多孔介质中天然气水合物注热+降压开采的实验研究

被引:12
作者
李淑霞
陈月明
张卫卫
夏晞冉
机构
[1] 中国石油大学(华东)石油工程学院
基金
中央高校基本科研业务费专项资金资助;
关键词
天然气水合物; 注热; 降压; 实验;
D O I
暂无
中图分类号
P744.4 [石油和天然气];
学科分类号
0824 ;
摘要
为研究注热与降压相结合的开采方式是否更加有利于天然气水合物的开采,在自制的天然气水合物开采模拟实验系统上进行了实验研究。在一维填砂模型中人工生成天然气水合物之后,进行先注热盐水然后再降低压力(注热+降压)的开采模拟实验,分析了开采过程中系统温度、电阻率变化规律以及产气量、能量效率等。结果表明:产气规律具有明显的阶段性,各测点的温度、电阻率变化能够很好地反应水合物分解的动态变化过程。通过对不同开采方式下能量效率的对比分析可以看出:单纯注热盐水时能量效率仅为1.80,但将注热盐水与降压相结合时,能量效率可增大到2.88,这说明注热与降压相结合的开采方式可获得更大的能量效率,更有利于水合物的开采。
引用
收藏
页码:202 / 208
页数:7
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李淑霞 ;
陈月明 ;
王瑞和 ;
李清平 .
实验力学, 2009, 24 (04) :313-319