Your Independent Lab For Trusted Results

Your Independent Lab For Trusted Results

About Us

Oilfield Testing and Consulting was founded by Greg Garrison, PH.D and Marlen Garrison in 2011.  They saw an industry need for a true independent cement testing lab and filled the void in the market.  In 2014, they decided expand into independent drilling fluid testing. 

In all, OTC is an independent laboratory specializing in testing of downhole cement and drilling fluids. Our technicians are highly qualified and skilled in following standardized test procedures from API and ISO recommended practices and specifications.

We aim to add value to the oil and gas industry by providing high quality, consistent, and unbiased test results in a timely manner. We collaborate with our clients to identify practical solutions to the costly challenges encountered in their field operations.


Dependable Quality For Trusted Results

We are here to provide our clients with trustworthy and reliable results on a consistent basis. Our API Spec Q1 and ISO 9001:2015 quality certifications indicate the level of consistency and dedication our team has shown to providing high quality test results and services.

State-of-the-art Facilities To Ensure Quality and Integrity

Meet the OTC Family

Greg Garrison, Ph.D & Marlen Garrison


Katrina Price, Operations Manager

Katrina Price

Operations Manager

Holly Hales

Drilling Fluids Manager

Rachel Linares

Drilling Fluids Tech

Wesley Cadriel, Cement Lab Manager

Wesley Cadriel

Cement Lab Manager

Brianna Montelongo

Cement Lab Tech

Lydia Arredondo, Accounting Manager

Lydia Arredondo

Accounting Manager

Lesly Flores, Executive Assistant

Lesly Flores

Executive Assistant