KGS Home General Info Index Page News Releases

News Release, Kansas Geological Survey, Oct. 7, 2003

GEMINI Software Now Available from Survey

LAWRENCE--Newly developed software for characterizing oil reservoirs is now available free from the Kansas Geological Survey, based at the University of Kansas.

The software, designed primarily for small, independent companies and consultants, is called GEMINI (for Geo-Engineering Modeling through Internet Informatics). The software was produced over the past three years by a team of 15 Survey scientists, working in collaboration with eight energy companies. Funding was provided by the U.S. Department of Energy.

The software is in the public domain and is can be accessed at no cost from the KGS web site (at

"Gemini consists of eleven integrated software tools and databases that can be used to evaluate the potential of additional oil and gas recovery from a reservoir," said Survey geologist Lynn Watney. "Users can conduct analyses on one or multiple wells using Gemini modules from the web."

According to Watney, GEMINI creates password-protected virtual reservoir analysis projects to examine core data, calibrate and analyze wireline logs, analyze drill stem tests, calculate oil in place, compare oil-in-place calculations with material-balance calculations, and download results for presentation and further analysis in other software. The software tracks user's progress as an aid in reviewing and revisiting a project. On-line step-by-step "Help" functions aid users as they work on a project.

In addition to analyzing company data, and data from the KGS, GEMINI will eventually have the capability to analyze information from other public sites. GEMINI is also being used to convey results of KGS research, serving as platform for distance learning and technology transfer.

GEMINI's suite of geological and engineering web applications include: 1) modeling using an interactive relational rock catalog; 2) analysis of wireline logs to derive effective hydrocarbon pay and flow units; 3) a well-profile module to display composite views of logs, core, drill stem tests (DST), perforation, and reservoir top and layer information; 4) interactive cross sections to display "marked" wireline logs from well profiles to establish and confirm correlations of the reservoir; 5) gridding and mapping of petrophysical parameters to describe spatial variations of the reservoir; 6) calculation and mapping of reservoir volumetrics (oil- and gas-in-place); 7) material balance calculations; 8) PVT calculator; 9) DST analyst, 10) tutorial and help functions, and 11) an automated program (KHAN, for Kansas Hydrocarbon Association Navigator), which utilizes petrophysical databases to predict hydrocarbon pay or other characteristics as trained by the user.

Links of interest to this article:

Story by Rex Buchanan, (785) 864-2106
For more information, contact Lynn Watney, (785) 864-2184

Kansas Geological Survey, Public Outreach