Search
Now showing items 1-10 of 18
Estimate the Effective Elastic Properties of Digitized Porous Rocks by Inverting the Cracks Unresolved
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2010)
Current imaging technique such as micro X-ray CT can provide us detailed 3D micro-structures of porous
rocks that can be used in numerical simulation so as to predict elastic properties of rocks saturated with
different ...
Downhole microseismic monitoring of hydraulic fracturing: a full-waveform approach for complete moment tensor inversion and stress estimation
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2010)
Downhole microseismics has gained in popularity in recent years as a way to characterize hydraulic fracturing sources and to estimate in-situ stress state. Conventional approaches only utilize part of the information ...
Interferometric imaging of multiples in an RTM approach
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2010)
It is well known that reverse-time migration is capable of correctly
imaging multiply scattered energy. To do this, one of the interfaces
from which the waves scatter must be included in the background velocity
model. ...
Modeling of acoustic wave scattering from a two-dimensional fracture
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2010)
In this paper, we model the acoustic scattering from a two dimensional fracture that is simulated by two different physical models. We calculate the scattering from the fractures with different properties based on these ...
Imaging the Soultz Enhanced Geothermal Reservoir Using Double-Difference Tomography and Microseismic Data
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2010-06)
We applied the double-difference tomography method to image the P and S-wave
velocity structure of the European Hot Dry Rock geothermal reservoir (also known
as the Soultz Enhanced Geothermal System) at Soultz-sous-Forets, ...
Detecting medium changes from coda by interferometry
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2010)
In many applications, sequestering CO[subscript 2] underground for example,
determining whether or not the medium has changed is
of primary importance, with secondary goals of locating and
quantifying that change. We ...
Sensitivity analysis of fracture scattering
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2010)
The understanding of seismic scattering of a finite fracture
is very important in reservoir fracture characterizations, but
the analytical solution of this problem is not available. Thus,
in this paper, we present an ...
Focal Mechanism Determination Using High Frequency Waveform Matching and Its Application to Small Magnitude Induced Earthquakes
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2010)
We present a new method using high frequency full waveform information to determine the
focal mechanisms of small, local earthquakes monitored by a sparse surface network. During the
waveform inversion, we maximize both ...
Surface-wave eikonal tomography in a scattering environment
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2010)
Surface waves are of increasing interest in seismic prospecting. Traveltime tomography based on
dispersion measurements is often used to process surface-wave data, but it has limitations due to the
a priori information ...
Recursive Imaging with Multiply-Scattered Waves Using Partial Image Regularization: A North Sea Case Study
(Massachusetts Institute of Technology. Earth Resources Laboratory, 2010)
As more resources are directed toward reverse-time migration an accurate velocity
model, including strong reflectors, is necessary to form a clear image of the subsurface.
This is of particular importance in the vicinity ...