The Talara field, onshore Peru, is one of the oldest oilfields in the world. It was discovered in late 19th century and up to 2010 more than 12,000 wells have been drilled. Currently, only some 3,000 wells are active; the remaining ones have been temporarily or permanently abandoned due to low production.

Recently, a new pay zone was found above the typical producing formation in this field. However, two factors complicate any plans to recomplete the old wells and produce from the new formation. In first place, in the typical well configuration, the production casing in these wells is not cemented to surface and the cement top is below the new zone. Secondly, because the new pay zone is in a low-permeability formation, it must be fractured to be commercially produced. A conventional rig-based workover to recomplete and fracture this upper payzone is too expensive to be economically viable.

This paper presents a new rig less completion technique involving plug and abandonment of the lower zones, followed by cementing, perforating and fracture stimulating the new zone using only coiled tubing for intervention. The technique has proven to be an economically viable way to bring back to life the first 18 wells completed.

Operational details, production results and lessons learned from this first campaign are presented. The analysis demonstrates that this new system can reduce completion time and costs in open-hole wells for both mature and new fields.

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