Productivity and feasibility analysis of gas production from subsea sediment bearing with natural gas hydrate Online publication date: Wed, 17-Feb-2016
by Zhiwu Gong; Liang Zhang; Haiqing Cheng; Yanyong Wang; Di Qi; Shaoran Ren
International Journal of Oil, Gas and Coal Technology (IJOGCT), Vol. 11, No. 3, 2016
Abstract: A dynamics-model of natural gas hydrate (NGH) dissociation was established based on experimental results, which can be used for numerical simulation studies of gas production from subsea sediment bearing with hydrate. Three phases (aqueous, hydrate-solid and gaseous) and three components (water, methane hydrate and methane) were considered in the reservoir simulation model of gas hydrate. Comparisons between the numerical simulation and the experimental results were made to verify the simulation model. The reservoir model was then used to analyse the productivity of typical wells for gas production from hydrate via depressurisation, which was compared with that of conventional gas, tight gas and coalbed methane reservoirs to reveal the main features and feasibility of subsea NGH development. The simulation results indicated that, at similar reservoir scales, NGH reservoirs with hydrate saturation greater than 0.3 can have higher gas productivity than typical tight gas and coalbed methane reservoirs. That means gas production from NGH in subsea sediment can be feasible using the current technologies if reservoirs or formations with high hydrate saturation can be found, while its economics may be of further consideration. [Received: November 26, 2014; Accepted: April 15, 2015]
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Oil, Gas and Coal Technology (IJOGCT):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email subs@inderscience.com