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Sensitivity of time lapse seismic data to the compliance of hydraulic fractures
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2013)
We study the sensitivity of seismic waves to changes in the fracture normal and tangential compliances by analyzing the fracture sensitivity wave equation, which is derived by differentiating the elastic wave equation with ...
Seismic imaging of hydraullically-stimulated fractures: A numerical study of the effect of the source mechanism
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2012)
We present a numerical study of seismic imaging of hydraulically stimulated fractures using a single source from an adjacent fracturing-process. The source is either a point force generated from the perforation of the ...
A Short Note on Modeling Wave Propagation in Media with Multiple Sets of Fractures
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2005)
Wave propagation and scattering in fractured formations have been modeled with
finite-difference programs and the use of equivalent anisotropic media description of
discrete fractures. This type of fracture description ...
Data-Driven Estimation of the Sensitivity of Target-Oriented Time-Lapse Seismic Imaging to Source Geometry
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2012)
The goal of time-lapse imaging is to identify and characterize regions in which the
earth's material properties have changed between surveys. This requires an effective deployment of sources and receivers to monitor the ...
Seismic characterization of reservoirs with variable fracture spacing by double focusing Gaussian beams
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2013)
Fractured reservoirs account for a majority of the oil production worldwide and often have low recovery rate. Fracture characterization is important in building reservoir flow models for enhanced oil recovery. Information ...
High-dimensional wave atoms and compression of seismic datasets
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2013)
Wave atoms are a low-redundancy alternative to curvelets, suitable for high-dimensional seismic data processing. This abstract extends the wave atom orthobasis construction to 3D, 4D, and 5D Cartesian arrays, and parallelizes ...
Numerical modeling of elastic wave scattering by near-surface heterogeneities
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2013)
A perturbation method for elastic waves and numerical forward modeling are used to calculate the effects of seismic wave scattering from arbitrary shape shallow subsurface heterogeneities. Wave propagation is simulated ...
Structural uncertainty and geophysical data fusion: A synthetic example
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2003)
We attempt to address two issues in seismic data processing: 1) quantifying the various forms of error that enter into the seismic data processing work-flow and relating them to uncertainty on imaged structures; and, 2) ...
In Situ, Nonlinear Soil Response Applying an Active Source
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2009)
Soil sites have a profound effect on ground motion during earthquakes due to their low wave
speeds, layered structure, and nonlinear constitutive relationship. Measurements of nonlinear soil
response under natural ...
Sensitivity Analysis Of Amplitude Variation With Offset (Avo) In Fractured Media
(Massachusetts Institute of Technology. Earth Resources Laboratory, 1998)
The variation in seismic P to P reflection amplitude with offset (AVO) caused by a
system of fractures embedded in an isotropic background is investigated. Additionally.
a sensitivity analysis of AVO parameters with ...