Empresas O&G: Gran Tierra Energy Colombia Ltd

DELRIO S.A.S

APPLUS NORCONTROL COLOMBIA LTDA

PARKO SERVICES S.A

Summum Projects S.A.S

FEPCO ZONA FRANCA SAS

ESTRELLA INTERNATIONAL ENERGY SERVICES SUCURSAL COLOMBIA

RODATECH SAS

PCM Colombia SAS

CALDIC COLOMBIA S.A.

Piedemonte Oil Services S.A.S.