alexa AVO Modelling of the South-East Niger Delta, Nigeria | OMICS International | Abstract
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Research Article

AVO Modelling of the South-East Niger Delta, Nigeria

Uko ED1 and Emudianughe JE2*
1Department of Physics, Rivers State university of Science and technology, PMB 5080, Port Harcourt, Nigeria
2Department of Earth Sciences, Federal University of Petroleum Resources, Effurun, Delta State, Nigeria
Corresponding Author : E Emudianughe
Department of Earth Sciences
Federal University of Petroleum Resources
Effurun, Delta State, Nigeria
Tel: +2348055501152
E-mail: emudianughe.julie[email protected]
Received August 20, 2014; Accepted September 19, 2014; Published September 23, 2014
Citation: Uko ED, Emudianughe JE (2014) AVO Modelling of the South-East Niger Delta, Nigeria. J Geophys Remote Sensing 3:131. doi:10.4172/2169-0049.1000131
Copyright: © 2014 Uko ED, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Amplitude Versus Offset (AVO) modelling was carried out using pre-stack seismic and well-log data in the south-east Coastal Swamp of Niger Delta. The results of the work demonstrated that seismic pres-stack and well-log data provided valuable information in modelling a reservoir and other important intervals in wells. Amplitude-Versus-Angle (AVA)/ Amplitude-Versus-Offset (AVO) extracted from pre-stack seismic data identified gas sand of AVO Class 3 type. Sand- shale lithology is deduced, with sandstone volume decreasing with increasing depth, while shale volume increases with depth. Porosity and permeability showed decreasing trend with depth for both sandstone and shale units. Velocity, GR (API), Poisson’s ratio, V p /V s and density increase with increasing depth. Compressional-velocity V p and shear-wave V s are linearly related, and mudrock line equation is established for the study area: V p =0.807Vs+1.600. The results of this work can be used as an Exploration tool for the identification or evaluation of prospective areas, locations and also for feasibility studies during an appraisal activity.

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