison experiments of oil displacement efficiency between hexane-assisted steam flooding and pure steam flooding at different concentrations. Through solvent-assisted analysis of water cut, remaining oil saturation and final recovery improvement degree in the later stage of steam flooding, the influence of steam temperature and solvent concentration on steam flooding efficiency are revealed. The research results in this paper provide theoretical support for using solvents to assist in improving the efficiency of heavy oil recovery and optimizing on-site operating parameters in the later stage of SAGD development.

Key words: solvent assited steam flooding, steam flooding, heavy oil, enhanced oil recovery, physics experiments

中图分类号:

TE357

刘佳丽, 黄思源, 蒋琪, 王宏远, 王中元. 溶剂辅助蒸汽驱后期提高稠油采收率研究[J]. 西南石油大学学报(自然科学版), 2023, 45(3): 98-108.

LIU Jiali, HUANG Siyuan, JIANG Qi, WANG Hongyuan, WANG Zhongyuan. A Study on Improving Heavy Oil Recovery by Solvent Assisted Steam Flooding in Late Stage[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2023, 45(3): 98-108.

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溶剂辅助蒸汽驱后期提高稠油采收率研究

A Study on Improving Heavy Oil Recovery by Solvent Assisted Steam Flooding in Late Stage

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