高含水条件下CO2混相驱替实验

doi:10.7623/syxb201711008

石油学报 ›› 2017, Vol. 38 ›› Issue (11): 1293-1298.DOI: 10.7623/syxb201711008

高含水条件下CO₂混相驱替实验

吕成远^1,2, 王锐^1,2, 崔茂蕾^1,2, 唐永强^1,2, 周霞^1,2

1. 中国石油化工集团公司海相油气藏开发重点实验室北京 100083;
2. 中国石油化工股份有限公司石油勘探开发研究院提高采收率技术研究所北京 100083

收稿日期:2017-02-23 修回日期:2017-08-08 出版日期:2017-11-25 发布日期:2017-12-08
通讯作者: 吕成远,男,1963年9月生,1986年获华东石油学院学士学位,2002年获中国科学院地质与地球物理研究所博士学位,现为中国石油化工股份有限公司石油勘探开发研究院教授级高级工程师,主要从事提高采收率技术方面的研究工作。Email:lcy.syky@sinopec.com
作者简介:吕成远,男,1963年9月生,1986年获华东石油学院学士学位,2002年获中国科学院地质与地球物理研究所博士学位,现为中国石油化工股份有限公司石油勘探开发研究院教授级高级工程师,主要从事提高采收率技术方面的研究工作。Email:lcy.syky@sinopec.com
基金资助:
国家重大科技专项（2016ZX05048-003）资助。

Displacement experiment of CO₂ miscible flooding under high water condition

Lü Chengyuan^1,2, Wang Rui^1,2, Cui Maolei^1,2, Tang Yongqiang^1,2, Zhou Xia^1,2

1. Sinopec Key Laboratory of Marine Oil & Gas Reservoirs Production, Beijing 100083, China;
2. Department of Enhanced Oil Recovery, Sinopec Petroleum Exploration and Production Research Institute, Beijing 100083, China

Received:2017-02-23 Revised:2017-08-08 Online:2017-11-25 Published:2017-12-08

摘要/Abstract

摘要：

油藏水驱后进行CO₂驱已在油田现场取得了成功，但由于油藏的高含水饱和度，导致了CO₂与原油间的接触方式发生改变，混相过程也受到一定制约。为研究高含水条件对CO₂混相驱的影响，制作了盲端微观可视化模型，进行了水驱前后CO₂混相过程微观实验。结合不同含水饱和度条件下的CO₂驱替实验，明确了CO₂混相驱替特征以及含水饱和度对CO₂驱油效率的影响。结果表明，高含水饱和度会对CO₂与原油的接触过程产生一定的屏蔽作用，注入的CO₂不能直接接触到剩余油，从而导致CO₂与原油的混相过程被大大延缓，进而导致高含水条件下CO₂驱见效时间被推迟。

关键词: 高含水条件, CO₂驱, 动态混相, 盲端模型, 驱替特征

Abstract:

CO₂ flooding has been successfully applied on site after water flooding. But due to the existence of high water saturation, the contact mode between CO₂ and crude oil has been changed, and the development of miscible process is also restricted. Aiming at the influences of high water condition on CO₂ miscible flooding process, the microcosmic visualization models of dead ends were prepared for the microcosmic visualiation experiment of CO₂ miscible process before and after water flooding. In combination with CO₂ flooding experiment under different water cut conditions, the characteristics of CO₂ miscible flooding were clarified as well as the effects of water saturation condition on CO₂ displacement efficiency. The results show that high water saturation will generate a certain shielding effect in the process of CO₂ contacting with crude oil, and the injected CO₂ is unable to contact residual oil directly. So the CO₂-crude oil miscible process is greatly postponed, thus causing the delayed responding time of CO₂ flooding under high water condition.

Key words: high water condition, CO₂ flooding, dynamic misciblity, dead-end model, displacement characteristics

中图分类号:

TE341

吕成远, 王锐, 崔茂蕾, 唐永强, 周霞. 高含水条件下CO₂混相驱替实验[J]. 石油学报, 2017, 38(11): 1293-1298.

Lü Chengyuan, Wang Rui, Cui Maolei, Tang Yongqiang, Zhou Xia. Displacement experiment of CO₂ miscible flooding under high water condition[J]. Acta Petrolei Sinica, 2017, 38(11): 1293-1298.

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高含水条件下CO₂混相驱替实验

Displacement experiment of CO₂ miscible flooding under high water condition

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