President

Jeff McNamara is the President of Downhole Technology LLC. Jeff is responsible for the vision, strategy, and overall direction of Downhole Technology. Prior to being named President of Downhole Technology in August 2018, Jeff held a series of executive, operational, and sales roles, which included Vice President, North America for a Silicon Valley software startup company, North American Region Manager for Halliburton, and several technical sales roles spanning 12 countries. He holds a BSc. in Geology from the University of Alberta and an MBA.

Vice President - Finance

Jeff Brown is the Vice President of Finance at Downhole Technology LLC. Prior to joining Downhole, Jeff held the position of Controller for SBA and Schoeller-Bleckmann Sales. Jeff has more than 20 years of experience in the oil and gas industry. He started his career working for Marathon Oil in various departments, including International Accounting, Russia Joint Ventures, and the Domestic Pipeline Group. Jeff subsequently held the position of Accounting Manager for Enichem, a chemical branch of the Italian oil and gas company ENI S.p.A. He also served as Treasurer for the Italy-America Chamber of Commerce in Houston. Jeff has a Bachelor of Business Administration in both Finance and Accounting from Texas A&M University and obtained a Certified Management Accounting designation.

Vice President - Research & Development

Marty Coronado joined Downhole Technology in June 2019 as Vice President-Research and Development. Prior to joining Downhole Technology, he held senior-level leadership positions in engineering, research and project management at Tam International, Hydrawell and Baker Hughes focusing on open-hole and cased-hole completions, intelligent well systems, well intervention, liner systems and sand control. With over 38 years of technology development experience, he has been granted 74 United States patents and authored over 30 industry technical papers and publications. Marty studied mechanical engineering at the University of Washington, and is an active member of the Society of Petroleum Engineers.

Chief Engineer

Evan Davies is the Chief Engineer of Downhole Technology LLC. For 15 years prior to Downhole, Evan was with Halliburton where he held numerous positions and worked on a variety of products including wireline imaging tools, instrumented drilling motors and rotary steerable tools. Prior to joining Halliburton, Evan spent more than 10 years working in a combination of wellsite engineering and research and development roles with Computalog. Evan holds an Engineering Bachelor’s degree in Industrial Systems and Control Systems with a specialization in Computer & Process Engineering from the University of Regina in Canada. Evan is a certified Professional Engineer in Alberta, Canada, and a member of the Society of Petroleum Engineers. Prior to joining Downhole, Evan accrued 7 U.S. patents and 16 international patent applications, all in logging and well drilling, downhole imaging and resistivity. In his current position, Evan has accumulated more than 50 patents and patent applications worldwide on behalf of Downhole Technology.

Human Resources Manager

Sabrina Sierra is the Human Resources Manager at Downhole Technology LLC. Sabrina has over 15 years of Human Resources experience working across the energy and industrial sectors. She brings a wealth of knowledge in Human Resources efficiency, people processes, risk management, employee development, and talent management. Her HR experience is most recently with the Wood Group, in addition to McDermott International, Shaw Group, and Kellogg Brown & Root.