Influence of fracture orientation distribution function on the estimates of gas-hydrate saturation of site 10 at Krishna-Godavari Basin, India

Article Sidebar

PDF
Published: Feb 10, 2016
DOI: https://doi.org/10.4401/ag-6844
Keywords:
Gas hydrate saturation, Effective medium modeling, Krishna-Godavari Basin, Fracture orientation distribution

Main Article Content

Yudhvir Singh
Indian Institute of Technology Madras, Department of Ocean Engineering, Chennai,
Rajesh R. Nair
Indian Institute of Technology Madras, Department of Ocean Engineering, Chennai,

Abstract

We estimate the gas-hydrate saturation in fractured reservoirs of gas hydrate-rich marine sediments from Krishna-Godavari basin along the eastern margin of India. Effective medium modeling (EMM) is a combination of self-consistent approximation (SCA), differential effective medium (DEM) modeling and smoothing and it deals with the anisotropy associated with clay platelets’ orientation. It proves to be a good choice attributable to its dependency on physical parameters alone. Previous approaches appertain to the implementation of orientation distribution function (ODF) on clay platelets alone assuming a vertical ellipsoidal shape of gas hydrates whilst in the present study, we have implemented ODF on hydrate bearing fractures assigning an ellipsoidal shape to them as well. A bias of ~2-4% in the saturation estimates apparently streamlines the betterness of our method.

Article Details

How to Cite
1.
Singh Y, Nair RR. Influence of fracture orientation distribution function on the estimates of gas-hydrate saturation of site 10 at Krishna-Godavari Basin, India. Ann. Geophys. [Internet]. 2016Feb.10 [cited 2022Jun.26];58. Available from: https://www.annalsofgeophysics.eu/index.php/annals/article/view/6844
Issue
Vol. 58 (2015): Fast Track 3
Section
Letters

Open-Access License

No Permission Required

Istituto Nazionale di Geofisica e Vulcanologia applies the Creative Commons Attribution License (CCAL) to all works we publish.

Creative Commons License

Under the CCAL, authors retain ownership of the copyright for their article, but authors allow anyone to download, reuse, reprint, modify, distribute, so long as the original authors and source are cited. No permission is required from the authors or the publishers.

In most cases, appropriate attribution can be provided by simply citing the original article.
If the item you plan to reuse is not part of a published article (e.g., a featured issue image), then please indicate the originator of the work, and the volume, issue, and date of the journal in which the item appeared. For any reuse or redistribution of a work, you must also make clear the license terms under which the work was published.
This broad license was developed to facilitate open access to, and free use of, original works of all types. Applying this standard license to your own work will ensure your right to make your work freely and openly available. For queries about the license, please contact ann.geophys@ingv.it.