Evolution of knowledge on the coquina-reservoir of the Lagoa Feia Formation in the Badejo-Linguado-Pampo Trend, Campos Basin

Abstract

An analysis of the evolution of the knowledge about the coquina-reservoir of the Lagoa Feia Formation is presented, based on five publications about the development geology of the Badejo, Linguado and Pampo oilfields in the Campos Basin. The calcirudite reservoir is a single accumulation, where structural, stratigraphical and mainly diagenetic trapping conditions are recognized. Antithetic faults from the precursor post-basalt rift stage were important in controlling the coquina sedimentation, promoting growth of the low block section. After the coquina deposition, the faults also favor unconformity-related meteoric water circulation, which access the reservoir and promote secondary porosity development. The understanding this complex oil accumulations is essential to support enhanced recovery projects in the coquina reservoir.