Maximum Recoverable Gas from Hydrate Bearing Sediments by Depressurization

Marco Terzariol, G. Goldsztein, Carlos Santamarina

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

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 languageEnglish (US)
Pages (from-to)1622-1628
Number of pages7
JournalEnergy
Volume141
DOIs
StatePublished - Nov 13 2017

Fingerprint Dive into the research topics of 'Maximum Recoverable Gas from Hydrate Bearing Sediments by Depressurization'. Together they form a unique fingerprint.

Cite this