在狭窄油井水平井中临时堵塞分阶段断裂过程中断裂传播的数值模拟
Jianxiong Li1, Zhanyuan Zhu1, Wen Hua1
1College of Mechanical and Electrical Engineering, Xichang University, Xichang 615013, China.
ACS omega
|April 29, 2024
概括
临时堵塞分阶段断裂 (TPSF) 通过管理流体再分配和应力干扰,改善了紧密油中的均断裂传播. 这种方法提高了与传统破裂相比的断裂几何控制.
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
- 计算力学 计算力学 计算力学
背景情况:
- 液压压裂对于提高从紧密储中提取石油和天然气的效果至关重要.
- 了解复杂的骨折传播和流体动力学对于优化骨折治疗至关重要.
- 骨折之间的压力干扰可以导致不均的刺激和降低井生产率.
研究的目的:
- 在紧密油库中模拟和分析临时堵塞分阶段破裂 (TPSF) 期间的断裂传播.
- 调查运行参数和水库特性对多断裂传播的影响.
- 评估TPSF在实现更均的骨折生长方面的有效性.
主要方法:
- 开发一个结合的有限元模型,包括用户定义的穿孔元件和孔隙压力计算.
- 与标准的有限元素方法对整合模型的精度进行验证.
- 分析集群间距,应力差异系数 (SDC),注入速率和屏障拉伸强度的参数案例研究.
主要成果:
- TPSF有效地减轻了应力干扰的负面影响,促进了来自多个集群的骨折更均的传播.
- 超过40米的集群间距的增加表明减少应力干扰的回报正在减少.
- 较高的注射速率增加了断裂宽度和透风险,而屏障拉伸强度和水平SDC显著影响了断裂几何和透.
结论:
- TPSF提供了一种可行的策略,可以优化断裂网络的复杂性,并提高储刺激的统一性.
- 仔细考虑注射速率和集群间距等操作参数对于成功破裂至关重要.
- 储异质性,以SDC和屏障特性为特征,在决定骨折行为和治疗结果方面发挥着关键作用.
相关概念视频
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