用水力压裂法获取煤储层地应力参数

详细信息

Acquiring coal reservoir stress parameter by hydraulic fracturing method

摘要: 地应力可反映煤储层的应力状况,它是认识和评价煤储层的重要参数之一。从水力压裂法获取煤储层地应力的原理和方法入手,通过对3组典型实测数据的分析,着重探讨了用时间平方根法和双对数曲线法在分析地应力时如何准确识别闭合压力和提高地应力测试精度,对煤层气工作者具有很好的借鉴价值。
- 水力压裂法 /
- 煤储层 /
- 地应力 /
- 时间平方根法 /
- 双对数曲线法
Abstract: In-situ stress is one of important factors used to evaluate the coal reservoir.The fundamental principle of hydraulic fracturing method for measuring in-situ stress is briefly introduced in this paper.Based on three sets of typical in-situ stress data from well site, it focuses on how to acquire the closure pressure of coal reservoir by using time square root and bilogarithmic methods. The study results would be useful for coalbed gas reseachers.
- hydraulic fracturing method /
- coal reservoir /
- stress /
- time square root method /
- bilogarithmic method