Método sísmico na Bacia de Campos: aplicação de sísmica 4D

Abstract

In the Brazilian territory we find the Campos Basin, an excellent basin in terms of petroleum explorations, there are more than 40 fields already discover ande some oilfields are considerate giants fields as Marlim. Present production is 1.600 million b/d and represents the most production of oil in Brazil. This basin extends from 100.000 Km² of southeastern coast between Rio de Janeiro and Espírito Santo states. Campos Basin is a typical rift basin relate to Gondwana rupture in Middle Cretaceous when the Atlantic Ocean Began. Most of the knowledge about this basin was possible because of the giants investments of seismic explorations. The seismic is the best method indirect of investigation the potential of hydrocarbon in a basin. The understand about this investigation technique of rocks and fluid is very important in offshore basin where we don't have outcrop. This method has enough capable resolution to identificate reservoir at ultra deep and is very changeable to explorations basin. Besides the seismic to permit the accompaniment of production and monitoring of the reservoir using the technology of 4D seismic, this new method is very important to reservoir management in mature oilfields which need secondary and tertiary recovery using injection.