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Title: Key aspects of numerical analysis of gas hydrate reservoir performance: Alaska North Slope Prudhoe Bay Unit “L-Pad” hydrate accumulation

In previous work, we reported the development of the 3D geostatistical hydrate reservoir model of "L-Pad" (Myshakin et al., 2016). Here, 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 × 10 8–3.5 × 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. Lastly, sequential depressurization of hydrate-bearing units was found to be more attractive versus simultaneous depressurization.
Authors:
ORCiD logo [1] ;  [1] ;  [2] ;  [2] ;  [3]
  1. National Energy Technology Lab. (NETL), Morgantown, WV (United States); West Virginia Univ., Morgantown, WV (United States)
  2. National Energy Technology Lab. (NETL), Morgantown, WV (United States)
  3. National Energy Technology Lab. (NETL), Morgantown, WV (United States); AECOM, Pittsburgh, PA (United States)
Publication Date:
Grant/Contract Number:
FE0004000
Type:
Accepted Manuscript
Journal Name:
Journal of Natural Gas Science and Engineering
Additional Journal Information:
Journal Volume: 51; Journal Issue: C; Journal ID: ISSN 1875-5100
Publisher:
Elsevier
Research Org:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
03 NATURAL GAS; Gas hydrates; Numerical simulations; Alaska North Slope hydrates; Relative permeability; Grain thermal conductivity; Hydrate reservoirs with aquifer
OSTI Identifier:
1482374

Ajayi, Taiwo, Anderson, Brian J., Seol, Yongkoo, Boswell, Ray, and Myshakin, Evgeniy M.. Key aspects of numerical analysis of gas hydrate reservoir performance: Alaska North Slope Prudhoe Bay Unit “L-Pad” hydrate accumulation. United States: N. p., Web. doi:10.1016/j.jngse.2017.12.026.
Ajayi, Taiwo, Anderson, Brian J., Seol, Yongkoo, Boswell, Ray, & Myshakin, Evgeniy M.. Key aspects of numerical analysis of gas hydrate reservoir performance: Alaska North Slope Prudhoe Bay Unit “L-Pad” hydrate accumulation. United States. doi:10.1016/j.jngse.2017.12.026.
Ajayi, Taiwo, Anderson, Brian J., Seol, Yongkoo, Boswell, Ray, and Myshakin, Evgeniy M.. 2018. "Key aspects of numerical analysis of gas hydrate reservoir performance: Alaska North Slope Prudhoe Bay Unit “L-Pad” hydrate accumulation". United States. doi:10.1016/j.jngse.2017.12.026. https://www.osti.gov/servlets/purl/1482374.
@article{osti_1482374,
title = {Key aspects of numerical analysis of gas hydrate reservoir performance: Alaska North Slope Prudhoe Bay Unit “L-Pad” hydrate accumulation},
author = {Ajayi, Taiwo and Anderson, Brian J. and Seol, Yongkoo and Boswell, Ray and Myshakin, Evgeniy M.},
abstractNote = {In previous work, we reported the development of the 3D geostatistical hydrate reservoir model of "L-Pad" (Myshakin et al., 2016). Here, 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 × 108–3.5 × 108 ST m3 of gas produced over 10 years. Accounting for reservoir quality and irreducible water saturation leads to noticeable change in productivity. Lastly, sequential depressurization of hydrate-bearing units was found to be more attractive versus simultaneous depressurization.},
doi = {10.1016/j.jngse.2017.12.026},
journal = {Journal of Natural Gas Science and Engineering},
number = C,
volume = 51,
place = {United States},
year = {2018},
month = {1}
}