Board of Directors

Ryder Scott’s Board of Directors provides the experience and knowledge that position the company as a leader in worldwide independent oil and gas evaluation. Ryder Scott follows that leadership in continuing to provide world-class services for each client into the 21st century.

Executive Committee

DON P. ROESLE
Chief Executive Officer
Petroleum engineer since 1973. Joined Ryder Scott Company in 1975. Before joining Ryder Scott, he served as a reservoir engineer with Tenneco Oil Co.B.S. and M.S. degrees, petroleum engineering, University of Texas. Honorary Fraternities: Tau Beta Pi and Pi Epsilon Tau. Member, SPE. Registered professional engineer, State of Texas.
DEAN RIETZ
President
Petroleum engineer since 1984. Joined Ryder Scott in 1995 as a petroleum engineer specializing in reservoir modeling. Became manager of the then new simulation group in 1998. Previously worked at Intera Technologies Inc. and H. J. Gruy and Assocs. Began career at Chevron Corp. as a petroleum engineer.BS degree in petroleum engineering, University of Oklahoma.MS degree, petroleum engineering, University of Houston. Member of SPE, Tau Beta Pi and Pi Epsilon Tau honorary engineering societies. Registered professional engineer in Texas.
RAMIREZ GUALE RAMIREZ
Executive Vice President
Petroleum engineer since 1976. Joined Ryder Scott in 1981 as a petroleum engineer. Previously, worked as a petroleum engineer at Natomas North America and Sun Production Co. where he began his career.BS degree in mechanical engineering, Texas A&M University. Member of SPE, SPWLA. Registered professional engineer in Texas.

Top of Page

Board of Directors – Members

HERMAN ACUNA
Managing Senior Vice President
Petroleum engineer since 1987. Before joining Ryder Scott, Acuña worked at Exxon Corp. for nine years as a petroleum engineer in reservoir simulation R&D and later in reservoir modeling for depletion strategies, field development and production optimization. Began career in 1988 as a petroleum engineer at a Tulsa, OK, consulting firm.BS and MS degrees in petroleum engineering, University of Tulsa. Member of Society of Petroleum Engineers and Association of International Petroleum Negotiators. Registered professional engineer in the state of Texas.
GEORGE F. DAMES
Managing Senior Vice President
Geoscience/Geologist since 1975. Joined Ryder Scott in 1993 as a petroleum geologist after working as a consultant for two years. Before that, Dames was an exploration geologist at Wagner and Brown from 1985 to 1991. He began his career as a geologist at Southern Natural Gas Co. in 1975 where he worked for four years before joining Texasgulf Oil and Gas Co. After that, Dames was a geology manager at Texas General Petroleum Co. and later joined Andress Petroleum.BA degree in geology from Rice University. Registered Professional Geologist in the State of Texas.
 larry.connor LARRY P. CONNOR
Managing Senior Vice President
Petroleum engineer since 1977.  Joined Ryder Scott in 1981.  Began career at Amoco Production Co. as a reservoir engineer in operations where he evaluated proposals for drilling, including infills, recompletions and well stimulations.  At Ryder Scott, evaluated conventional and unconventional reservoirs globally.  Served as manager of the Calgary office and group leader in Houston.  BS degree in industrial engineering, Texas A&M University.  Registered Professional Engineer in the State of Texas and with APEGA in Canada.
 daniel.olds DANIEL R. OLDS
Managing Senior Vice President
Petroleum engineer since 1981.  Joined Ryder Scott in 2001.  Began career at Wintershall Energy as a manager of engineering and acquisitions.  Evaluated on- and offshore producing fields in most of the major basins in the U.S. while there.  Joined PriceWaterhousCoopers LLP as manager of a consulting group providing engineering and evaluation expertise internally and to clients.  BS degree in petroleum engineering, West Virginia University.  MBA degree, University of Houston.  Registered Professional Engineer in the State of Texas.

Top of Page