Abstract
The JAPEX/JNOC/GSC et al. Mallik 5L-38 gas hydrate production research well was an integral part of a field experiment to test the physical response of a gas hydrate deposit to various advanced production methods. As part of this effort, the Mallik 5L-38 well was the focus of an advanced, downhole, geophysical-logging program. Because gas hydrate is unstable at surface pressure and temperature conditions, a major emphasis was placed on the downhole-logging program to determine the in situ physical properties of the gas-hydrate-bearing sediments. This effort included the compilation of 'well-log montages' that display downhole log data obtained from the gas-hydrate-bearing sedimentary interval (891 - 1107 m) in the Mallik 5L-38 well. Also shown are numerous reservoir parameters, including gas hydrate saturation and sediment-porosity log traces calculated from available downhole well-log and core data.
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