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Tru-Gas mud logging instruments are manufactured using the finest components available to provide an exacting standard of mud gas analysis.

Our Mission

It is our desire to provide mud logging instrumentation of high reliability to the mud logging and oil and gas industry.

Company Profile

Tru-Gas is a part of Riley Geological Consultants, Inc. located in Slaton, TX. with a 15,000 sq ft research and development center located in Posey, TX. All products are manufactured in the center at Posey.

Mr. Bob Thrasher has been in the business of providing mud logging instruments to the industry since 1971. Designing and manufacturing instrumentation for 4 different Mud logging companies. Producing over 200 sets of mud logging instruments most of which are in use today across the United States and Mexico.

We have the ability to provide you with a standard Tru-Gas system ready to set in your logging trailer. Or to provide custom designs to suit your needs.

The Tru-Gas System has proven it self to be of extreme high reliability requiring little or no service. It is easy to calibrate to the operators standard.

The Tru-Gas System is ready to be tied in with a computer system of your choice and we recommend the MainLog1  logging software for your mud logging system and can provide you a turnkey system for you consisting of the Tru-Gas System, a complete computer system, MainLog1 software with all interfacing. As well as communication systems to move your mud log from the well to your web site or customer.

1. MainLog is a product of Mr. David Fuller

Contact Information


Postal address
Slaton, TX
Electronic mail
General Information: Info@Tru-Gas.com
Customer Support:
Webmaster: Bob@RileyGeo.com


Send mail to Bob@RileyGeo.com with questions or comments about this web site.
Copyright 2006 Riley Geological Consultants, Inc.
Last modified: 10/08/06