Numerical studies of depressurization-induced gas production from an interbedded marine turbidite gas hydrate reservoir model

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Abstract

The numerical simulation of thin hydrate-bearing sand layers interbedded with mud layers is investigated. In this model, the lowest hydrate layer occurs at the base of gas hydrate stability and overlies a thinly-interbedded saline aquifer. The predicted gas rates reach 6.25 MMscf/day (1.77 x 105 m3 /day) after 90 days of continuous depressurization with manageable water production. Development of horizontal dissociating interfaces between hydrate-bearing sand and mud layers is a primary determinant of reservoir performance. A set of simulations has been executed to assess uncertainty in in situ permeability and to determine the impact of the saline aquifer on productivity.

Additional publication details

Publication type Conference Paper
Publication Subtype Conference Paper
Title Numerical studies of depressurization-induced gas production from an interbedded marine turbidite gas hydrate reservoir model
Year Published 2017
Language English
Contributing office(s) Central Energy Resources Science Center
Description 18 p.
Larger Work Type Book
Larger Work Subtype Conference publication
Larger Work Title Proceeding of the 9th International Conference on Gas Hydrates
Conference Title 9th International Conference on Gas Hydrates
Conference Location Denver, CO
Conference Date June 25-30, 2017