TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractPetroleum field exploitation on deep-water environment requires well completion strategy that minimizes the number of workover operations and provides an efficient reservoir data acquisition system to support field management decisions. This paper presents a Petrobras field experience in integrating monitoring data into reservoir management optimization on Campos Basin, Brazil. The field development plan comprised satellite wells completed with wet-Xmas tree and producing with independent flowlines to a FPSO. To ensure an adequate monitoring data program 1 , all wells were equipped with permanent temperature and pressure sensors at downhole (PDG), wet-Xmas tree and production header. The anticipated production program generated a huge highfrequency database during the initial field development plan implementation. Additional time-lapse data obtained from new drilled wells during field development increased reservoir knowledge about reservoir depletion, compartmentalization, barriers, waterflood efficiency, etc. Until nowadays data from PDG and time-lapse data allow frequent updates of the geological and reservoir flow model, reducing the project uncertainties. The challenge is to incorporate these data into reservoir management optimization at the right time without loosing the economic opportunity window. The strategy adopted has been considered efficient to face the preeminent decision making required by this type of reservoir in a deep-water field under anticipated production.