沉积物中四氢呋喃水合物生成/解离过程的电阻率演变实验研究
Experimental Study on the Evolution of Resistivity in the Formation/Dissociation Process of Tetrahydrofuran Hydrate in Sediments
投稿时间:2020-06-23  修订日期:2020-09-18
DOI:
中文关键词:  四氢呋喃水合物  生成与分解  沉积物  电阻率  水合物饱和度  模型实验
英文关键词:Tetrahydrofuran hydrate  formation and decomposition  sediment  resistivity  hydrate saturation  model experiment
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目),国家科技攻关计划
作者单位E-mail
马淑芝 中国地质大学(武汉)工程学院 maszyy@163.com 
李鸿博 中国地质大学(武汉)工程学院  
孟航 中国地质大学(武汉)工程学院  
张致能 中国地质大学(武汉)工程学院  
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中文摘要:
      海底沉积物中水合物的生成和分解会造成沉积物电阻率的变化,研究沉积物中水合物生成和分解过程电阻率的变化特征,对天然气水合物勘探和安全高效的开采具有重要的意义。本文利用自制的试验装置,利用四氢呋喃水溶液,模拟天然气水合物,通过预埋在沉积物中的电阻率测试元件,测量了水合物形成与分解过程中模拟沉积物中的电阻率,据此分析了沉积物中水合物成核、形成与分解过程中各个阶段电阻率的变化规律,并研究了不同四氢呋喃和水配比对水合物生成与分解过程中的阶段特征数据的影响规律。本文揭示的电阻率演变特征对于天然气水合物开采过程的监测具有一定指导意义。
英文摘要:
      The formation and decomposition of hydrates in submarine sediments will cause changes in the electricalresistivity of sediments. It is thus of significance to investigate the evolution characteristics of the changes in electricalresistivity during the formation and decomposition of hydrates in sediments, for the exploration and safe and efficient extraction of natural gas hydrates. This paper designed a lab-scale experimental apparatus using tetrahydrofuran aqueous solution to simulate natural gas hydrateto measure the transient electrical resistivity during gas hydrate formation/decomposition. The evolution of resistivity on various stages during the nucleation, formation and decomposition of hydrate in sediments was analyzed, and the influence of different tetrahydrofuran and water ratio on the characteristic data of different stages during the process of hydrate formation and decomposition was studied. The characteristics of resistivity evolution revealed in this paper will help monitor the existence status of natural gas hydrate during exploitation process.
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