Evaluación técnica comparativa del incremento de producción con fracturamiento hidráulico y estimulación matricial en el Campo Sacha

Abstract

The technical-economic analysis was performed based on the evaluation of matrix stimulation and hydraulic fracturing in Campo Sacha during the period January - June of the year 2019. 2 wells with matrix stimulation and 8 with hydraulic fracturing were selected. The production history was evaluated before and after the reconditioning works using the Oil Field Manager (OFM) software tool, the petrophysical study was performed with the interpretation of the well logs to find the stops bases and the predominant lithology in the formation of interest for each well.

For the technical analysis, the evaluation of the wells with matrix stimulation (SCH-235HI and SCH-457HS) was carried out, the acids present in the chemical treatment and their relationship with the formation matrix were optimal, since an increase in production was recorded after reconditioning. In wells with hydraulic fracturing: (SCH-188UI, SCH-316UI, SCH-370UI, SCH-393UI, SCH-402UI, SCH-420TI, SCH-430UI and SCH-460UI) the effectiveness study was performed by interpreting the Vogel curves and it was evident that in all the wells there was an increase in the daily production of oil, obtaining successful reconditioning works. The economic study using 3 scenarios (lousy, real, optimistic), for the wells: SCH-316UI, SCH-393UI, SCH-402UI and SCH-460UI, concluded that they are not economically profitable due to the investment recovery time is high.