高矿化度矿井水深层回注储层空间扰动特征研究

IF 2.7 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Optical Fiber Technology Pub Date : 2025-09-20 DOI:10.1016/j.yofte.2025.104399

Yali Peng , Shiang Xu , Pingsong Zhang , Jiankun Xue , Haibo Wu , Yucan Xiong

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引用次数: 0

摘要

研究了深部高矿化度矿井水回注储层的空间扰动和扩散路径。以玉神府某煤矿为例，构建了240 cm × 180 cm × 150 cm的三维物理模型，并与分布式光纤传感系统集成。利用光学频域反射技术（OFDR）实现了储层变形的高精度监测。同时，在COMSOL Multiphysics中建立数值模型，分析回注过程中矿井水扩散与储层力学的耦合关系，并与物理实验进行对比。结果表明，物理模型与数值模拟具有较好的一致性。OFDR技术有效捕获了回注引起的空间扰动，纤维应变曲线描绘了水运移的程度和途径。回注过程分为孔隙/裂缝填充、水力通道扩张和封存压力扰动三个阶段。OFDR应变监测具有优异的空间分辨率和测量精度，非常适合物理建模应用。综上所述，该方法为评价深井回注系统的封存性能和优化回注工艺提供了有效手段。

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Study on spatial disturbance characteristics in deep reinjection reservoirs for high-salinity mine water

This study investigates the spatial disturbance and diffusion pathways of deep reinjection reservoirs for high-salinity mine water. Taking a coal mine in Yushenfu as a case study, a 3D physical model (240 cm × 180 cm × 150 cm) was constructed and integrated with a distributed optical fiber sensing system. Optical Frequency Domain Reflectometry (OFDR) technology was employed to achieve high-precise monitoring of reservoir deformation. Concurrently, a numerical model was established in COMSOL Multiphysics to analyze the coupling between mine water diffusion and reservoir mechanics during reinjection, allowing comparison with the physical experiment. The results indicate that the physical model and numerical simulation have a good consistency. The OFDR technology effectively captured spatial disturbance caused by reinjection, with fiber strain curves delineating the extent and pathways of water migration. The reinjection process follows three stages: pore/fracture filling, hydraulic channel expansion, and sequestration pressure disturbance. OFDR strain monitoring exhibits excellent spatial resolution and measurement accuracy, making it highly suitable for physical modeling applications. Overall, this approach provides an effective means for evaluating the sequestration performance and optimizing the reinjection process in deep mine water reinjection systems.

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来源期刊

Optical Fiber Technology 工程技术-电信学

CiteScore

4.80

自引率

11.10%

发文量

327

审稿时长

63 days

期刊介绍： Innovations in optical fiber technology are revolutionizing world communications. Newly developed fiber amplifiers allow for direct transmission of high-speed signals over transcontinental distances without the need for electronic regeneration. Optical fibers find new applications in data processing. The impact of fiber materials, devices, and systems on communications in the coming decades will create an abundance of primary literature and the need for up-to-date reviews. Optical Fiber Technology: Materials, Devices, and Systems is a new cutting-edge journal designed to fill a need in this rapidly evolving field for speedy publication of regular length papers. Both theoretical and experimental papers on fiber materials, devices, and system performance evaluation and measurements are eligible, with emphasis on practical applications.