Journal
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
Volume 51, Issue -, Pages 37-43Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jngse.2017.12.026
Keywords
Gas hydrates; Numerical simulations; Alaska North Slope hydrates; Relative permeability; Grain thermal conductivity; Hydrate reservoirs with aquifer
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Funding
- National Energy Technology Laboratory's ongoing research under the RES [DE-FE0004000]
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In previous work, we reported the development of the 3D geostatistical hydrate reservoir model of L-Pad (Myshakin et al., 2016). In this paper, gas production sensitivity on key reservoir parameters are studied. Hydraulic communication with an aquifer and optimal depressurization strategies are subjects of investigation. Uncertainty in initial in situ permeability within 0.1-10 mD range leads to 2.0 x 10(8)-3.5 x 10(8) ST m(3) of gas produced over 10 years. Accounting for reservoir quality and irreducible water saturation leads to noticeable change in productivity. Sequential depressurization of hydrate-bearing units was found to be more attractive versus simultaneous depressurization.
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