Applying Bootstrap Method to Assess Fractured Reservoirs

Abstract

Identifying the type of a fractured reservoir at the initial stages of field development is of extreme importance. The paper examines the applicability of the cumulative production indicator and the productivity index of wells to determine the type of fractured reservoir. To achieve this, a statistical method for analyzing the Lorenz curve and the Gini coefficient (as applied to determine the impact of fractures) with small data samples and at the initial stages of field development is used. The bootstrap method is applied to analyze the fracture impact coefficient for a small number of wells. It is shown that similar results were obtained when using cumulative production and productivity index to identify fractured reservoirs with a small number of wells. To increase the reliability of classification for a small number of wells, a data sample is required that most fully describes the field.