Seismic-Scale Rock Physics of Methane Hydrate

Amos, N.

Technical Information Center Oak Ridge Tennessee

关键词: Methane hydrate;    Synthetic seismic traces;    Real seismic data;    In-situ reservoir conditions;    Rock physics equations;   

RP-ID  :  DE2009945215

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

We quantify natural methane hydrate reservoirs by generating synthetic seismic traces and comparing them to real seismic data: if the synthetic matches the observed data, then the reservoir properties and conditions used in synthetic modeling might be the same as the actual, in-situ reservoir conditions. This approach is model-based: it uses rock physics equations that link the porosity and mineralogy of the host sediment, pressure, and hydrate saturation, and the resulting elastic-wave velocity and density. One result of such seismic forward modeling is a catalogue of seismic reflections of methane hydrate which can serve as a field guide to hydrate identification from real seismic data. We verify this approach using field data from known hydrate deposits.