天然气水合物沉积物颗粒影响实验

doi:10.12028/j.issn.2095-4239.2017.0093

储能科学与技术 ›› 2017, Vol. 6 ›› Issue (4): 789-798.doi: 10.12028/j.issn.2095-4239.2017.0093

天然气水合物沉积物颗粒影响实验

刘艳军，董孟阳，江磊磊，李文，黄志强

西南石油大学机电工程学院，四川成都 610500

收稿日期:2017-05-30 修回日期:2017-06-10 出版日期:2017-07-01 发布日期:2017-07-01
通讯作者: 刘艳军（1979—），男，博士，从事水合物合成实验和物性参数测量研究。E-mail：dongmengyang92@163.com。
基金资助:
国家重点研发计划子课题（2016YFC0304008）项目

An experiment investigation into the effect of particle properties on natural gas hydrate sediments#br#

LIU Yanjun, DONG Mengyang, JIANG Leilei, LI Wen, HUANG Zhiqiang

School of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, Sichuan, China

Received:2017-05-30 Revised:2017-06-10 Online:2017-07-01 Published:2017-07-01

摘要/Abstract

摘要： 通过利用SHW-III型水合物岩样声电力学测试装置，以石英砂和棕刚玉作为赋存介质，开展了60%、80%孔隙饱和度下不同颗粒对天然气水合物沉积物基础物性（声波波速、动态力学参数、胶结强度）影响的实验研究。得到纵波波速范围3542.6～4383.7 m/s，横波波速范围2163.9～2572.1 m/s，动态力学参数杨氏模量范围21.995～40.731 GPa，泊松比范围0.156～0.237等实验数据。当前实验条件下研究结果表明：不同颗粒类型、不同颗粒粒径作为天然气水合物沉积物骨架，最终形成的水合物沉积物电阻值相差不大；同一种颗粒粒径下的沉积物孔隙饱和度越高，声波传播速度越快，而相同类型的沉积物声波传播速度随其颗粒粒径的减小而增加；得到适用于60%、80%孔隙饱和度下一定颗粒粒径范围（0.42～1.8 mm）的以石英砂作为赋存介质时合成的天然气水合物沉积物声波波速拟合公式。通过压缩实验发现：天然气水合物沉积物的抗胶结程度随着沉积物颗粒粒径的减小而增强，随着孔隙饱和度的减小而下降。

关键词: 天然气水合物沉积物, 孔隙饱和度, 声波波速, 动态力学参数

Abstract: This paper concerns the fundamental properties of quartz sand and brown alumina particles as natural gas hydrate media by using a laboratory gas hydrate and sediment instrument, SHW-III. We measured the electrical resistance, sound propagation speed, compressibility under two pore saturation conditions of 60% and 80%. The results showed little effects of the types of particles on the natural gas hydrate sediment resistance. Given particle size, the higher the porosity of the sediment, the faster the velocity of sound propagation; the velocity of sound propagation, however, increased with increasing particle size for the same type of sediment. In addition, cementation resistance of the gas hydrate deposits increased gradually with decreasing size of the sediment particles or increasing pore saturation. An empirical relationship was obtained through data fitting for the sound propagation of gas hydrate sediments as a function of particle size over a range of 0.42～1.8 mm for 60% and 80% pore saturations.

Key words: natural gas hydrate sediments, pore saturation, acoustic wave velocity, the dynamic mechanical parameters

刘艳军，董孟阳，江磊磊，李文，黄志强. 天然气水合物沉积物颗粒影响实验[J]. 储能科学与技术, 2017, 6(4): 789-798.

LIU Yanjun, DONG Mengyang, JIANG Leilei, LI Wen, HUANG Zhiqiang. An experiment investigation into the effect of particle properties on natural gas hydrate sediments#br#[J]. Energy Storage Science and Technology, 2017, 6(4): 789-798.

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天然气水合物沉积物颗粒影响实验

An experiment investigation into the effect of particle properties on natural gas hydrate sediments#br#

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