数字模拟和参数优化,用于水-CO2强烈敏感水库的洪水2
Xu Deng1, Meilong Fu1, Jie Li2
1Hubei Provincial Key Laboratory of Oil and Gas Drilling and Production Engineering, School of Petroleum Engineering, Yangtze University, Wuhan 430100, China.
ACS omega
|March 4, 2024
概括
二氧化碳 (CO2) 泛滥通过改善水力驱动,提高了低透性水库中的石油回收. 优化的二氧化碳气体-水交替泛滥显著提高了形成压力和石油回收效率.
科学领域:
- 石油工程是石油工程中的一个.
- 储水库工程 储水库工程
- 增强石油回收的方法
背景情况:
- 在T油田的Kexia集团的低透性水库表现出不充分的水力驱动效应.
- 二氧化碳 (CO2) 泛滥是一个可行的策略,可以加速水库开发和改善石油回收.
研究的目的:
- 在井组80513.3中构建一个对水敏感的CO2后洪水的模拟模型.
- 优化二氧化碳注入策略,包括持续的气体注入和二氧化碳气体-水交替洪水.
主要方法:
- 基于水库和流体参数的模拟模型的开发.
- 优化多指标和多因素注入和提取方案.
- 关键控制因素的分析:气体注入速率,周期,气与水的比率和底孔流量压力.
主要成果:
- 连续5年CO2泛滥表明,CO2气-水交替泛滥更合适.
- 通过特定的气体注入速率,1: 1气水比,90天注入周期和25MPa底孔流量压力实现了最佳开发计划.
- 形成压力和石油回收效率的显著增加.
结论:
- 二氧化碳泛滥,特别是气水交替注入,对于具有低透性的水库是有效的.
- 优化的参数为未来的区块开发和改进的石油回收提供了一个多功能模型.
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