Introduction to physical properties and elasticity models: Chapter 20

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Abstract

Estimating the in situ methane hydrate volume from seismic surveys requires knowledge of the rock physics relations between wave speeds and elastic moduli in hydrate/sediment mixtures. The elastic moduli of hydrate/sediment mixtures depend on the elastic properties of the individual sedimentary particles and the manner in which they are arranged. In this chapter, we present some rock physics data currently available from literature. The unreferenced values in Table I were not measured directly, but were derived from other values in Tables I and II using standard relationships between elastic properties for homogeneous, isotropic material. These derivations allow us to extend the list of physical property estimates, but at the expense of introducing uncertainties due to combining property values measured under different physical conditions. This is most apparent in the case of structure II (sII) hydrate for which very few physical properties have been measured under identical conditions.

Additional publication details

Publication type Book chapter
Publication Subtype Book Chapter
Title Introduction to physical properties and elasticity models: Chapter 20
DOI 10.1007/978-94-011-4387-5_20
Volume 5
Year Published 2003
Language English
Publisher Springer
Contributing office(s) Coastal and Marine Geology Program, Woods Hole Coastal and Marine Science Center
Description 16 p.
Larger Work Type Book
Larger Work Subtype Other Government Series
Larger Work Title Natural gas hydrate in oceanic and permafrost environments
First page 245
Last page 260