Mechanical property of artificial methane hydrate under triaxial compression

作     者：Yongchen Song Feng Yu Yanghui Li Weiguo Liu Jiafei Zhao 

作者机构：Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education Dalian University of Technology Dalian 116024 Liaoning China 

出 版 物：《Journal of Natural Gas Chemistry》 (天然气化学杂志（英文版）)

年 卷 期：2010年第19卷第3期

页      面：246-250页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 0817[工学-化学工程与技术] 080104[工学-工程力学] 0807[工学-动力工程及工程热物理] 0824[工学-船舶与海洋工程] 0703[理学-化学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by the National Science and Technology Major Project, China (Grant No. 2008ZX050 26-04-010) the National High Technology Research and Development Program of China (Grant No. 2006AA09A209-5) Key Program of National Natural Science Foundation of China(50736001) 

主　　题：triaxial mechanical properties confining pressure temperature strain rate 

摘      要：Methane production from hydrate reservoir may induce seabed slide and deformation of the hydrate-bearing strata.The research on mechanical properties of methane hydrate is considered to be important for developing an efficient methane exploitation technology.In this paper,a triaxial test system containing a pressure crystal device was developed with the conditions to stabilize the hydrate.A series of triaxial shear tests were carried out on artificial methane hydrate specimen.In addition,mechanical characteristics of methane hydrate were studied with the strain rates of 0.1 and 1.0 mm/min,respectively,under the conditions of different temperatures（T =-5,-10,and-20 ℃） and confining pressures（P = 0,5,10,15,and 20 MPa）.The preliminary results show that when the confining pressure was less than 10 MPa,the increase of confining pressure leaded to the enhancement of shear strength.Furthermore,the decreasing temperature and the increasing strain rate both caused the increase in shear strength.