孙建业,业渝光,刘昌岭,赵广涛,刁少波,孟庆国

• 1:中国海洋大学海洋地球科学学院
• 2:青岛海洋地质研究所
• 3:青岛大学化学化工与环境学院

摘要(Abstract)：

基于自行研发的天然气水合物模拟开采实验装置,进行了电加热法和减压法2种开采技术的实验研究。实验材料采用粒径为0.18~0.25 mm的自然砂,0.03%的十二烷基硫酸钠(SDS)水溶液和高纯甲烷,每次实验都分为水合物合成和开采两个阶段。实验结果表明:水合物首先在沉积物体系上层与外侧生成,然后在体系内部逐渐生成。在电加热法开采过程中,可分为初始分解、沉积物体系升温、大量分解3个阶段,加热点的位置、热量传递方向和速率决定着沉积物中水合物的分解位置和速率,该方法能量利用率较低。在减压法开采过程中,水合物分解速度先快后慢,设置的分解压力越低,分解速度越快。

关键词(KeyWords)： 天然气水合物;电加热开采;减压开采;模拟实验;沉积物

Abstract:

Keywords:

基金项目(Foundation): 国家“118”专项项目(GZH200200202)资助

作者(Author): 孙建业,业渝光,刘昌岭,赵广涛,刁少波,孟庆国

DOI: 10.16441/j.cnki.hdxb.2009.06.026

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