Abstract
Conventional valuation methods of volumetric versus well performance and size-based distribution analogs are not available for NGH yet, and may not be directly applicable because NGH does not saturate its reservoir as evenly as pressurized free gas. Exploration for NGH concentrations will follow a process similar to that of conventional gas deposits, beginning with general characteristics and focusing on individual prospects. In the first phase, basin analysis is used to show the likelihood of the potential for NGH. The second phase uses remote characterization methods (primarily seismic) to narrow the search and actively identify potential NGH concentrations. The third phase uses both remote and direct (drilling) methods to characterize the economic nature of the concentration(s), including volumetric calculations similar to those made for other mineral deposits. Substantial information gathered from conventional hydrocarbon exploration can be used for NGH exploration, particularly with respect to the identification of a gas province within which NGH concentrations would be anticipated.
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Max, M.D., Johnson, A.H., Dillon, W.P. (2013). Gas Production from NGH: We Have All the Basic Tools. In: Natural Gas Hydrate - Arctic Ocean Deepwater Resource Potential. SpringerBriefs in Energy. Springer, Cham. https://doi.org/10.1007/978-3-319-02508-7_7
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