The University of Southampton
University of Southampton Institutional Repository

The microstructure of sediment-hosted hydrates: evidence from effective medium modelling of laboratory and borehole seismic data

Minshull, T.A. and Chand, S. (2009) The microstructure of sediment-hosted hydrates: evidence from effective medium modelling of laboratory and borehole seismic data In, Long, D., Lovell, M. A., Rees, J.G. and Rochelle, C.A. (eds.) Sediment-Hosted Gas Hydrates. London, UK, Geological Society of London pp. 93-101. (Geological Society of London Special Publication, 319).

Record type: Book Section


Much of our knowledge of hydrate distribution in the subsurface comes from
interpretations of remote seismic measurements. A key step in such interpretations is
an effective medium theory that relates the seismic properties of a given sediment to
its hydrate content. A variety of such theories have been developed; these theories
generally give similar results if the same assumptions are made about the extent to
which hydrate contributes to the load-bearing sediment frame. We have further
developed and modified one such theory, the self-consistent
approximation/differential effective medium approach, to incorporate additional
empirical parameters describing the extent to which both the sediment matrix material
(clay or quartz) and the hydrate are load-bearing. We find that a single choice of
these parameters allows us to match well both P and S wave velocity measurements
from both laboratory and in situ datasets, and that the inferred proportion of hydrate
that is load-bearing varies approximately linearly with hydrate saturation. This
proportion appears to decrease with increasing hydrate saturation for gas-rich
laboratory environments, but increase with hydrate saturation when hydrate is formed
from solution and for an in situ example.

PDF minshull&chand_revised.pdf - Accepted Manuscript
Download (312kB)

More information

Published date: 2009


Local EPrints ID: 66803
PURE UUID: 1edcedea-cdab-486d-81c5-b977e59a4196
ORCID for T.A. Minshull: ORCID iD

Catalogue record

Date deposited: 22 Jul 2009
Last modified: 19 Jul 2017 00:22

Export record


Author: T.A. Minshull ORCID iD
Author: S. Chand
Editor: D. Long
Editor: M. A. Lovell
Editor: J.G. Rees
Editor: C.A. Rochelle

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton:

ePrints Soton supports OAI 2.0 with a base URL of

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.