| Summary: | There has been a dramatic increase in both the amount and type of geophysical well log data
acquired in gas hydrate saturated rocks. Data has been acquired in both offshore and Arctic
environments; its availability has shed light on the applicability of current tools and the potential
usefulness of recently developed and developing technologies.
Some of the more interesting areas of interest are related to the usefulness of nuclear elemental
spectroscopy data and the comparison of thermal and epithermal neutron porosity measurements,
the measurement of in-situ permeability, the interpretation of electrical borehole image and
borehole sonic data.
A key parameter for reservoir characterization and simulation is formation permeability. A
reasonable understanding of this property is key to the development of future gas hydrate
production.
Typical applications of borehole image data are an appreciation of a reservoir’s geological
environment. In hydrate saturated reservoirs, borehole images can also be used to assist in the
understanding of the gas migratory path to the hydrate bearing formation.
This paper presents a review of some of the current state of the art geophysical log measurements
and their application in hydrate saturated reservoirs..
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