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About Geodes

Geodes is an interactive, graphical software program for complete analysis and interpretation of geological dip data, including hand-picked and machine-picked dip data from dipmeter tools and borehole imaging tools.

Geodes implements numerous modern, innovative techniques, including SCAT (Statistical Curvature Analysis Techniques; Bengtson, 1981). But that's not all. Geodes goes well beyond SCAT by helping users convert their SCAT analyses into cross sections and structure maps. See Figures 1 and 2, below.

Figure 1.
Figure 1. A pair of orthogonal cross-sections computed by Geodes from wellbore dipmeter data. The section on the left is oriented 185--005 (S05W--N05E); the section on the right, 275--095 (N85W--S85E). The structure in the middle "domain" is an antiform plunging 1 degree toward 275 (N85W). The lines drawn from horizon to horizon are dip isogons. A structure map on the "J87" horizon, computed by Geodes from these sections, is shown in Figure 2, below.

Figure 2
Figure 2. A contour map on the "J87" top, computed by Geodes from the cross sections shown in Figure 1, above. The line of contour truncations running across the lower left corner of the map is the hangingwall cutoff of the "J87" top on the underlying, dip-slip fault.

Why Geodes?

Even great-looking seismic can be misleading. Moreover, many important structural features fall below the resolution of even modern, 3D seismic.

That's why you've spent a small fortune acquiring dipmeter logs and wellbore images, which provide direct, in-hole control on your structure

But what happens away from the wellbore? Tadpole plots only indicate the dip at the wellbore and wellbore images only show the inside of the wellbore. What's worse, tadpole plots can be difficult (or impossible) to interpret; inaccurate; or completely misleading.

With our Geodes software, now you can see what's really down there! Geodes implements several innovative techniques in dipmeter analysis, including SCAT, enabling you to analyze your dipmeter data quickly, accurately, and completely. But that's not all. Geodes also helps you convert the results of your dipmeter analyses to local structure sections and maps, allowing you to see away from, and outside, your wellbore. In short, Geodes delivers CDA--complete dipmeter analysis.

Let Geodes--or our 3D Dip consulting services--help you improve your 3D geologic models, your 3D seismic interpretations, your structure sections and maps, and your drilling results.

Features and Advantages

Our Geodes dip-analysis software enables users to:

In most if not all situations, SCAT (Bengtson, 1980, 1981) is essential for complete dip analysis (Morse and Bengtson, 1988). But Geodes goes well beyond SCAT by enabling users to identify domain boundaries (surfaces across which structural orientation changes abruptly) and determine the dip & azimuth or trend & plunge on a domain-by-domain basis. Geodes helps users recognize and deal with false and missing data, provides several methods for filtering the data, and helps users deal successfully with scattered data. Additionally, Geodes reveals certain kinds of faults that are difficult to pick on seismic or log correlations.

Geodes is particularly helpful in areas of complex structure and/or fair-to-poor seismic. For instance, Geodes has been used with considerable success in the Gulf of Suez (Egypt), which involves a complexly deformed subsalt reservoir (Sercombe et al., 1997). Geodes has been used in extension as well as in compression (Boyer and Morse, 1994) and in wrench terranes. Curiously enough, Geodes is also useful in areas of very subtle structure (Morse and Bengtson, 1989). Geodes has been used in several compressional terranes, including the Alberta Foothills, the Idaho-Wyoming-Utah Thrust Belt, and the Rocky Mountains Foreland Province. Recently, users have been applying Geodes successfully in the subsalt, deepwater Gulf of Mexico.

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