Norris Conference Center
816 Town & Country Blvd.
Houston, TX 77024
(Free parking off Beltway-8 northbound feeder or Town & Country Blvd.)
Meeting Time: 11:00 to 1:00 pm
Registration Begins at 11:00
Lunch Served at 11:30
Presentation starts at Noon
NOTE: You Must Be Logged In to Register.
Speakers: Bruce Karr, FairfieldNodal
3D seismic data recorded into traditional vertical geophones can
produce an SV-P converted-wave data volume. However, there is a
challenge in resolving both the statics and velocities while separating
out the SV-P image from the P-wave portion of the data. The primary
difficulty is in resolving the velocity and statics associated with the
signal of interest, SV-P, which is buried in the slower velocity and
deeper time portion of the seismic P-wave record. In other words when
looking at a gather in offset order and moved out with a P-wave
velocity, you will often see many under moved out events and more of
those events with increasing time. This is the portion of the gather
that has always been referred to as containing noise, coherent noise,
multiples, and mode-converted responses. This presentation looks at a
real-data example which took advantage of using the traditional P-SV
processed converted-wave-stack velocities and statics as the basis for
looking for the SV-P equivalent stack. In particular, if we know the
velocity field and the final P-SV stack from traditional converted wave
data, can we successful resolve statics and velocities to create the
SV-P image? This data example shows it can be done.
Speaker Biography: Bruce Karr, FairfieldNodal
Karr, Technical Sales Manager for Fairfield Seismic Technologies, has
worked for FairfieldNodal since 1994 as a Geophysicist. Mr. Karr’s
processing expertise includes 3D and 4D multi-component land data, with
particular focus on geophysical problems including long wave length
statics, spectral enhancement, noise, depth-time issues, multi-component
data and field technology.
Mr. Karr received a BS in Geophysical Engineering and a minor in Geology
from the Colorado School of Mines in 1988, and began his career with
GSI shortly after graduation. After two years of field work in Saudi
Arabia, and after GSI was purchased by Halliburton, Mr. Karr was
transferred to Midland, Texas, where he began processing seismic data.
By the early 1990s, West Texas was a prolific region for 3D surveys, and
Mr. Karr learned his trade on 3D projects in the Midland and Delaware
basins. Five years later, after Halliburton sold their geophysical
services, Mr. Karr moved to Denver to begin work for Golden Geophysical,
which was later purchased by Fairfield Industries.
Mr. Karr has worked with students and professors in partnership with the
Colorado School of Mines Reservoir Characterization Project (RCP),
Golden, Colorado; the Bureau of Economic Geology Consortium (EGL),
Austin, Texas; and the Kansas Geological Survey (KGS), Lawrence, Kansas.
Mr. Karr’s latest projects have focused on the Permian Basin,
Mid-continent and Rockies. Most recently, Mr. Karr has produced or
coproduced a number of papers and presentations concentrating on his
areas of expertise in solving geophysical and geologic problems. As a
member of the FairfieldNodal team, Mr. Karr uses his knowledge to help
clients resolve complex land project challenges.
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