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Seismic characterization of fractured reservoirs using 3D double beams
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2012)
We propose an efficient target-oriented method to characterize seismic properties of fractured reservoirs: the spacing between fractures and the fracture orientation. We use both singly scattered and multiply scattered ...
Simultaneous inversion for fast azimuth and dispersion of borehole flexural waves using cross-dipole data
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2002)
This paper presents an inversion algorithm for obtaining azimuthal angle and borehole flexural wave dispersion in an anisotropic formation. The technique constructs an objective function that can be minimized using standard ...
Simultaneous Inversion of cross-dipole acoustic waveforms in anisotropic media for azimuthal angle and dispersion of fast and slow shear waves
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2003)
A method to jointly invert for azimuthal angle and dispersion relations from cross-dipole data is presented. Dispersion curves from the joint inversion are compared to both Prony’s method and a simple back propagation ...
Fractured Reservoir Characterization using Azimuthal AVO
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2003)
Ordinary least squares is used to investigate the ability to detect changes in physical properties
using Amplitude Versus Offset (AVO) information collected from seismic data. In order to characterize
vertically aligned ...
Fluid Flow Simulation in Fractured Reservoirs
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2002)
The purpose of this study is to analyze fluid flow in fractured reservoirs. In most petroleum reservoirs, particularly carbonate reservoirs and some tight sands, natural fractures play a critical role in controlling fluid ...
Fracture Spacing and Orientation Estimation from Spectral Analyses of Azimuth Stacks
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2005)
Discrete, vertically aligned fracture systems impart one or more notches in the spectral ratios of stacked reflected seismic traces. This apparent attenuation is due to the azimuth dependant scattering introduced by the ...
Nonlinear Soil Response in the Near-Field of a Vibrator Truck: Application to Land Seismic Surveys
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2007)
The nonlinear behavior of soils can significantly modify the wavelet radiated from
vibrator trucks. In this paper, we describe a field experiment designed to measure the
nonlinear response of a natural soil formation in ...
Orientation Estimation for Multiple Large Fractures by Scattering Energy
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2006)
We have done the numerical modeling of seismic response to multiple sets of vertical large fractures by using finite-difference method (FD), which can easily handle media with monoclinic anisotropy. We consider three types ...
Spatial Orientation And Distribution Of Reservoir Fractures From Scattered Seismic Energy
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2005)
We present the details of a new method for determining the reflection and scattering characteristics of seismic energy from subsurface fractured formations. The method is based upon observations we have made from 3D finite ...
Dispersion Analysis Of Cross-Dipole Data
(Massachusetts Institute of Technology. Earth Resources Laboratory, 1998)
In this paper, we demonstrate that dispersion analysis of cross-dipole data has promising
potential not only for differentiating stress-induced anisotropy from intrinsic anisotropy, but also for providing information on ...