Email RIS file
Bookmark
Report an Issue

MORPHOLOGY OF METHANE HYDRATE HOST SEDIMENTS [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy. Office of Science, 2004.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
5 pages : digital, PDF file
Additional Creators
Brookhaven National Laboratory, United States. Department of Energy. Office of Science, and United States. Department of Energy. Office of Scientific and Technical Information
Access Online

Availability

I Want It
I Want It

Finding items...

Restrictions on Access
Free-to-read Unrestricted online access
Summary
Results from simulated experiments in several laboratories show that host sediments influence hydrate formation in accord with known heterogeneity of host sediments at sites of gas hydrate occurrence (1). For example, in Mackenzie Delta, NWT Canada (Mallik 2L-38 well), coarser-grained units (pore-filling model) are found whereas in the Gulf of Mexico, the found hydrate samples do not appear to be lithologically controlled. We have initiated a systematic study of sediments, initially focusing on samples from various depths at a specific site, to establish a correlation with hydrate occurrence (or variations thereof) to establish differences in their microstructure, porosity, and other associated properties. The synchrotron computed microtomography (CMT) set-up at the X-27A tomography beam line at the National Synchrotron Light Source (NSLS), Brookhaven National Laboratory was used as a tool to study sediments from Blake Ridge at three sub bottom depths of 0.2, 50, and 667 meters. Results from the tomographic analysis of the deepest sample (667 m) are presented here to illustrate how tomography can be used to obtain new insights into the structures of methane hydrate host sediments. The investigation shows the internal grain/pore space resolution in the microstructure and a 3-D visualization of the connecting pathways obtained following data segmentation into pore space and grains within the sediment sample. The analysis gives the sample porosity, specific surface area, mean particle size, and tortuosity, as well. An earlier report on the experimental program has been given by Mahajan et al. (2).
Report Numbers
E 1.99:bnl--73670-2005-cp
bnl--73670-2005-cp
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
12/01/2004.
"bnl--73670-2005-cp"
"KC0303010"
229TH AMERICAN CHEMICAL SOCIETY NATIONAL MEETING, SYMPOSIUM ON GAS HYDRATES AN CLATHRATES, SAN DIEGO, CA (US), 03/13/2005--03/17/2005.
JONES,K.W.; WINTER,W.J.; EATON,M.; MAHAJAN,D.; FENG,H.; TOMOV,S.
Funding Information
AC02-98CH10886
EE-333-EEDA
View MARC record | catkey: 14686963