Cochabamba-Arica Oil Pipeline

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Cochabamba-Arica Oil Pipeline (also known as Oleoducto Sica Sica-Arica or OSSA-2) is an operating oil pipeline running from Cochabamba, Bolivia to Arica, Chile. The pipeline connects to the Santa Cruz-Cochabamba Oil Pipeline.

Location

The pipeline starts in Cochabamba, Bolivia and runs to Arica, Chile passing through pumping stations in Sayari, Bolivia and Sica Sica, Bolivia.

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Project Details

• Operator: YPFB Transporte SA
• Owner: YPFB Transporte SA
• Parent company: Yacimientos Petrolíferos Fiscales Bolivianos (YPFB) 98.55%, Others 1.44%
• Capacity: 24,000 bpd
• Length: 577 km
• Diameter: 8.625 inches, 10.75 inches, 12.75 inches
• Status: Operating
• Start Year: 1966
• Cost:
• Financing:

Background

The pipeline, announced in 1964, was originally designed to transport oil from Bolivia's Caranda oil field to Arica, Chile for export.

In 2024, with Bolivian production in decline, plans were announced to reverse the pipeline's flow to facilitate the transport of crude oil imports into Bolivia. As of January 2026, Bolivian and Chilean government officials were still actively discussing the flow reversal project (known locally as Proyecto Reversa Ossa II Arica Charaña), along with other planned improvements to the pipeline; however, the exact timetable for the project remained unclear.