American Oil and Gas Reporter - July 2015 - 107

SpecialReport: Seismic Acquisition & Reservoir Modeling
crossing well A fractures in many locations). The predicted locations for fracture
interaction actually were recorded by the
producing pressures and volumes in well
A during the frac treatment of well B.
The predicted stages of interaction were
confirmed by well A production data.
The producing rock volume for well
A was computed during quiet times both
before and after stimulating well B. The
workflow for computing the producing
volume tracks the activated voxels in the
depth volume and passes only the active
voxels that are connected to the well
either directly or through other voxels.
This is different from the fracture imaging
workflow that maps the areal fractures
(middle panel of Figure 5).
Figure 6 shows the two computed
producing volumes overlaid on the areal
fractures. The producing volume in Well
A after the frac of well B (right) is 20
percent smaller than the producing volume
computed before well B was fractured
(left). The treatment of well B interacted
with well A and caused the production
from the first well to drop.
r

CHARLES
SICKING

Charles Sicking is vice president of
research and development at Global
Geophysical Services. He led the development of the company's microseismic
processing system. Before joining Global
Geophysical, he was chief geophysicist
at Weinman GeoSciences. He also formerly served as a research geophysicist
at ARCO. During his career, Sicking
has developed multiple seismic processing algorithms and technologies
for 2D and 3D velocity model building
using time-to-depth and depth imaging
applications. He also led the development
of the seismic wavelet processing flow
and methodology for ARCO's seismic
processing system. He holds a B.A. in
physics and a Ph.D. in geophysics from
the University of Texas at Austin.

FIGURE 6
Computed Active Producing Volume
Before Well B Frac

JAN
VERMILYE

Jan Vermilye is manager of microseismic processing and interpretation,
and the principal geologist for tomographic fracture imaging at Global Geophysical Services. She started her career
in academia, investigating the relationship between seismicity and fracture
mechanics with the Southern California
Earthquake Center and serving as chairwoman of the environmental science department at Whittier College. Vermilye
was a research geologist with STRM
LLC from 2004 to 2011, working on developing TFI technology. She joined
Global in 2011. She holds a B.A. in geology from the State University College
of New York at New Paltz, and an M.S.
and a Ph.D. in structural geology from
Columbia University.

After Well B Frac

ALFRED
LACAZETTE

Alfred Lacazette is a senior geological
adviser at Global Geophysical Services
Inc. With more than 25 years of experience
in structural geology, tectonics and fractured reservoir analysis, he began his
career as a fractured reservoir specialist
at Texaco. He then served at Western
Atlas and Golder Associates before establishing NaturalFractures.com, an independent consulting company active in
international and domestic projects. From
2008 to 2011, Lacazette worked for EQT
Production on the structural geology of
unconventional reservoirs. He joined
Global Geophysical in 2011 as manager
of unconventional consulting. He holds
a B.S. and an M.S. in geology from the
University of Kentucky, and a Ph.D. in
geoscience from Pennsylvania State University.
JULY 2015 107



American Oil and Gas Reporter - July 2015

Table of Contents for the Digital Edition of American Oil and Gas Reporter - July 2015

Contents
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American Oil and Gas Reporter - July 2015 - Contents
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