Resumo

ARAGON-AGUILAR, Alfonso; IZQUIERDO-MONTALVO, Georgina  e  ARELLANO-GOMEZ, Víctor. Behavior of the damage effect of wells using data of their production measurements. Tecnol. cienc. agua [online]. 2014, vol.5, n.1, pp.157-163. ISSN 2007-2422.

The damage effect in a well is an influence factor in the productive characteristics decrease, along its exploitation stage. Ordinarily the damage effect has been determined from the equations to analyze transient pressure tests. However it is emphasized that the execution of such transient tests, requires of long periods time in order to reach the stabilization in the well. Due to difficulties to carry out transient pressure tests, were developed techniques for determining the damage effect using measurement production data, in order to avoid the extraction of the wells from production system. The geothermal inflow type-curve affected with damage and different examples for the damage determination are shown. The data used were obtained from production measurements in wells of Mexican geothermal fields, taken at different stages of its operative life. From the analysis carried out it was found that the damage value obtained in analyzed wells increases as function of exploitation time. The last thing is related with deterioration in productive characteristics of the wells. The knowledge of the damage effect helps to consolidate technical criteria for taking decisions about the appropriate operations to apply in the well (Such as cleanings, repairs, stimulations, fracturing, etc.).

Palavras-chave : inflow curves; damage effect; production test; output curves; characteristic production curves; reservoir characterization; production decline.

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