Physics – Geophysics
Scientific paper
Aug 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3515302c&link_type=abstract
Geophysical Research Letters, Volume 35, Issue 15, CiteID L15302
Physics
Geophysics
4
Marine Geology And Geophysics: Gas And Hydrate Systems, Physical Properties Of Rocks: Fracture And Flow, Geographic Location: Indian Ocean
Scientific paper
High-angle gas hydrate filled fracture planes were identified along a 31 m interval in logging while drilling images in two holes located ~11 m apart drilled during the Indian National Gas Hydrate Program Expedition 01, offshore India. Using Monte Carlo simulations to account for uncertainty in hole location, hole deviation, strike and dip, we assert with 95% confidence that the fracture planes in the two holes are not the same. The gas hydrate filled fracture planes likely only extend a few meters laterally from each borehole and occur in an isolated interval in the middle of the gas hydrate stability zone. This suggests gas generated microbially within in the gas hydrate stability zone may have supplied the gas hydrate-filled fracture interval. Production of methane from these reservoirs using conventional methods may be quite challenging.
Cook Ann E.
Goldberg David
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