Análisis técnico-económico comparativo para el cambio de fluido motriz de petróleo por agua de formación, del sistema hidráulico en el campo Sacha

Abstract

The objective of the following study is to perform a comparative technical-economic analysis for the change of power oil fluid by formation water, from hydraulic system in the Sacha field, located at the block 60 from Ecuadorian east. The artificial lift system, actually operates with power oil fluid that allows the production of 12 wells, of which 10 wells have subsurface pumps jet type and two piston type. The proposal requires changing the geometries of the subsurface pumps, according to the new parameters that have with the power formation water fluid, all the pumps must be jet type. With the new geometries of the pumps, the production is optimized in 11 of the 12 wells. A physical-chemical analysis from the formation water was performed, to verify if it can be used and to avoid complications in the future. The total volume of oil to be recovered is determined on the injection and return lines, as well as the stationary volume in the surge tank. The process of dehydration improves because with the power formation water fluid, there will be not reprocessing with the oil. The costs are reduced by chemical treatment, as the consumption of demulsifying injection decreases. Finally, in the economic analysis, the viability of the project is reflected, once that the investment costs and monthly income are obtained.