Abstract
The estimation of gas production rates from hydrate bearing sediments requires complex numerical simulations. This manuscript presents a set of simple and robust analytical solutions to estimate the maximum depressurization-driven recoverable gas. These limiting-equilibrium solutions are established when the dissociation front reaches steady state conditions and ceases to expand further. Analytical solutions show the relevance of (1) relative permeabilities between the hydrate free sediment, the hydrate bearing sediment, and the aquitard layers, and (2) the extent of depressurization in terms of the fluid pressures at the well, at the phase boundary, and in the far field. Close form solutions for the size of the produced zone allow for expeditious financial analyses; results highlight the need for innovative production strategies in order to make hydrate accumulations an economically-viable energy resource. Horizontal directional drilling and multi-wellpoint seafloor dewatering installations may lead to advantageous production strategies in shallow seafloor reservoirs.
Original language | English (US) |
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Pages (from-to) | 1622-1628 |
Number of pages | 7 |
Journal | Energy |
Volume | 141 |
DOIs | |
State | Published - Dec 15 2017 |
Bibliographical note
Publisher Copyright:© 2017 Elsevier Ltd
Keywords
- Energy
- Gas production
- Hydrates
- Methane
- Sediments
- Simulators
ASJC Scopus subject areas
- Mechanical Engineering
- General Energy
- Pollution
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering
- Management, Monitoring, Policy and Law
- Industrial and Manufacturing Engineering
- Building and Construction
- Fuel Technology
- Renewable Energy, Sustainability and the Environment
- Civil and Structural Engineering
- Modeling and Simulation