Oil & Gas Reserves Committee

The Oil and Gas Reserve Commitee (OGRC) includes SPE members who are degreed engineers and geoscientists with at least 10 years experience in reserves and resources estimation. Additionally, other organizations may provide OGRC observers. These observers serve as liaisons between the OGRC and the respective organization on reserves and resources matters. Observers are typically highly-experienced members of similar technical societies. For more information, see the governance document (pdf).


  • The committee will be responsible for programs dealing with oil and gas reserves and resources matters, including reserves and resources definitions, terms, recommended practices, and standards;
  • The committee will disseminate reserves and resources information to other organizations, agencies, and companies involved in reserves matters, including cooperation with other committees and organizations in development and delivery of relevant training courses;


Bernard Seiller, Chairman
Total SA

Tom Blasingame                 
Texas A&M University

Avijit Chakravarty                 
Chevron ETC

Daniel Diluzio                         
Shell International Ltd.

John Etherington                     
PRA International Ltd.

Kenneth Frederick                
ExxonMobil Development Co. 

Robert Harrison                 
Senergy Ltd.

John Lee                                 
Texas A&M University


Priscila Moczydlower         

Enrique Morales                 
SGS Horizon

Mark Nieberding                 
BP America Producing Co.

Barbara Pribyl                         
Santos Petroleum Management

Aquiles Rattia                         
Repsol S.A.

Oscar Xochipa-Lopez         

Hua Yang                                 

Elliott Young                         
BHP Billiton Petroleum 


Kenneth Mallon                
Petroleum Geology Consultant

Robert Garnett                        

Eric Von Lunen                        
Nexen Inc.


Ronald Harrell                        
Ryder Scott Company LP

Anibal Martinez                

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