The south-central E&P division of Venezuela's state oil company PDVSA carried out eight major maintenance works in Apure state during 2009, the company said in a statement.
The works were focused on the Guafita and La Victoria fields.
Maintenance included the replacement of "critical stretches" of the La Victoria-Guafita-Patio de Tanques Silvestre pipeline, as well as other piping.
The company also made general improvements to the fluid management tanks in the Flujo Guafita station as well as turbines on the La Victoria field.
PDVSA contracted private firms for three of the maintenance projects.