Resource Characterization and Quantification of
Natural
Gas
-Hydrate and Associated Free-
Gas
Accumulations in the Prudhoe Bay—Kuparuk
River Area on the North Slope of Alaska
By
R.B. Hunter, G.J. Pelka, S.A. Digert (BP Exploration (Alaska) Inc.), R. Casavant, R. Johnson, M. Poulton, C. Glass (University of Arizona), K. Mallon (Consultant), S.L. Patil, G.A. Chukwu, A.Y. Dandekar, S. Khataniar, D.O. Ogbe (University of Alaska, Fairbanks), and T.S. Collett (U.S. Geological Survey)
BP is leading a
collaborative, DOE-cooperatively-funded project to characterize, quantify, and
determine commerciality of Alaska North Slope (ANS)
gas
-hydrate and associated
free-
gas
resources in Prudhoe Bay Unit—Kuparuk River Unit—Milne Point Unit
areas. BP will collaborate with the University of Arizona, Tucson, University of
Alaska, Fairbanks, and United States Geological Survey to provide practical
input to reservoir and economic models, to determine the technical feasibility
of
gas
hydrate production, and to influence future exploration and field
extension of this ANS resource. The large magnitude of potential
gas
reserves
(44 TCF) and concurrent ANS
gas
commercialization industry studies make this an
opportune time to assess this resource. This region exclusively combines known
gas
hydrate resource presence and existing production infrastructure. Many
technical, economical, environmental, and safety issues require resolution
before enabling
gas
hydrate commercial production.
Gas
hydrate energy resource
potential has been studied for nearly three decades. However, operators have not
applied this knowledge to practical
gas
hydrate resource development. ANS
gas
hydrate reservoirs have not been studied to determine reservoir extent,
stratigraphy, structure, continuity, quality, variability, and geophysical and
petrophysical property distribution. A first, two-year phase will characterize
the reservoirs and lead to recoverable reserve and commercial potential
estimates. This phase will also define procedures for
gas
hydrates
drilling,
data acquisition, completion, and production. Phases 2 and 3 will integrate
well, core, log, and long-term production test data from additional wells, if
justified by results from prior phases. The project could lead to future ANS
gas
hydrate pilot development.
AAPG Search and Discovery Article #90008©2002 AAPG Pacific Section/SPE Western Region Joint Conference of Geoscientists and Petroleum Engineers, Anchorage, Alaska, May 18–23, 2002.