Determinación del daño de formación en pozos productores de petróleo mediante la integración del análisis de transiente de presión y producción del campo Shushufindi-Aguarico.

Abstract

The Skin in a well is the major factor that influence the decrease of its productive characteristics during its exploitation stage. Traditionally, the skin is determined from the pressure transient analysis (PTA). However, the execution of this test requires relatively long periods of time to achieve stabilization of the well. Rate transient analysis, or RTA, is the natural complement of PTA when pressure data and production rates are available. The RTA began on a purely empirical basis. However, it has evolved to a modern methodology that shares tools of analysis and modeling with PTA. A full dynamic workflow was developed to integrate not only PTA and RTA but also a mechanical evaluation of the well, geological and petrophysical data along with the full field conceptual model. This advanced analysis becomes a source of information that allows engineers to characterize and determine the skin in a well and reservoir. Based on the results obtained, an economic analysis of the skin remediation was performed in the wells selected to apply the methodology proposed in this study, and its application benefit is demonstrated.