Reservoir Management

Financial Decisions

Geological Evaluation and Reservoir Characterization


Technical Representation

Client List

Upcoming Events

2021 Waterflood Courses

April 26-30, 2021
Midland College Petroleum Professional Development Center
(Midland College PPDC - Technical - Engineering)

October 11-15, 2021
Houston Post Oak Hilton
Houston, Texas


12770 Coit Road
Suite 907
Dallas, Texas 75251
Office 972.385.0354
Fax 972.788.5165

Technical Team - Frank J. "Deacon" Marek

Frank J. "Deacon" Marek is Technical Advisor / Senior Vice President at William M. Cobb & Associates, Inc. (Cobb & Associates). He has over 39 years of industry experience with a focus on reservoir engineering and field studies. He has been a consulting reservoir engineer since joining William M. Cobb & Associates, Inc. in 1985.

At Cobb & Associates, Deacon has performed oil and gas reserve studies and field studies for independent, major and national oil companies. Various types of studies include year-end reserve studies, acquisition/divestiture analysis, litigation and regulatory support, and enhanced recovery studies. Waterflood feasibility and optimization studies have become a specialty of Deacon’s. He has conducted more than 130 waterflood workshops in recent years, assisting clients in quickly identifying and quantifying the waterflood potential of their oil properties. Deacon has also conducted numerous field-wide waterflood studies for domestic and international projects.

Deacon also has considerable experience with producing oil and gas properties in the Gulf of Mexico, on the shelf and in deep water. He has assisted several clients with well permitting issues, specifically with worse case discharge (WCD) calculations required by the Bureau of Ocean Energy Management.

Deacon is a member of the Society of Petroleum Engineers (SPE) and the Society of Petroleum Evaluation Engineers (SPEE). He has served as Chairman of the Dallas section of both organizations, and he was General Chairman of SPE’s Hydrocarbon Economics and Evaluation Symposium in 1999. Deacon has received SPE’s Section and Regional Service Awards, and he was SPE Dallas Section Outstanding Engineer in 2005.

Deacon is a registered professional engineer in the state of Texas.


B.S., Petroleum Engineering
Texas A&M University, May 1977

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