Colombian Section

Bogota, Colombia

Date Established: 20 June 1967

Chairperson

Mr Cesar A Patino, Ecopetrol SA

Membership Chairperson

Mr. Yeisson Camilo Diaz Nino

Program Chairperson

Ernesto Duran Badovinac, Occidental de Colombia Inc.

Secretary

Mr Juan P Uribe

Treasurer

Mr. Manfred Martin, Schlumberger Surenco S.A.

Director

Mr Cesar A Patino, Ecopetrol SA

Officer

Mr. Sergio Pinilla, Weatherford

Mentor Chairperson

Mr. Sergio Pinilla, Weatherford

Staff Liaison

Ursula Blum, Society of Petroleum Engineers

Staff Liaison

Erin O'Sullivan, Society of Petroleum Engineers