GEOSCAN Search Results: Fastlink


TitleGeophysical Characterization of Gas Hydrates
AuthorRiedel, M (ed.); Willoughby, E CORCID logo (ed.); Chopra, S (ed.)
SourceSociety of Exploration Geophysicists, Geophysical Developments Series no. 14, 2010, 408 pages,
Alt SeriesEarth Sciences Sector, Contribution Series 20110176
PublisherSociety of Exploration Geophysicists
Mediapaper; on-line; digital
File formatpdf
Subjectsfossil fuels; geophysics; hydrocarbons; hydrocarbon potential; hydrocarbon gases; hydrate; exploration methods; seismic exploration; petroleum exploration; exploration; seismic data; geophysical surveys
Illustrationsplots; profiles; photographs; graphs; tables
ProgramGas Hydrates
Released2012 04 24
AbstractThe occurrence of gas hydrates in large quantities worldwide, and their immense energy potential have prompted concerted efforts into their exploration and understanding over the last many years. During this time, geophysical characterization of natural gas hydrate occurrences by seismic and other methods have gained prominence, and such studies have been reported from time to time. However, no compilation of such studies was ever attempted. This SEG publication, Geophysical Characterization of Gas Hydrates (Geophysical Developments No. 14), is the first book on the topic that focuses on documenting various types of geophysical studies that are carried out for the detection and mapping of gas hydrates. The editors have organized 20 papers as individual chapters into five sections, along with a brief introductory chapter for each section. Section 1 has two chapters that serve as introduction and motivation for geophysical investigations into gas hydrates. Section 2 on seismic imaging includes five chapters that discuss several seismic techniques with applications to various geologic settings. These comprise the indicators of gas hydrates in marine data such as BSRs, the use of AVO, seismic inversion, full-waveform inversion, VSPs, and multicomponent data in the assessment, detection, and quantification of gas hydrates. As the occurrence of gas-hydrate deposits affect the physical and chemical properties of the host sediments, various additional geophysical techniques including electromagnetics, magnetics, and infrared imaging are used for their detection, and these comprise Section 3. Section 4 discusses borehole methods aimed at characterization of gas hydrate environments and includes the conventional log-based measurements, special logging measurements like NMR, as well as logging-while-drilling, and measurement-while-drilling applications. Because of their higher vertical resolution, such measurments serve as useful calibration points that are required for accurate analysis. Finally, Section 5 discusses rock-physics modeling and gas-hydrate laboratory studies. While rock-physics modeling helps link log measurements with seismic reflection profiles for estimating gashydrate concentrations, creation of artificial gas-hydrate-bearing sediments using different techniques is also necessary, for instance, when characterizing engineering properties of gas-hydrate-bearing sediments. The contributing authors for the different chapters are experts and well-known researchers in their respective fields. The book will be of interest to geophysicists, petroleum geologists, geochemists and those enthusiastic minds who seek the unknown in the field of energy resources.

Date modified: