REINJECTION STRATEGY FOR KIZILDERE GEOTHERMAL FIELD

Abstract

In this study, the reinjection into the Kizildere reservoir and injection of disposal water produced from the field into a remote area (3 km away) options are considered. Previous reinjection tests were reevaluated. Then, all idle wells were assessed for reinjection. Injectivities of idle peripheral wells tapping different horizons are evaluated for reinjection. A potential rate of reinjection of 650 tons/hr to 6 wells was estimated. On the other hand, hot (147oC) or relatively cool (100oC) reinjection options are also compared from the silica and calcite deposition point of view. Finally, two reinjection strategies are devised: (1) reinjecting the disposal water to the existing idle wells, and (2) phasing out the existing production wells in the future by converting them to the reinjection wells and exploiting the deeper and hotter reservoir, boosting power generation.