考虑变周期注气量和经济效益的致密油藏CO2吞吐注采参数优化

doi:10.3969/j.issn.1006-6535.2024.06.014

特种油气藏 ›› 2024, Vol. 31 ›› Issue (6): 114-119.DOI: 10.3969/j.issn.1006-6535.2024.06.014

考虑变周期注气量和经济效益的致密油藏CO₂吞吐注采参数优化

牛子敬^1,2, 赵忠军³, 张园^1,2, 胡景宏^1,2

1.中国地质大学(北京),北京 100083;
2.北京市非常规天然气能源地质评价与开发工程重点实验室,北京 100083;
3.中国石油长庆油田公司,陕西西安 710018

收稿日期:2023-12-08 修回日期:2024-09-01 出版日期:2024-12-25 发布日期:2025-01-22
作者简介:牛子敬(1999—),男,2022年毕业于华北理工大学石油工程专业,现为中国地质大学(北京)石油与天然气工程专业在读硕士研究生,主要从事油气田方面的开发研究工作。
基金资助:
国家自然科学基金“基于气-液硫-固硫复杂相变的深层高含硫气藏渗流机理研究”(52074248),“纳米孔隙约束的凝析气藏气液相平衡与流动机制”(52474052);北京市科协“2023—2025年度青年人才托举工程”(BYESS2023414);中央高校基本科研项目“非常规油气高精度勘探与开发关键技术体系构建”(2652022207)

Optimization of injection-production parameters of CO₂ huff and puff in tight reservoirs considering variable cycle gas injection and economic benefits

Niu Zijing^1,2, Zhao Zhongjun³, Zhang Yuan^1,2, Hu Jinghong^1,2

1. China University of Geosciences (Beijing),Beijing 100083,China;
2. Key Laboratory of Unconventional Natural Gas Geological Evaluation and Development Engineering,Beijing 100083,China;
3. PetroChina Changqing Oilfield Company,Xi'an,Shaanxi 710018,China

Received:2023-12-08 Revised:2024-09-01 Online:2024-12-25 Published:2025-01-22

摘要/Abstract

摘要： CO₂吞吐是致密油藏提高采收率的重要手段,但在实施过程中,CO₂吞吐换油率随吞吐周期增加而降低。为提高CO₂吞吐换油率,改善CO₂吞吐开发效果,采用数值模拟方法,进行变周期注气量的CO₂吞吐注采参数优化研究,并开展经济评价。结果表明:变周期注气量的吞吐方案累计产油量为32 983.4 m³,换油率为1.11,高于正交实验的优选方案。经济评价结果显示,变周期注气量的CO₂吞吐方案经济效益最好,其净现值为345.07×10⁴元,内部收益率为18.06%。该研究成果可为致密油藏CO₂吞吐高效开发提供理论指导。

关键词: 致密油藏, CO₂吞吐, 周期注气量, 正交实验, 经济评价

Abstract: The oil exchange rate of CO₂ huff and puff decreases with the increase of CO₂ huff and puff cycle.In order to improve the rate,the numerical simulation method is used to optimize the injection-production parameters of CO₂ huff and puff with variable injection time,and the economic evaluation is carried out.The results show that the cumulative oil production of the cyclic gas injection scheme is 32 983.4 m³,and the oil change rate reach to 1.11,which is higher than the optimal scheme of orthogonal experiment.The economic evaluation results show that the CO₂ huff and puff scheme with variable cycle gas injection has the best economic benefits,with a net present value of 345.07×10⁴ yuan and an internal rate of return of 18.06%.The research results can provide theoretical guidance for the efficient development of CO₂ huff and puff in tight reservoirs.

Key words: tight reservoir, CO₂ huff, periodic gas injection, orthogonal experiment,economic evaluation

中图分类号:

TE348

牛子敬, 赵忠军, 张园, 胡景宏. 考虑变周期注气量和经济效益的致密油藏CO₂吞吐注采参数优化[J]. 特种油气藏, 2024, 31(6): 114-119.

Niu Zijing, Zhao Zhongjun, Zhang Yuan, Hu Jinghong. Optimization of injection-production parameters of CO₂ huff and puff in tight reservoirs considering variable cycle gas injection and economic benefits[J]. Special Oil & Gas Reservoirs, 2024, 31(6): 114-119.

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考虑变周期注气量和经济效益的致密油藏CO₂吞吐注采参数优化

Optimization of injection-production parameters of CO₂ huff and puff in tight reservoirs considering variable cycle gas injection and economic benefits

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