All Title Author
Keywords Abstract

Publish in OALib Journal
ISSN: 2333-9721
APC: Only $99

ViewsDownloads

Relative Articles

AVO numerical simulation of gas hydrates reflectors beneath seafloor
海底天然气水合物层界面反射AVO数值模拟

Theory and application of AVO for detection of coalbed methane --A case from the Huainan coalfield
AVO探测煤层瓦斯富集的理论探讨和初步实践——以淮南煤田为例

Vertical Migration of Fine-Grained Sediments from Interior to Surface of Seabed Driven by Seepage Flows–‘Sub-Bottom Sediment Pump Action' Vertical Migration of Fine-Grained Sediments from Interior to Surface of Seabed Driven by Seepage Flows–‘Sub-Bottom Sediment Pump Action'

Interaction between hydrocarbon seepage, chemosynthetic communities, and bottom water redox at cold seeps of the Makran accretionary prism: insights from habitat-specific pore water sampling and modeling

Interaction between hydrocarbon seepage, chemosynthetic communities and bottom water redox at cold seeps of the Makran accretionary prism: insights from habitat-specific pore water sampling and modeling

Advances in AVO technique
AVO技术进展

TESTING STUDY ON SEEPAGE PROPERTIES OF METHANE GAS IN COAL UNDER THE ACTION OF GEO-ELECTRIC FIELD
地电场作用下煤中甲烷气体渗流性质的实验研究

The Precision analyses of AVO inversion in one-phase medium
单相介质AVO反演的精度分析

FULL WAVEFORM INVERSION OF GAS HYDRATE-RELATED BOTTOM SIMULATING REFLECTORS
天然气水合物似海底反射层的全波形反演

Reflectors for VCN and applications of VCN

More...

Linking Methane Seepage to Fluid Flow Mechanisms: Evidence from AVO Characteristics of Bottom Simulating Reflectors

DOI: 10.3968/j.aped.1925543820130501.972

Keywords: Methane hydrate , Gas dynamics , Seismic reflections , Plumbing system , Amplitude versus offset (AVO) , Bottom simulating reflector

Full-Text   Cite this paper   Add to My Lib

Abstract:

The presence of gas hydrates over continental margins may be inferred by various seismic indicators, including the bottom simulating reflector (BSR). Recently, the occurrence of two BSRs have been reported from many regions of the world. In this study we estimate the uncertainty in amplitude versus offset (AVO) behaviour of the single BSR and double bottom simulating reflector (DBSR) observed over two geological provinces; the Kerala-Konkan Basin, offshore India and Green Canyon, offshore USA, and attempt to infer a mechanism for the observed anomalies from the AVO patterns. Anomalous behaviour of seismic velocities within the gas hydrate stability zone (GHSZ) associated with the occurrence of DBSRs, low amplitude seismic chimneys and bright spots, indicates increased hydrate concentration and fluid venting structures underneath the DBSR locations. Such structures, if extended upward into the regional GHSZ through discrete fracture networks, may act as a passage for methane escape into the ocean. Our analysis indicates that the variability in AVO signatures for gas hydrate saturated sediments is potentially linked to the discrete zones of steeply inclined fractures that are responsible for the migration of deep gas and its escape through the seabed. Key Words: Methane hydrate; Gas dynamics; Seismic reflections; Plumbing system; Amplitude versus offset (AVO); Bottom simulating reflector

Full-Text

comments powered by Disqus