Company History

Geophysical Techniques was originally formed in 1980 by Bruce Meadours to act as a vehicle for development of the proprietary software product, SURFAS®. The name SURFAS® is a U.S. registered trademark and refers to the underlying technology that GTI products are built around. Since 1980, some 1000 licenses of SURFAS® or a derivative of it (GTEDIT, GTGRID) have been distributed. It was originally conceived as an interactive product running on a VAX780. Therefore, there was always a great deal of emphasis placed on speed as well as other interactive issues.

Click on the links below for more information.

1984
SURFAS® was ported to the LANDMARK workstation environment in 1984, the first year LANDMARK shipped systems. This again served to maintain pressure to perform useful mapping at interactive speeds. About 100 licenses were sold by LANDMARK and Cogniseis combined. The surface editor, which formed the foundations for the product GTEDIT, was first added to SURFAS® in 1983. It has been constantly developed over the years into the very robust functions you will find in GTEDIT today.
1991
In 1991 GTI decided to start offering workstation vendors and other software developers access to the components of SURFAS® in the form of tools built for better integration with other packages. This approach has made us quite successful in partnering with major software vendors. Since 1991 GTI has worked co-operatively with EnSoCo, a Houston based navigation company, to develop MOTIF and CGM interfaces. These standard products were used to build GTEDIT. GTGRID was then produced by separating the gridding/contouring routines into a separate set of libraries. Our first success in this effort was a reseller agreement with Precision Visuals of Boulder, Colo. Starting in late 1991, they have sold 450 licenses of GTGRID in their PVWAVE environment. The company is now known as Visual Numerics.
1992
An agreement with STRATAMODEL in 1992 to market a version of GTEDIT called STRATAMAP produced another 50-60 licenses. Paradigm distributed GTGRID as part of their depth conversion process and Scott-Pickford in England used GTGRID in their product line. Another successful partnership was with Interactive Network Technologies (INT) who incorporated gridding and display into a CONTOUR Widget. LANDMARK acquired STRATAMODEL and continued to offer STRATAMAP(tm) as part of it's product line. There were about 300 licenses sold by Landmark through September, 2002.
1999
1999 In January, 1999 DYNAMIC SOLUTIONS,Ltd. of Calgary, Alberta began offering new functionality based on GTGRID libraries. Also using GTGRID as a tool for maintaining large numbers of 2D interpolated functions is Austin GeoModeling, Inc. within their RECON(tm) product. There is an ongoing R&D effort between AGM and GTI to improve GTGRID.

Current Development efforts include support of more types of faults as part of a surface's definition. This includes modelling of ridge lines and other types of discountinuties in the gradients of the surface.

GTGRID is available on UNIX, Linux, and Windows. GTEDIT is currently available on UNIX and LINUX only.

The following companies have used and/or distributed GT software products. Click those that are linked to access their websites.

Thanks to these companies, over a 1,000 copies of GT software have been distributed to end-users in many different environments.