Articles

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March 1994

Earthquakes and Hydrocarbon Production Near Fort St. John, B.C.

R.B. Horner, J.E. Barclay and J.M. MacRae

Beginning in 1984, a number of earthquakes have occurred in a region of oil and gas production just north of Fort St. John, B.C. Through 1993, 24 events have been detected ranging in magnitude (M) from about M 2.5 to M 4.1. The activity over the past two years has…

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March 1994

Recent Advances in Gravity Acquisition and Instrumentation – Part II

Dr. Erwin Ebner

Very high quality gravity surveys have been carried out for nearly half a century now. I have personally seen small gravity survey results from the late 1940's which rival present day quality. The main reason for this lies in the care with which these surveys were acquired. It took considerable…

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February 1994

An Evaluation of Ground Penetrating Radar for Imaging the Near Surface Examples from Contaminant Map

Don C. Lawton and Harry M. Jol

Ground penetrating radar (GPR) is becoming established as a new geophysical technique for imaging the near-surface. In this presentation, we assess GPR in terms of its application in the petroleum industry, and evaluate its capabilities for mapping a contaminated site near downtown Calgary and for delineating the internal geometry of…

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February 1994

3-D Survey Design by Computer

Mike Galbraith

3-D Acquisition requires careful planning. Laying out lines of receivers and lines of shots must be done with an eye to the expected results. Computer programs are now available to assist the geophysicist in this task.

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January 1994

3-D Survey Design by Computer

Mike Galbraith

oday's 3-D surveys can be large or small, laid in straight lines across deserts or tundra or along winding roads through forest and jungles. Because 3-D acquisition requires careful planning it is essential to analyze the complexities which naturally arise. Computer programs are now available to assist the explorationist with…

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January 1994

Pole Shooting

Rupert Goodhart

Surface shooting and other portable techniques were introduced to Canada to eliminate the impact of "dozing" wide seismic lines in beautiful and fragile terrain. The Foothills are not only a petroleum province with hydrocarbon resources in the many billions of dollars, but an area of scenic beauty without compare which…

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December 1993

1993 SEG Summer Workshop

Michael Enachescu

This year's SEG summer research workshop took place August 1-6, 1993, in Rancho Mirage, an exclusive golf and country resort situated in the southern California desert area. The day most of the participants arrived, the Palm Springs airport was shut down at 5 pm due to over-heating of the tarmac.

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December 1993

CSEG/CSPG/APEGGA Liaison Committee

John W. Peirce

The CSEG/CSPG/APEGGA Liaison Committee has been focussing on issues of concern which have been raised by geologists and geophysicists who have complained about certain APEGGA policies. Our goal is to try to facilitate change from within the system in order to demonstrate that APEGGA can be sensitive to members' needs…

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December 1993

Trends in Seismic Data Acquisition – A Perspective

Kevin Williams

Many of the technical changes taking place in the oil industry are evident in the office of the explorationist. Desk top processing, workstation based 3D interpretation and visualization packages are familiar tools to the "state of the art" geophysicist.

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November 1993

Limitations on the performance of field arrays and FK filters: models, case histories and remedies

John L. Varsek and Rod Morris

Not generally appreciated at first glance, but nonetheless crucial to understanding the recording and imaging of reflections, is the linkage between acquisition arrays and fk filters. 

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November 1993

Magnetic Tape “Stiction” Problem

Norman R. Pascal

At the November 1991 SEG Convention, Memorex Computer Supplies, a major manufacturer of magnetic tape; presented a white paper titled "Understanding Magnetic Tape Stiction and its Solutions" and reiterated this theme at a seminar held in Calgary on November 4, 1992. Other tape manufacturers currently distribute literature on the same…

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November 1993

S.E.G. Gold and Silver Certificate Recipients

At the CSEG Luncheon meeting held September 16, 1993, First Vice President Gary Taylor made the following presentations: Gold Certificate Peter I. Bediz for 50 years membership in the SEG. Silver Certificates - Roy F. Bjornson, David C. Caldwell, D.K. Bruce Fenwick, William E. Glenn, Charles R. Grigg, Emmanual Malterre,…

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October 1993

Synthetic Study to Estimate Errors in Wavelet Estimates and Distortions Introduced by Them in Velocity Inversion

Sudhir Jain

It is highly unlikely that the actual propagating wavelet for a seismic trace can be estimated precisely since the seismic data as well as the sonic and density logs are plagued with numerous imperfections, and the source-wavelet is altered in an undefined way by imperfect elasticity of the transmitting medium,…

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October 1993

Seismic Computing

Roy O. Lindseth

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September 1993

Environmental Geophysics - Fad or Future?

Dr. Phillip Romig

This lecture is one of 14 to be presented between September and January by Dr. Phillip Romig) head of the Department of Geophysics at the Colorado School of Mines since 1983.

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September 1993

1993 CSEG Convention

Dan Hampson

The 1993 CSEG Convention was clearly a success. Many factors contributed to that success. The Convention Committee would like to take credit for them all, but modesty forces us to admit that we had nothing much to do with the tremendous upsurge in optimism and enthusiasm that just happens to…

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September 1993

Canadian Geophysical Union Scientific Meeting

J. B. Merriam

Following a very successful joint meeting with the AGU In Montreal in 1993, the Canadian Geophysical Union returned to its regular venue at Banff, Alberta, in 1993. One hundred and forty-two papers were presented in 16 sessions.

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September 1993

Geophysics at the U of S

Don Gendzwill

We have a new building which the department has occupied since 1986. The old geophysics “shack” is only a memory. For recent graduates, this is old news, but some of the older alumni may not have seen the new building. It is very nice, occupying a space on the edge…

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June 1993

Multidisciplinary Research at the Pacific Geoscience Centre

Melvyn E. Best

The Pacific Geoscience Centre (PGC), located in Sidney, B.C., is a division of the Geological Survey of Canada. PGC’s research effort is focussed on 4 areas or themes: (1) margin tectonics (2) earthquake studies (3) coastal and near shore studies and (4) Cordilleran geophysical studies.

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June 1993

The Canadian Geoscience Council – Science on the Move

John F. Gartner

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