Grapevine

Gulf of Mexico Sub-salt Interpretation Underway

LCT, Inc., in conjunction with GecoPrakla, TGS-CALIBRE, Sidney Schafer and Associates, and Geophysical Development Corporation, is currently undertaking a nonexclusive interpretation analysis of the Southern Addition, offshore Louisiana, utilizing advanced interpretation methodologies and multiple data types. LCT's team of geophysicists are working closely with all participants, which include several major oil companies. Products and reports should be available shortly.

For additional information please contact John Bain or Brian Anderson of LCT, Inc. (713) 558-8383.

CGU Annual Meeting – 1993

The CGU annual meeting for 1993 was held at the Banff Conference Centre May 69. With over 160 participants from different specializations in geophysics and 142 papers presented in sixteen technical sessions, the level of interest in Canadian geophysics is clearly very high.

The CGU's 1993 Wilson award went to Professor Alan Beck of the University of Western Ontario for his outstanding contributions to geophysics in Canada.

The CGU's best student paper award ($500) went to Kevin Shook (with D.M. Gray) of the University of Saskatchewan for "Geometry of Prairie Snowcovers". W. Sean Guest (with J.M. Kendall) from Queen's University won the Chevron award ($500) for "Modelling Seismic Waveforms in 3D Inhomogeneous Anisotropic Media: Application of Maslov Asymptotic Theory". Nong Wu (with lR. Booker and J.T. Smith) of the University of Washington won the $500 prize in the Shell poster competition for "Constrained Rapid Relaxation Inversion of Magnetotelluric Data".

The 1994 CGU Meeting is planned for the Rimrock Resort Hotel in Banff from May 14-17, to be followed by an all-day field trip to the Columbia Icefields on the 18th. All CGU members and other geophysicists are cordially invited.

Lithoprobe Funded for Next Five Years

The Natural Sciences and Engineering Research Council (NSERC) has agreed to continue funding Lithoprobe, the largest multidisciplinary collaborative earth science program ever undertaken in Canada. Lithoprobe will receive $4.5 million for each of the next two years, and $4 million annually for the following three. This allocation represents about half of the annual expenditures by Lithoprobe, the remainder coming from industry, provincial agencies and the Geological Survey of Canada. Industrial support for Lithoprobe is very strong and indicates the relevance of the program's output to industrial objectives. The $1.6 million contributed by the GSC supports the large number of its scientists who have programs in Lithoprobe.

New Venture for Pulsonic

The newest Pulsonic venture is Pulsonic Computer Systems. The mission of this new division is to sell computer systems and 3rd party peripherals, with a focus on customer service.

The system solutions will include computer systems, networking products, disk sub-systems, tape sub-systems, and optical storage.

The support services will include system and 3rd party maintenance, T/M service, installations and integration. PSC will provide on-site maintenance contracts or support centre contracts. Other services offered will be networking, consulting, training, and UNIX system administration support.

LCTSeisTM Available to Explorationists

LCT, Inc. announces the release of LCTSeisTM, a powerful extension to its 2D gravity and magnetic modelling program 2MODTM . LCTSeisTM enables an interpreter to model potential fields data in immediate combination with seismic data. With LCTSeisTM, a cross sectional earth model can be displayed alongside a seismic image time-section allowing edits to be made simultaneously in both depth and time. Updates are visible in real-time on both views using a user-definable time-depth relationship. This new option provides the user with tools for integrated, multi-disciplinary interpretations.

For additional information please contact John Bain or Paul Raab of LCT, Inc. (713) 558-8383.

Joint CSPG/CWLS Symposium

The Canadian Society of Petroleum Geologists (CSPG) and the Canadian Well Logging Society (CWLS) will be holding a joint symposium May 28-31, 1995.

The previously announced theme has been changed from "The Habitat of Subsurface Fluids" to the following: "EXPLORATION, EVALUATION & EXPLOITATION – 1995" ... the Economic Integration of Geology and Formation Evaluation.

For further information regarding this symposium, please contact Mr. Glenn W. Gray, Publicity Chairman, or Mr. Glynn Wright, Chairman, 1995 CSPG/CWLS Joint Symposium, c/o CSPG, 50S, 206 7th Avenue S.W., Calgary, Alberta, T2P OW7

XRAYMIN – Minerals Data Base With X-Ray Diffraction Lines

XRAYMIN is a database of 1124 mineral names with their three strongest diffraction lines. The File Number assigned by the Joint Committee on Powder Diffraction Standards is also included in the database. The names and diffraction data come from the JCPDS 1974 and 1980 Publications-Selected Powder Diffraction Data for Minerals.

The software will run on IBM PC and compatibles. For more information contact Gibbs Associates, Boulder Colorado, (303) 444-6032.

Earth Science Software Information Available on Robertson's Info-data online

Gubbs Associates has made an agreement with Robertson Info-Data to offer several publications on-line on their IDOL bulletin board system.

For more information about the IDOL bbs contact Robertson Info-Data, Suite 902, 580 Hornby Street, Vancouver, B.C., V6C 3B6, or call (604)683-2037, Fax: (604)6814166/( 604)687-5532, or Data line: (604) 684-6577.

Joint EAEG/SEG Summer Workshop

The European Association of Exploration Geophysicists (EAEG) and the Society of Exploration Geophysicists (SEG) are holding a joint summer workshop, July 24-27, 1994 in Noordwijkerhout, The Netherlands, on Construction of 3D Macro Velocity-Depth Models.

The workshop will comprise six half-day sessions, each on a specific aspect of the main theme. A session will comprise eight papers each with a time limit of IS minutes, followed by a discussion period of an hour and a half. During the discussion period, participants are encouraged to share their own experience by presenting aspects of case histories relevant to each specific topic. The technical programme will comprise papers divided into the following sessions:

Estimation of Layer Velocities: Ray tracing and prestack traveltime inversion

Estimation of Reflector Geometries: 3D Poststack depth migration, 3D map migration and interpretation of 3D depth horizons.

3D Prestack Depth Migration: Use of image gathers and stacks of image gathers to update layer velocities and reflector geometries.

3D Model Representation: Representation of layer boundaries by triangulation, and gridding and tessellation of layers by tetrahedra.

3D Model Visualization: Interactive graphics technology for viewing and editing solid models, layer velocities and reflector geometries.

3D Wave Field Modelling: Zero-offset acoustic modelling of a 3D volume of stacked data, and nonzero-offset acoustic modelling of shot records with 3D recording geometries for typical 3D structural targets associated with overthrust and salt tectonics.

Panel Discussion on the Workshop: Computer and graphics technologies required to implement the components of a 3D structural inversion toolkit – traveltime inversion, post- and prestack depth migration, model representation and visualization, and 3D wave field modelling.

The workshop programme will start at 0830 hours on Sunday, July 24, 1994 and end at 1500 hours on Wednesday, July 27, 1994. Attendance to the workshop will be limited to 150, hence early application is strongly advised. Registration forms will be available from Oz Yilmaz, Chairman, EAEG/SEG 1994 Summer Workshop, EAEG Business Office, PO Box 298, 3700 AG Zeist, The Netherlands or call 31 3404 56997.

LCT, Geco-Prakla Begin Non-exclusive Survey in Ship Shoal

Geco-Prakla, Inc. and LCT, Inc. are currently undertaking a non-exclusive high resolution gravity survey in the Gulf of Mexico Ship Shoal area, in conjunction with Geco-Prakla's 3-D seismic program over this 82 OCS Block area. This survey is specifically designed to image data in the subsalt trend. The gravity survey will provide oil companies with additional tools to evaluate this subsalt trend. The ship track line spacing for the gravity survey is 240 meters. The area consists of a combination of open blocks, primary term, and producing properties. Data samples are currently available for evaluation.

For additional information please contact John Bain or Brian Anderson of LCT, Inc. at (713) 558-8383.