Knowledge / Skill / Experience

Our People

C.H. Scott Rees III
Chairman and Chief Executive Officer
Since joining NSAI in 1988, Scott has been involved in hundreds of projects both domestically and around the world, including Russia, Latin America, Mexico, North Sea, Australia, and West Africa. He was promoted to President in 2002 and CEO in 2008. He is actively involved in all aspects of the business, including the application/interpretation of industry reserves definitions and guidelines.
Danny D. Simmons
President and Chief Operating Officer
Danny joined NSAI in 1976. In 1992, when the company decided to open a Houston office to be in the center of the oil and gas industry, he was tagged to manage that office. Danny was promoted to President in 2008. He continues to manage the ever-expanding list of clients from the Houston office while also providing guidance on the day-to-day operations of the company.

NSAI specializes in projects encompassing multiple disciplines. Our technical staff includes reservoir and operations engineers, petrophysicists, and geoscientists who are generally cross-trained in geology and geophysics. We also employ staff specializing in geologic modeling, reservoir simulations, complex computer mapping, and non-routine time-to-depth conversion. We apply the right combination of people, expertise, and technology to each assignment.

Our present organization consists of approximately 60 reservoir engineers, geoscientists, and petrophysicists; 80 engineering and geologic analysts; 15 associate engineers and geoscientists as needed for special expertise; and additional support staff. Our technical staff is carefully recruited from the industry’s most qualified candidates. The average experience level of these individuals exceeds 20 years, including 5 to 15 years with a major oil company. Most of our engineers, geoscientists, and petrophysicists obtained their initial training and experience with BP, British Gas, Chevron, ConocoPhillips, or ExxonMobil. We recruit only those with the right combination of academic excellence, sound judgment, intuitive skills, relevant experience, and an understanding of the critical relationship that exists between the petroleum and financial industries.

Members of our technical staff are listed below, along with brief bios and contact information.


C.H. (Scott) Rees III Dallas Chairman and Chief Executive Officer
Danny D. Simmons Houston President and Chief Operating Officer
G. Lance Binder Dallas Executive Vice President
Craig H. Adams Dallas Senior Vice President
Robert C. Barg Dallas Senior Vice President / Executive Committee
P. Scott Frost Dallas Senior Vice President / CFO / Executive Committee
Randolph K. Green Dallas Senior Vice President
John G. Hattner Dallas Senior Vice President / Executive Committee
J. Carter Henson, Jr. Houston Senior Vice President / Executive Committee
Kara Sue Logan Dallas Senior Vice President
Derek F. Newton Houston Senior Vice President
Mike K. Norton Houston Senior Vice President / Executive Committee
Dan Paul Smith Dallas Senior Vice President / Executive Committee
Joseph J. Spellman Dallas Senior Vice President / Executive Committee
Richard B. Talley, Jr. Houston Senior Vice President
Daniel T. Walker Dallas Senior Vice President / Executive Committee

Our staff of petroleum analysts are integral to each evaluation, working closely with the engineers and geoscientists and with our clients. They generally have 3 to 15 years experience and have degrees in mathematics, computer science, geology, or business. They have diverse skills in data loading, database management, economic modeling, spreadsheet manipulation, computer mapping, well log processing, and report preparation. Listed below are our Engineering and Geology Analyst Coordinators:

Amy H. Arnold Dallas Contact
Dina S. Blair Dallas Contact
Jake S. Bontrager Dallas Contact
Nicholas A. Brown Houston Contact
Kyle W. Caldwell Dallas Contact
Diana E. Castillo Houston Contact
Ely A. Dlugos Dallas Contact
Karin T. Fox Dallas Contact
Lisa R. Green Houston Contact
Maddie B. Gulick Dallas Contact
Alayna M. Hoenig Dallas Contact
Andrew J. Karpiel Dallas Contact
Shannon R. Mapes Houston Contact
Heather R. Maresh Houston Contact
Cristie L. Moss Dallas Contact
Steve A. Oliveira Houston Contact
Julie C. Oliver Dallas Contact
Dawn S. Smith Dallas Contact
Michael S. Strohmann Houston Contact
Michelle M. Walts Dallas Contact
Melanie D. Ybarra Dallas Contact