对于不和岩石在钻探过程中具有限制压力的脆性-柔性过渡的声学发射特征
Mingchen Ding1, Mingming He1, Yangping Yao2
1State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi'an University of Technology, 710048, China.
Ultrasonics
|February 18, 2026
概括
这项研究使用声辐射监测来分析钻探期间的岩石断裂. 增加水和和限制压力会影响脆性-柔性过渡,影响复杂地质构造中的钻井效率.
科学领域:
- 地质工程是地质工程.
- 岩石力学 岩石力学 岩石力学
- 钻井技术 钻井技术
背景情况:
- 在复杂的地质环境中,钻井效率至关重要.
- 传统的钻井监测方法无法捕获释放的能量.
- 声波排放 (AE) 监控为实时分析提供了解决方案.
研究的目的:
- 通过分析含水岩石的脆性-柔性过渡机制来提高钻井效率.
- 为了更好地分析,将声辐射参数与钻井参数整合起来.
- 了解限制压力和水和对岩石断裂模式的影响.
主要方法:
- 在不同限制压力 (四级) 和和水平 (三级) 下,在红色砂岩上进行钻探实验.
- 利用声波排放监控技术来分析能量释放和故障事件.
- 与钻井参数相关的声辐射参数,以研究脆性-柔性过渡.
主要成果:
- 在摩擦阶段发生的脆性故障事件比切割阶段更多.
- 限制压力和和的增加通常会减少脆性故障事件的数量.
- 20MPa或100%和的限制压力导致脆性故障事件的增加,这表明了复杂的相互作用.
- 由于水引起的岩石退化,较高的和度延迟了脆性-柔性过渡.
- 对于脆性-柔性过渡的钻探关键深度随着和度的上升而增加.
结论:
- 水的和和限制压力在钻井过程中显著影响脆柔的过渡机制.
- 水引起的岩石退化可能会延迟脆性-柔性过渡,影响钻探性能.
- 这些发现为优化在富含水分,应力形成的钻井作业提供了指导.
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