The Acidification Process Of Producing Wells In Kizildere Geothermal Area And Effects On Well Performance

Abstract

At the Kizildere Geothermal field, 25 deep wells and 108 gradient wells have been drilled as of January 2009. Ten are production wells, one is an injection well and three are the observation wells. Production decreases over time as a result of scaling since there is no inhibition system used in the field. When electricity generation of the power plant decreases to 10 MW, production is recovered by conducting mechanical cleaning in the wells. In 2008, an inhibiton system was installed for the wells KD–14 and KD–20 and currently operates successfully. The inhibition system is planned to be installed for all the wells in the field in 2009. The production wells whose productivity indexes appeared to decrease according to tests were acidized to increase production. Acidizing operation were performed twice. In 2008 and 2009, 40 tons of HCl and 600 kg of corrosion inhibitor were used for each well and 360 tons of HCl and 5400 kg corrosion inhibitor, respectively. The acidizing operations, their advantages and disadvantages, and the effects on the productions are evaluated in this paper.