Journal
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
Volume 35, Issue -, Pages 920-927Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jngse.2016.09.037
Keywords
Methane-hydrate; Gravel pack; Aspect ratio; Discre-element method; Computational fluid dynamics; Multiobjective optimization
Categories
Funding
- Ministry of Economy, Trade and Industry in Japan
- MH21 Research Consortium
Ask authors/readers for more resources
In gas production from methane-hydrate (MH) reservoirs, consolidation induces invasion of the reservoir, and the gravel pack may be replaced by the invading sand. Therefore, the gravel pack of an MH reservoir must have a high shear strength and a higher permeability than the reservoir. In this study, we investigated the shear strength and permeability of different particles, with the gravel aspect ratio as the design variable. Particles with aspect ratios of 1,1.5, 2, and 2.5 were packed under isotropic compression using discrete-element method (DEM) simulations. Particles with an aspect ratio of 1.5 exhibited the lowest void ratio. Shear strength was measured using triaxial compression DEM simulations, with the 2.5 aspect ratio particles exhibiting the highest value. Permeability was evaluated using pore scale computational fluid dynamics (CFD) simulation of the particle pack generated by the DEM. Particles with an aspect ratio of 2.5 exhibited the highest permeability. The performance of the four types of particles was compared using multiobjective optimization, with shear strength and permeability as the objective functions. Particles with an aspect ratio of 2.5 exhibited the highest performance against both objective functions. (C) 2016 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available