Production development in the Orinoco Oil Belt started with data gathering programs that included high resolution 3D. Although the acquired seismic information was considered of good to very good quality, it was not enough to provide the details needed to maximize the amount of sand contacted through horizontal drilling.

The complexity of the reservoir architecture required additional control data to allow the operator to position the well in targets suitable to support the economic of the project. Additional drilling, in the form of stratigraphical (vertical and/or slanted) and observation wells, plus coring programs, well seismic and rock sampling provided the input for an appropriate reservoir description.

Once model integrating such data were produced, geostatistical manipulation allowed the estimate of ranges of oil in place, sand body typing, aquifer distribution and so forth. This effort clearly impacted the development programs by suggesting changes to multilateral geometry, pad configuration, draining point location and well spacing.

This paper will focus on how should the above mentioned topics to optimize the field performance be linked and still achieve the economic goals for everyone defined in the projects.

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