TY - JOUR
T1 - Maximum Recoverable Gas from Hydrate Bearing Sediments by Depressurization
AU - Terzariol, Marco
AU - Goldsztein, G.
AU - Santamarina, Carlos
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: Support for this research was provided by the USA Department of Energy, with additional funding by the KAUST endowment. G. E Abelskamp edited this manuscript.
PY - 2017/11/13
Y1 - 2017/11/13
N2 - 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.
AB - 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.
UR - http://hdl.handle.net/10754/626158
UR - http://www.sciencedirect.com/science/article/pii/S0360544217319345
UR - http://www.scopus.com/inward/record.url?scp=85034841788&partnerID=8YFLogxK
U2 - 10.1016/j.energy.2017.11.076
DO - 10.1016/j.energy.2017.11.076
M3 - Article
AN - SCOPUS:85034841788
VL - 141
SP - 1622
EP - 1628
JO - Energy
JF - Energy
SN - 0360-5442
ER -