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P: 303-279-0171 / F: 303-278-0135



Our philosophy is simply this:
ONLY the Best will do…
The Best people…The Best technology…The Best data…
ONLY then can our clients make the essential decisions needed for their project.

pdf-16 DOWNLOAD our Scope of Services Sheet

For nearly three decades, COLOG has been the recognized leader in borehole geophysical and hydrophysical logging services and analysis.

The reason for the reputation they have earned as an industry leader is well founded; COLOG uses only highly trained and experienced field professionals and employs degreed engineers for processing and analysis of the collected data.

This collaboration affords clients the very best in data collection and analysis. This level of competency coupled with unparalleled years of experience, yields superior, dependable results, often along with new approaches to old problems and ever-expanding technology development and cross-utilization.


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New Western Regional Manager Named

Daniel Wothers-O’Neal has been tapped as Colog’s new Western Regional Manager. An employee since 2014, he has comprehensive experience in exploration and production logging methods, geophysical survey design and data analysis, mine site safety operations, underground mine dewatering and mine water supply, geotechnical high wall investigations, mine expansion and mineral production. Operating out of Colog’s Elko Nevada office, he replaces Hannah York in this... read more
Yes! we’ll be there

Yes! we’ll be there

Let us know if you’ll be at the 123rd annaul meeting of the American Exploration and Mining Association on December 4-8, 2017 in Sparks/Reno Nevada. We’ll be in both # 824 – So STOP... read more

Need a CPR or First Aid Class?

Periodically, Colog’s Health and Safety Manager, Catie O’Neil, will host a class for CPR and First Aid certification. We are more than happy to share her knowledge with other individuals or companies. If you have people in need of training or a refresher, give us a call. We’ll let you know when our next class is coming... read more