Articles
Memorial Scholarship – Robert (Bob) Won, P. Geoph
Perry Kotkas
This article catches some fleeting glimpses into the life and times of Bob Won, who passed away at the age of 59 years in Calgary from cancer of the pancreas.
... ASEG ‘98 Conference
"Crossing the Borders" was the theme of the 11th International Australian Society of Exploration Geophysicists conference held in Hobart, Tasmania this year which was co-hosted by both the SEG and EAGE. The theme revolved around the integration of methods which are traditionally "petroleum" or "mining" geophysics into other branches of…
Interpreting Sand Channels from 3C-3D Seismic Inversions
John Pendrel, Robert R. Stewart and Paul Van Riel
Shear waves can provide vital lithologic information, especially in combination with traditional P-wave seismic data or when P-wave sections contain ambiguities. An example is the Lower Cretaceous Glauconite Channel play of southern Alberta, Canada. Here channels can be filled with sands and / or shales, each with similar P-wave impedances.…
4D Seismic: Can a Difference Make a Difference?
David H. Johnston
4D seismic reservoir monitoring (timelapse seismic) has the potential to significantly increase recovery in existing and new fields. Changes in fluid saturation, pressure, and temperature that occur during production induce changes in the reservoir's density and compressibility that may be detected by differencing repeated seismic data. As a result, seismic…
Past President’s Luncheon & Past Technical Meetings
Nattalia Lea
Last November 23, 1998's past president's luncheon, held at the Palliser Hotel, was a far cry from earlier meetings. For starters, a few past presidents have left town. Francis Hale CSEG president '60 now hails from Tucson, H.J. Kidder CSEG '59 from Dallas and Dennis O'Brien CSEG '79 from Denver.…
Waiting to Rock and Roll with Shake – A CSEG Superfund Up-Date
Nattalia Lea
Last year, when the CSEG Superfund awarded $8,000 to an earthquake awareness outreach project proposed by Dr. David Eaton, an earth sciences assistant professor from the University of Western Ontario - the timing could not have been more perfect. On September 25, 1998, a moderate earthquake of 5.2 on the…
Depth Imaging of Elastic Wavefields – Where P Meets S
Brian H. Hoffe and Laurence R. Lines
The multicomponent recording of reflected elastic wavefields allows for an analysis of compressional and shear wave velocities. For seismic arrivals initiated by dynamite sources and reflected from a layered sedimentary system, it is natural to consider both P and P-S reflections as recorded on vertical and inline components of the…
The Seismic Velocity Model as an Interpretation Asset February 8, 1999
A velocity model can have enduring and growing interpretive value, beyond its initial creation to optimize the seismic image. The 3D velocity model is often built carefully with a combination of geophysical and geological input, because of the accuracy demands placed on it by the requirements of depth imaging. As…
Seismic Acquisition Forum 1998
Nattalia Lea
A little bit of snow on the roads didn't deter 470 participants from stampeding down to the Calgary Convention Centre for the Seismic Acquisition Fall Forum, dubbed Before the First Shot. Industry representatives, contractors, government agencies and consultants came to network, brainstorm and share ideas. Sponsored by the Canadian Society…
Structural, stratigraphic and tectonic resolution of marine 3-D seismic data, Jeanne d'Arc Basin Offshore Newfoundland
M.E. Enachescu, G.W. Smee, P.J. Meehan, D.J. Emery, A. Skuce and L.T. Brady
The largest seismic survey to date in Canada was acquired during the summer of 1997 in the Jeanne d'Arc Basin, off Newfoundland. Over 70,000 CDP km. distributed in an area of approximately 2000 sq. km. was collected on behalf of 10 oil companies active in the area. This survey covers…
Seismic Acquisition Forum, Before the First Shot
Perry Kotkas
So I'm supposed to write a report on the Forum...? Would anybody actually want to read such a thing? Well, Nancy Shaw, President of the CSEG, said to try to make it interesting, so here goes...
... Exploration Applications of the Multipole Acoustic Log: A Case Study
Lee Hunt and Glen Hard
This paper will illustrate the role of the full waveform acoustic log as a useful tool in the exploration cycle of the example well. This cycle, as illustrated in figure 1 below, includes the petrophysical evaluation of a newly drilled location, the seismic inversion work that was used to identify…
Superfund: Calgary Science Teachers Survive Hurricane Frances
Nattalia Lea
While many CSEG members were putting around in Banff at this past year's Doodlebug, Bill Batycky was getting some first hand experience on what life with hurricanes was all about.
... The structural style and seismic image of thrust related folding in the southern Canadian Cordillera
Paul A. MacKay
The structural style of the southern Canadian Cordillera is dominated by thrust faults. Associated with the thrust faults are folds, typically a hanging wall anticline and a footwall syncline. Examples of thrust-related folds are exposed in outcrop throughout the southern Canadian Rocky Mountains. In outcrop these folds are characterized as…
Destination Mars
Nattalia Lea
The planet Mars is a mere 100 million miles away from Earth. Yet for 1,676 persons on the evening of October 6, this distance seemed insignificant at the Destination Mars CSPG/CSEG joint presentation. Here, results from the Mars Pathfinder Mission of July 1997 were revealed. Everyone gawked at the extra-ordinary…
Anisotropic Pre-Stack Depth Migration
Jennifer M. Leslie and Don C. Lawton
... Slip Slidin’ Away – Some Practical Implications of Seismic Velocity Anisotropy on Depth Imaging
Don Lawton, Helen Isaac, Jennifer Leslie and Rob Vestrum
We can no longer ignore seismic velocity anisotropy in seismic data processing. Laboratory and field studies have provided compelling evidence that shales exhibit intrinsic transverse isotropy (TI), in which the seismic velocity parallel to the laminations is greater than that perpendicular to the layering, with the difference being as high…
Geo-Triad ‘98 – A More Relaxed and Pensive Perspective
Doug Uffen
It was one eventful day in May 1996, when Jim Reimer called me up. He told me of a project that the CSPG, CSEG and the CWLS wished to conduct. In 1998, the three societies were to hold a joint convention. I think I remember agreeing to help out. So…
SEG ‘98 – Geophysics in The Big Easy
Nancy Shaw
It's only September 20th, but the International Exposition and Sixty-eighth Annual Meeting of Society of Exploration Geophysicists is already in the can. For those people who didn't get a chance to visit New Orleans, the Indian summer weather in Calgary was more hospitable than the heat and humidity of New…
General Hospital Implosion
Nattalia Lea
To join in the thrill of history in the making, an urban seismic survey was conducted by the University of Calgary's Geology and Geophysics Department to record the effects of the Calgary General Hospital Implosion. Such an idea was conceived by Walter Andreeff, a first year science student.
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