研究和应用岩石裂变压力预测方法用于深层油库的研究和应用
Yanlin Zhang1,2, Yang Tian3, Lina Sun4
1College of Resources and Environment, Yangtze University, Wuhan, 430100, Hubei, China.
Scientific reports
|March 25, 2025
概括
准确的断裂压力预测对于安全的深水库刺激至关重要. 穿孔完成降低了断裂压力,而形成损伤增加了压力,为优化处理和增强碳化合物回收提供了关键的见解.
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
- 地质力学 地质力学
背景情况:
- 由于极端条件,深层和超深层水库面临异常的裂变压力.
- 在断裂酸化处理过程中运行压力升高会增加工程风险.
- 精确预测断裂和注射压力对于安全性和刺激成功至关重要.
研究的目的:
- 为深层水库建立一个全面的裂变压力预测框架.
- 开发开孔和穿孔完成模型,考虑到近井口应力.
- 调查骨折的开始和损伤对压力行为的影响.
主要方法:
- 开发了用于开孔和穿孔完成的岩石破裂压力模型.
- 研究了穿孔改变应力场的断裂启动和计算模型.
- 推导了应力变化和形成损害的损害适应计算模型.
主要成果:
- 与开孔相比,穿孔完成可以将储水池的压力压力降低10-15%.
- 由于应力再分配,形成损伤会使裂纹压力增加8-12%.
- 最佳的穿孔方向和密度显著降低了压力,而尺寸的影响最小.
结论:
- 多次完成预测方法提高了深水库的运行安全.
- 这种方法是优化完成设计和最大限度地回收碳化合物的战略工具.
- 为深层石油资源的经济可行开发提供技术基础.
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