The object of this work was Muri Field, which is located in eastern part of Venezuela. The expectations for this field were high at the beginning of the study. Firstly, the high oil quality of 30 °API; secondly, this field is located near another one under enhanced oil recovery processes with high production rate; and finally, the field has been inactive since 1.994. This paper presents the use and results of a detailed Reservoir Characterization Model in the evaluation of opportunities for the drilling of new production wells. Applying conventional petroleum engineering methods, numerical simulation, and teamwork carried out the study. Muri Field had a structural model generated from a 2D seismic interpretation. This model presented high simplicity and little coherence with the actual well information; being necessary to update it. This reservoir study considers a new structural model, based on a 3D seismic interpretation with a structural frame fitting actual data allowing optimizing the exploitation plans. The use of numerical simulation allowed strengthening the conventional reservoir engineering analyses and enhancing the production expectations for the area. The results are based on teamwork and the application of the available technology. This new engineering study enabled to better evaluate the vertical communication in the field as well as the unification of four different reservoirs; all of them located in the geological formation with higher potential. As a consequence the official field limits were extended, and a lateral communication was established with a large producing field in north of Monagas State. The most relevant results were a two (2) fold increase in recoverable reserves and the evaluation of new exploitation scenarios. The locations of new producer wells were defined taking into account the new boundary area between Muri and the surrounding fields, to improve the final recovery. Introduction Muri Field is located in Maturin, Monagas State, Venezuela, Figure 1. It is part of the Oriental Basin of Venezuela (Subbasin of MaturÍn) and was discovered in 1991 with the perforation of MRC-1E well. Light oil reserves were proved in four different reservoirs of the Naricual Superior Formation at Muri Field 1. The neighbors fields to Muri Field have supported along two decades a high percentage of the national production with high expectations associated to the reservoirs in the Naricual Formation. Nevertheless, Muri Field was closed from 1994 by the low productivity of the reservoirs in the Naricual Formation and few expectations associated to the geologic model, 1991. The location of Muri Field with respect to the best producing zones of the North of Monagas was a key point to begin the review of the current reservoirs model. A reservoir characterization based on the right use of the hardware and previous studies maked possible to generate low costs products with the participation of engineers, geologists and geophysical, among others, in a multidisciplinary team. Based on teamwork concept and the vision of assets reactivation, which has not been used in this field until now was generated a work plan that allows to begin of a reservoir characterization study in Muri Field.

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