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Triaxial Compressive Property of Artificial CO2-Hydrate Sand

DOI

28

Citations

0

References

2016

Year

Kuniyuki Miyazaki, Yasuki Oikawa, Hironori Haneda, Tsutomu Yamaguchi
International Journal of Offshore and Polar Engineering

Abstract

Carbon dioxide (CO2) injection into marine sediments is considered to be a supplementary method for enhancing methane (CH4) recovery from CH4-hydrate reservoirs. It is essential to consider the geomechanical characteristics of CO2-hydrate sediments to ensure sustainable CH4-hydrate production using CO2 injection. Experimental methods involving drained triaxial compression tests on artificial CO2-hydrate sand specimens were developed. The mechanical property of CO2-hydrate sand specimens was compared with that of CH4-hydrate sand specimens. The difference in the mechanical property of CO2hydrate and CH4-hydrate sand specimens was thought to be due to crystal growth and/or cavity occupancy in load-bearing hydrate.
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