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Title: Advanced Gas Hydrate Reservoir Modeling Using Rock Physics

Abstract

Prospecting for high saturation gas hydrate deposits can be greatly aided with improved approaches to seismic interpretation and especially if sets of seismic attributes can be shown as diagnostic or direct hydrocarbon indicators for high saturation gas hydrates in sands that would be of most interest for gas hydrate production. A large 3D seismic data set in the deep water Eastern Gulf of Mexico was screened for gas hydrates using a set of techniques and seismic signatures that were developed and proven in the Central deepwater Gulf of Mexico in the DOE Gulf of Mexico Joint Industry Project JIP Leg II in 2009 and recently confirmed with coring in 2017. A large gas hydrate deposit is interpreted in the data where gas has migrated from one of the few deep seated faults plumbing the Jurassic hydrocarbon source into the gas hydrate stability zone. The gas hydrate deposit lies within a flat-lying within Pliocene Mississippi Fan channel that was deposited outboard in a deep abyssal environment. The uniform architecture of the channel aided the evaluation of a set of seismic attributes that relate to attenuation and thin-bed energy that could be diagnostic of gas hydrates. Frequency attributes derived from spectral decompositionmore » also proved to be direct hydrocarbon indicators by pseudo-thickness that could be only be reconciled by substituting gas hydrate in the pore space. The study emphasizes that gas hydrate exploration and reservoir characterization benefits from a seismic thin bed approach.« less

Authors:
 [1]
  1. Fugro GeoConsulting, Inc., Houston, TX (United States)
Publication Date:
Research Org.:
Fugro GeoConsulting, Inc., Houston, TX (United States)
Sponsoring Org.:
USDOE Office of Fossil Energy (FE), Oil and Natural Gas (FE-30)
OSTI Identifier:
1435441
Report Number(s):
DOE-FUGRO-10160
DOE Contract Number:
FE0010160
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
03 NATURAL GAS; methane hydrate; gas hydrate; seismic characterization; Gulf of Mexico

Citation Formats

McConnell, Daniel. Advanced Gas Hydrate Reservoir Modeling Using Rock Physics. United States: N. p., 2017. Web. doi:10.2172/1435441.
McConnell, Daniel. Advanced Gas Hydrate Reservoir Modeling Using Rock Physics. United States. doi:10.2172/1435441.
McConnell, Daniel. Sat . "Advanced Gas Hydrate Reservoir Modeling Using Rock Physics". United States. doi:10.2172/1435441. https://www.osti.gov/servlets/purl/1435441.
@article{osti_1435441,
title = {Advanced Gas Hydrate Reservoir Modeling Using Rock Physics},
author = {McConnell, Daniel},
abstractNote = {Prospecting for high saturation gas hydrate deposits can be greatly aided with improved approaches to seismic interpretation and especially if sets of seismic attributes can be shown as diagnostic or direct hydrocarbon indicators for high saturation gas hydrates in sands that would be of most interest for gas hydrate production. A large 3D seismic data set in the deep water Eastern Gulf of Mexico was screened for gas hydrates using a set of techniques and seismic signatures that were developed and proven in the Central deepwater Gulf of Mexico in the DOE Gulf of Mexico Joint Industry Project JIP Leg II in 2009 and recently confirmed with coring in 2017. A large gas hydrate deposit is interpreted in the data where gas has migrated from one of the few deep seated faults plumbing the Jurassic hydrocarbon source into the gas hydrate stability zone. The gas hydrate deposit lies within a flat-lying within Pliocene Mississippi Fan channel that was deposited outboard in a deep abyssal environment. The uniform architecture of the channel aided the evaluation of a set of seismic attributes that relate to attenuation and thin-bed energy that could be diagnostic of gas hydrates. Frequency attributes derived from spectral decomposition also proved to be direct hydrocarbon indicators by pseudo-thickness that could be only be reconciled by substituting gas hydrate in the pore space. The study emphasizes that gas hydrate exploration and reservoir characterization benefits from a seismic thin bed approach.},
doi = {10.2172/1435441},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Dec 30 00:00:00 EST 2017},
month = {Sat Dec 30 00:00:00 EST 2017}
}

Technical Report:

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