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F-K Characteristics of the Seismic Response to a Set of Discrete Parallel Fractures
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2006)
We model seismic wave propagation in a reservoir with discrete fracture zones using a finite difference scheme, which implements the Coates-Schoenberg formulation for fractured media. We study the variation of scattered ...
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 ...
Fracture Quality From Integrating Time-Lapse VSP and Microseismic Data
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2007)
Tight gas reservoirs are problematic to produce, often requiring multiple stages of hydraulic fracturing in order to create connected pathways through which hydrocarbons may flow. In this paper, we propose a new methodology ...
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 ...
Analysis of Scattered Signal to Estimate Reservoir Fracture Parameters
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2007-05)
We detect fracture corridors and determine their orientation and average spacing based on an analysis of seismic coda in the frequency-wave number (f-k ) domain. Fracture corridors have dimensions similar to seismic ...
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 ...
Fracture quality images from 4D VSP and microseismic data at Jonah Field, WY.
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2009)
Natural and induced fractures provide the only means of production in tight gas sand reservoirs.
The objective of this work is to locate and characterize natural and induced fractures from the
analysis of scattered waves ...
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 ...
Fracture Density Estimation Using Spectral Analysis of Reservoir Reflections: A Numerical Modeling Approach
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2003)
We use a 3-D finite difference numerical model to generate synthetic seismograms from a simple fractured reservoir
containing evenly spaced, discrete, vertical fractures. The fractures are represented using a single column ...
A Novel Application of Time Reversed Acoustics: Salt Dome Flank Imaging Using Walk Away VSP Surveys
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2005)
In the past few years, there has been considerable research and interest in a topic known by various names, such as Time Reverse Acoustics (TRA), Time Reverse Mirrors (TRM), and Time Reverse Cavities (TRC), which exploits ...