基于光纤感测技术的水合物储层动态温度、应力监测探头研发

陈明涛, 李彦龙, 赵强, 张亚娟, 范好好, 王振豪, 吴能友. 基于光纤感测技术的水合物储层动态温度、应力监测探头研发[J]. 海洋地质与第四纪地质, 2025, 45(3): 166-180. doi: 10.16562/j.cnki.0256-1492.2023112001
引用本文: 陈明涛, 李彦龙, 赵强, 张亚娟, 范好好, 王振豪, 吴能友. 基于光纤感测技术的水合物储层动态温度、应力监测探头研发[J]. 海洋地质与第四纪地质, 2025, 45(3): 166-180. doi: 10.16562/j.cnki.0256-1492.2023112001
CHEN Mingtao, LI Yanlong, ZHAO Qiang, ZHANG Yajuan, FAN Haohao, WANG Zhenhao, WU Nengyou. Research and development of a dynamic temperature and stress monitoring probe for hydrate reservoirs based on fiber optic sensing technology[J]. Marine Geology & Quaternary Geology, 2025, 45(3): 166-180. doi: 10.16562/j.cnki.0256-1492.2023112001
Citation: CHEN Mingtao, LI Yanlong, ZHAO Qiang, ZHANG Yajuan, FAN Haohao, WANG Zhenhao, WU Nengyou. Research and development of a dynamic temperature and stress monitoring probe for hydrate reservoirs based on fiber optic sensing technology[J]. Marine Geology & Quaternary Geology, 2025, 45(3): 166-180. doi: 10.16562/j.cnki.0256-1492.2023112001

基于光纤感测技术的水合物储层动态温度、应力监测探头研发

  • 基金项目: 国家自然科学基金 “南海天然气水合物降压开采储层人工裂缝失效机理与增渗修复方法” (U2444215);江苏省研究生科研创新项目 “水力割缝对南海神狐海域含水合物沉积物变形的影响” (KYCX22_0584)
详细信息
    作者简介: 陈明涛(1994—),男,博士研究生,主要从事天然气水合物开采理论与技术研究,E-mail:ChenMt2022@hhu.edu.cn
    通讯作者: 李彦龙(1989—),男,博士,研究员,主要从事天然气水合物开采理论与技术研究,E-mail:ylli@qnlm.ac
  • 中图分类号: P754.1;P736

Research and development of a dynamic temperature and stress monitoring probe for hydrate reservoirs based on fiber optic sensing technology

More Information
  • 水合物生成与分解以及加载变形下含水合物沉积物内部的温度、应力变化规律对破解水合物储层失稳破坏的演化机制至关重要。为了监测含水合物沉积物内部温度、应力在水合物生成、分解、变形等全过程中的演化机制,本文提出一种基于光纤传感技术的含水合物沉积物温度、应力监测方案,并研制了集温度、应力监测于一体的光纤探头,实现了从沉积物装样到水合物合成到加载变形,再到水合物分解过程中试样温度和应力的监测。与常规热电阻温度传感器和加载压力传感器监测数据初步对比表明,二者具有一致的变化趋势。但在数值上存在一定差异,分析认为是储层的非均质性、应力加载端与光纤感测端的距离变化共同导致。整体而言,光纤感测探头可以较好地捕捉因水合物合成产生的挤压应力升高与水合物分解过程中含水合物沉积物水平应力的降低。

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  • 图 1  光纤光栅传感原理示意图

    Figure 1. 

    图 2  测试系统示意图

    Figure 2. 

    图 3  光纤温度、压力监测探头结构示意图

    Figure 3. 

    图 4  反应釜内各测试探头布局示意(a)及实物照片(b)

    Figure 4. 

    图 5  测试流程图

    Figure 5. 

    图 6  光纤温度、应力标定曲线

    Figure 6. 

    图 7  含水细砂沉积物加载过程中的温度(a)和应力(b)变化曲线

    Figure 7. 

    图 8  含水细砂沉积物装样压实过程中的温度(a)和应力(b)监测曲线

    Figure 8. 

    图 9  含水合物细砂沉积物在水合物合成阶段温度(a)和应力(b)监测曲线

    Figure 9. 

    图 10  加载过程中的含水合物细砂沉积物温度(a)和应力(b)监测曲线

    Figure 10. 

    图 11  卸载下监测的含水合物细砂沉积物的温度(a)和应力(b)变化曲线

    Figure 11. 

    图 12  含水合物细砂沉积物在水合物分解时储层内部温度(a)和压力(b)变化曲线

    Figure 12. 

    图 13  前人光纤监测与热电阻监测对比图

    Figure 13. 

    图 14  不同变形阶段下含水合物沉积物的变形机制与光纤探头受力变化机制示意图

    Figure 14. 

    图 15  光纤光栅监测技术用于海底水合物储层原位监测示意图

    Figure 15. 

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出版历程
收稿日期:  2023-11-20
修回日期:  2024-07-04
刊出日期:  2025-06-28

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