Courtney Stephens
Kimberly Ayers, C.M.A.
Dwayne Stewart, MBA, P.E.
Garrett Gremillion
Thad Toups, P.E.
Zach Quintanilla
John Ferrell
Ben Heinzelmann
Richard Scherer
Matthew T. Scott, P.E.
Dwayne Purvis, P.E.
Jim Tague
Marylena Garcia, P.E.
Training and placing reservoir engineering technicians across the industry.
Founder and CEO of QED Energy Associates, a Houston-based firm specializing in training and placing reservoir engineering technicians.

Haas & Cobb Petroleum Consultants
Haas & Cobb is a professional engineering and geology consulting firm based in Dallas, serving the global oil and gas industry. Their mission is to help clients make the most of their resources through data-driven, transparent, and efficient consulting.
Recognized Expertise, Modern Approach
PHDwin Week
Haas & Cobb: Born from the merger of two renowned firms — Haas Engineering (est. 1980) and W.M. Cobb & Associates (est. 1983) — Haas & Cobb’s team of professional engineers and geologists offers a full range of reservoir description and engineering services
Thad is manager and partner of Haas & Cobb Petroleum Consultants and recently started his 21st year in the legacy engineering firm. Thad is a Chemical Engineer from Texas A&M, a licensed professional engineer in TX and WY, and a husband and father to 3 spoiled kids. His main role at work and at home is to make sure his clients are receiving the highest standards of excellence.
Engineering Services Including:
Independent Reserves Reports and Audit Reports
Subsurface Modeling
Reservoir Simulation
Enhanced Recovery and Waterflooding
Gas Storage and CCUS
Mineral Rich Brine Recovery
Technical Courses and Training
& Expert Witness Testimony
Haas & Cobb Petroleum Consultants is deeply committed to client innovation by continuously improving how it manages and evaluates subsurface energy resources. Through advanced petroleum engineering and geological consulting practices, data-driven reserve reporting and auditing, and modernized reservoir simulation and CCUS (carbon capture, utilization, and storage) strategies, Haas & Cobb ensures that assets are leveraged efficiently and transparently. By integrating cutting‑edge technology, regulatory foresight, and independent verification, the firm delivers forward‑thinking solutions that benefit both clients and stakeholders — ensuring responsible resource development and long‑term value.