次生水体对火驱开发效果影响的实验

孙梓齐; 赵仁保; 王田田; 龙海庆; 黄田; 陈昌剑

doi:10.3969/j.issn.1006-6535.2024.02.014

特种油气藏 >

2024 , Vol. 31 >Issue 2: 120 - 128

DOI: https://doi.org/10.3969/j.issn.1006-6535.2024.02.014

油藏工程

次生水体对火驱开发效果影响的实验

孙梓齐 ,
赵仁保 ,
王田田 ,
龙海庆 ,
黄田 ,
陈昌剑

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1.中国石油大学油气资源与探测国家重点实验室,北京 102249;
2.中国石油大学(北京),新疆克拉玛依 834000

孙梓齐(1993—),男,2016年毕业于东北石油大学石油工程专业,现为中国石油大学(北京)石油与天然气工程专业在读博士研究生,主要从事稠油火驱开采技术方面的研究。

赵仁保(1971—),男,教授,博士生导师,1994年毕业于河南大学化学化工专业,2006年毕业于中国石油大学(北京)油气田开发工程专业,获博士学位,现主要从事稠油火驱开采技术方面的研究。

收稿日期: 2022-07-23

修回日期: 2024-01-20

网络出版日期: 2024-07-26

基金资助

国家自然科学基金面上项目“火线推进速度的预测和火腔在三维空间中演化的控制机制探索”(52274052);新疆维吾尔族自治区高层次人才引进项目“基于垂向火驱井网条件下超稠油的原位改质辅助开发机理研究”(JXDF0221)

收起

Experiments on Influence of Secondary Water Bodies on Fire Flooding Development Effect

Sun Ziqi ,
Zhao Renbao ,
Wang Tiantian ,
Long Haiqing ,
Huang Tian ,
Chen Changjian

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1. State Key Laboratory of Petroleum Resources and Exploration, China University of Petroleum (Beijing), Beijing 102249, China;
2. China University of Petroleum (Beijing), Karamay, Xinjiang 834000, China

Received date: 2022-07-23

Revised date: 2024-01-20

Online published: 2024-07-26

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摘要

针对注蒸汽开发产生的次生水体对火驱开采效果影响尚不明确的问题,利用燃烧管实验装置,将不同含水量的油砂填充到燃烧管的中间部分,以模拟储层中的次生水体,研究次生水体对火线的传播特征和火驱开发效果的影响。结果表明:次生水体有利于提高火线的推进速度,但会降低火线的燃烧稳定性。当次生水体的含水饱和度高于75.4%时,火线穿过次生水体后难以稳定地推进至生产井,导致开发效果较差;含水饱和度低于50.0%且有一定含油量的次生水体对火驱的开发效果影响不大,火线可以穿过次生水体并稳定推进。研究结果对认识储层中次生水体对火线的稳定推进、火驱开发效果的影响具有重要意义,可为注蒸汽开发油藏火驱技术提供理论参考。

关键词： 稠油油藏; 火烧油层; 次生水体; 燃烧稳定性; 火线推进速度

本文引用格式

孙梓齐 , 赵仁保 , 王田田 , 龙海庆 , 黄田 , 陈昌剑 . 次生水体对火驱开发效果影响的实验[J]. 特种油气藏, 2024 , 31(2) : 120 -128 . DOI: 10.3969/j.issn.1006-6535.2024.02.014

Abstract

Aiming at the problem that the influence of secondary water body generated by steam injection development on fire flooding development effect is still unclear, a combustion tube experimental device was used, and oil sands of different water content were filled into the middle part of the combustion tube to simulate the secondary water body in the reservoir, and to study the influence of the secondary water body on the propagation characteristics of the fireline and the fire flooding development effect. The results show that the secondary water body is favorable for increasing the propulsion velocity of the fireline but would reduce the combustion stability of the fireline. It is difficult for the fireline to advance stably to the production well after passing through the secondary water body when the water saturation of the secondary water body is higher than 75.4%, which leads to a poor development effect; the secondary water body with water saturation lower than 50.0% and a certain amount of oil content does not have much influence on the fire flooding development effect. The fireline could pass through the secondary water body and advance stably. The study results are of great significance to understanding the influence of secondary water bodies in the reservoir on the stable advancement of the fireline and the fire flooding development effect. They could provide theoretical references for the fire flooding technology in steam injection reservoirs.

Key words： heavy oil reservoir; in-situ combustion; secondary water body; combustion stability; fireline advance velocity

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