普通稠油降黏剂辅助氮气吞吐开采机理

doi:10.3969/j.issn.1006-6535.2021.04.012

特种油气藏 ›› 2021, Vol. 28 ›› Issue (4): 88-95.DOI: 10.3969/j.issn.1006-6535.2021.04.012

普通稠油降黏剂辅助氮气吞吐开采机理

李宾飞¹, 臧雨浓^1,2, 刘小波³, 黄咏梅⁴, 李海峰⁵, 朱建军³, 卢小娟³

1.中国石油大学华东,山东青岛 266580;
2.中国石油长庆油田分公司,陕西西安 710021;
3.中国石化胜利油田分公司,山东东营 257000;
4.山东瑞恒兴域石油技术开发有限公司,山东青岛 266061;
5.中海油田服务股份有限公司,天津 300450

收稿日期:2020-07-30 修回日期:2021-05-15 发布日期:2022-02-18
作者简介:李宾飞(1978—),男,教授,2001年毕业于石油大学(华东)石油工程专业,2007年毕业于中国石油大学(华东)油气田开发工程专业,获博士学位,现主要从事稠油开采、注气增产及提高采收率等方面研究工作。
基金资助:
国家重点研发计划项目“稠油化学复合冷采渗流机理及油藏数值模方法”(2018YFA0702400)

Mechanism of Nitrogen Stimulation Assisted by Common Heavy Oil Viscosity Reducer

Li Binfei¹, Zang Yunong^1,2, Liu Xiaobo³, Huang Yongmei⁴, Li Haifeng⁵, Zhu Jianjun³, Lu Xiaojuan³

1. China University of Petroleum East China, Qingdao, Shandong 266580, China;
2. PetroChina Changqing Oilfield Company, Xi'an, Shaanxi 710021, China;
3. Sinopec Shengli Oilfield Company, Dongying, Shandong 257000, China;
4. Shandong Ruiheng Xingyu Petroleum Technology Development Co., Ltd., Qingdao, Shandong 266061, China;
5. China Oilfield Services Limited, Tianjin 300450, China

Received:2020-07-30 Revised:2021-05-15 Published:2022-02-18

摘要/Abstract

摘要： 针对普通稠油降黏剂辅助氮气吞吐过程中开采特征不明确、降黏剂和氮气协同作用机理不明晰的问题,通过微观可视实验和物理模拟,揭示吞吐过程中流体微观分布特征和降黏剂作用机理,对比研究普通稠油氮气吞吐、降黏剂辅助氮气吞吐的开采特征。结果表明:在普通稠油降黏剂辅助氮气吞吐过程中,降黏剂能有效分散原油和氮气,形成水包油型乳状液和少量泡沫,乳状液和泡沫的贾敏效应能有效抑制气窜,扩大波及面积,延长气体弹性能量作用时间,提高氮气有效吞吐周期,室内实验普通稠油降黏剂辅助氮气吞吐开采可提高采收率6.5个百分点。研究结果有助于进一步明确降黏剂筛选原则,为降黏剂辅助氮气吞吐现场应用提供借鉴。

关键词: 氮气吞吐, 普通稠油, 开采特征, 降黏剂, 原油性质

Abstract: To address the issues on indefinite production characteristics and unclear synergistic mechanism of reaction between viscosity reducer and nitrogen during nitrogen stimulation assisted by common heavy oil viscosity reducer, the microscopic distribution characteristics of fluid and the mechanism of viscosity reducer in the stimulation process were discovered by microscopic visual experiments and physical simulation to compare and study the production characteristics of nitrogen stimulation assisted by common heavy oil viscosity reducer. The results showed that in the nitrogen stimulation assisted by common heavy oil viscosity reducer, the viscosity reducer effectively dispersed crude oil and nitrogen to form oil-in-water emulsion and a small amount of foam, and the Jamin effect of the emulsion and foam effectively inhibited gas channeling to enlarge the affected area, extend the action time of elastic energy of gas and prolong the effective nitrogen stimulation cycle, and the oil recovery was improved by 6.5 percentage points with nitrogen stimulation assisted by common heavy oil viscosity reducer in the indoor experiments. The study results are conducive to further clarifying the principles of viscosity reducer selection and provide a reference for the field application of nitrogen stimulation assisted by viscosity reducer.

Key words: nitrogen stimulation, common heavy oil, production characteristics, viscosity reducer, crude oil properties

中图分类号:

TE345

李宾飞, 臧雨浓, 刘小波, 黄咏梅, 李海峰, 朱建军, 卢小娟. 普通稠油降黏剂辅助氮气吞吐开采机理[J]. 特种油气藏, 2021, 28(4): 88-95.

Li Binfei, Zang Yunong, Liu Xiaobo, Huang Yongmei, Li Haifeng, Zhu Jianjun, Lu Xiaojuan. Mechanism of Nitrogen Stimulation Assisted by Common Heavy Oil Viscosity Reducer[J]. Special Oil & Gas Reservoirs, 2021, 28(4): 88-95.

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普通稠油降黏剂辅助氮气吞吐开采机理

Mechanism of Nitrogen Stimulation Assisted by Common Heavy Oil Viscosity Reducer

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