DEFINICIÓN Y CARACTERIZACIÓN DE UNIDADES DE FLUJO EN POZOS DE UN YACIMIENTO DEL CINTURÓN PLEGADO Y CABALGADO NORTE CUBANO

Definição e caracterização de unidades de fluxo em poços de um reservatório da Faixa Petrolífera Norte Cubana

Abstract

This paper shows the result obtained after applied not very conventional technical for the identification of Units of Flow, in a location with a complex geologic scenario, as the North Cuban Thrust Belt. The big heterogeneities of the reservoir, fractured carbonates, in oneself Geologic Unit (Veloz Group), they hinder the litho-stratigraphic correlation among producing oil horizons. The reservoirs characterization, directed to the definition and description of bound sequences to common geologic characteristic and with similar properties attributable to the movement of the fluids, called Flow Units (FU), it is a solution possible to define the continuity or not of the same ones. The procedure has the porous means study, in 16 wells of the evaluated location. Statistical-mathematics relationships were used in non-cored wells that, supported in the classification of the porous means, they allow to estimate the matrix and secondary porosity and permeability, the flow effective radius of pores (R35 Winland), the rock type and the mobility reason. From these parameters were identified the flow units by appearance order in the well and with the help of the Modified Lorenz graph were characterized according to their flow capacity and store.