Scaling In The Reservoir In Kizildere Geothermal Field, Turkey

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Journal Article: Scaling In The Reservoir In Kizildere Geothermal Field, Turkey

At Kizildere geothermal field, the fluid in the reservoir is hot pressurized water at 200°C containing about 2% CO2 dissolved in the fluid by weight. During production, as the pressure decreases this gas is released into the vapor phase. When the reservoir fluid loses its dissolved CO2 the equilibrium of the dissolved solids is destroyed and deposition occurs, either in the reservoir or in the well. Scaling in the well can be cleaned mechanically but it is more or less impossible to clean the reservoir. Thus the gas must be kept dissolved in the water until it reaches the well. At Kizildere the wells are cleaned every six months of production. After cleaning it has been observed that some of the wells regain their original production values and others do not. Well KD-14 was deepened and incrustation noted on the cuttings coming from the reservoir. On closing the wells some of them retain their well-head pressure at a constant value, whereas in others a pressure build-up continues at the well-head. Normally the static WHP are around 5 - 6 kg/cm2. However, after closure of the master-valve in wells KD14 and KD15 the WHP continued to increase until all the water column in the well was changed by the gas. This phenomenon occurs because of the presence of free gas in the reservoir.

olcenog and Kadri lu

Published Journal 
Geothermics, 1986

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olcenog,Kadri lu. 1986. Scaling In The Reservoir In Kizildere Geothermal Field, Turkey. Geothermics. (!) .