Wednesday, April 30, 2008

Ever get that sinking feeling . . .

. . . that your logging-company rep doesn't really know SCAT?

We often run into situations in which a logging company (or a consultant or a consulting company) has agreed to generate SCAT Plots for a client, but only after the client asks about SCAT Plots first. This has always struck us as rather weird: why would a client want to rely on the services of a firm that didn't think to mention SCAT Plots from the get-go? Would you use a medical office if you had to ask them to take your blood pressure?

People who really know and understand SCAT aren't going to mention it as an afterthought. And they're not going to wait for a client to ask them about it. If they really know and understand SCAT, it's going to be the first thing they think of when a client mentions geological dip data--it's going to be "top of mind". If a logging-company rep or a consultant discusses dip data with you without bringing up SCAT early in the conversation, chances are pretty good that he or she doesn't really know and understand SCAT.

At Computational Geology, we've been doing SCAT-based analysis and interpretation of geological dip data for over twenty years. As I pointed out in an earlier post,

From Day #1 it has been our philosophy that SCAT is essential for complete, accurate analysis of dip data--from borehole images as well as conventional dipmeter curves, from hand-picked data as well as machine-picked data.

In short, SCAT is essential for complete, accurate analysis of dip data. But there's more to SCAT than just SCAT Plots, which will be the subject of a future post.

Tuesday, April 29, 2008

We Really Know Our SCAT!

Last month, Computational Geology ("CG") began its 18th year of service to the E&P industry. For a few years prior to that, Deformation, Inc., the predecessor to CG, provided SCAT analysis services to the industry. In short, at CG we've been doing SCAT analysis for well over 20 years.

When CG introduced the first version of Geodes in 1990, it was one of the very first commercial software packages to incorporate SCAT (if not the first). From Day #1 it has been our philosophy that SCAT is essential for complete, accurate analysis of dip data--from borehole images as well as conventional dipmeter curves, from hand-picked data as well as machine-picked data.

With Andy Bengtson, the inventor of SCAT, we've given oral and poster presentations at AAPG meetings on "What is wrong with tadpole plots?" (Morse and Bengtson, 1988), "No dip or low dip?" (Morse and Bengtson, 1989), and "SCAT dipmeter rules for interpretation of thrust belt kink-fold and detachment structures" (Bengtson and Morse, 1990). (Full citations for these references can be found here.)

As we implemented SCAT in our Geodes program, we introduced novel extensions to SCAT, as described in "Extending SCAT: additional techniques for identifying domain boundaries and determining how azimuth frequency distribution varies with depth" (Morse and Goldberg, 1990a). Within Geodes, we integrated SCAT with isogon-based cross sections to enable users and managers to see What's Really Down There*. (See "GEODES: An interactive, SCAT-based program for complete structural interpretation of dip data" [Morse and Goldberg, 1990b].) To further enable users and managers to see What's Really Down There*, we added to Geodes the ability to convert isogon-based cross sections to local structure maps. Thus, Geodes goes far Beyond SCAT*.

Most recently, we presented "Re-interpretation of the north flank of the Qarun Field (Western Desert, Egypt), based on SCAT analysis and reprocessing of the A-17 dipmeter data" at the November 2007 AAPG meeting in Athens (see here and here), a case history describing how we used SCAT and Geodes to identify and correct serious problems with a set of machine-picked dip data from a key well in the steep flank of Qarun Field.

Our licensees are using Geodes around the world, from the subsalt Gulf of Suez, Egypt (Sercombe and others, 1997), to the subsalt / deepwater Gulf of Mexico, to the Canadian Foothills.

Through our Geodes-based 3D Dip* services, Computational Geology also provides Geodes analyses on a consulting basis. Over the years, we've provided Geodes analyses:
  • To small, mid-sized, and large companies alike;

  • In both extensional and compressional terranes; and

  • In both simple and complex structural settings, especially where seismic is fair or poor (e.g., below salt and beneath major faults and unconformities) and where important structural elements (e.g., faults) fall below the limits of seismic resolution.
If you choose CG as your supplier of dip-analysis software and consulting services, you'll be partnering with a firm that has been working with SCAT for over 20 years, a firm that recognized from the get-go that SCAT is essential for accurate, complete analysis of geological dip data, a firm that has been active in extending SCAT and converting SCAT results to cross sections and structure maps, and a firm that has been applying all these techniques around the world to all kinds of structural problems in all kinds of geological settings.

We Really Know Our SCAT* and with that knowledge we'll help you to see What's Really Down There*.

* 3D Dip, Beyond SCAT, We Really Know Our SCAT, What's Really Down There, and Geodes are Marks and Trademarks of Computational Geology, Inc.

Geodes Users Group ("GUG")

The Geodes Users Group ("GUG") provides Geodes users with a forum for asking questions they think might be of interest to the entire user group and for exchanging tips, case histories, and ideas.

Additionally, the GUG is a place for users to suggest new features and for the community to weigh in on whether the suggested features are of general interest.

Finally, the GUG provides a means for Computational Geology ("CG") to keep users informed of happenings at CG--new releases, new features, new applications, and so forth.

If you are interested in participating in the GUG and if you are a licensed Geodes user, send us an email at

First things first!

What's the first step in analyzing a dip log--from either a conventional dipmeter tool or a borehole imaging tool?

Feel free to submit your answers in the "Comments" section. I'll supply my answer next week.

Update (2008-05-09): the answer is posted here.