Vízügyi Közlemények, 1975 (57. évfolyam)
1. füzet - Korim Kálmán-Liebe Pál: A szolnoki hévíztároló rendszer fő jellemzői
62 Коггт К. és Liebe P. to exist between the chemical composition of water and the stratigraphie situation of the Upper- and Lower Pannonian layers. Both the total solids and the chloride ion content, as well as the concentration of halogenes (bromide, fluoride, iodide) were found to increase towards the stratigraphie boundary (Fig. 4.). From the Szolnok thermal water reservoir altogether 31.25 million eu . m of thermal water have been extracted up to the end of 1972 ( Table I.). This cumulated withdrawal of thermal water was accompanied by the following changes in the hydrodynamic parameters: 1. A rather great drop in well-head pressure. 2. A small reduction in formation pressure. 3. A great reduction in the gas-water ratio. The parameter critical for the operation of the thermal wells in the Szolnok area is the content of gas dissolved in water. The initial gas-water ratio ranged from 5.71 to 0.26 m 3/m 3, while the data observed in 1973 have shown this range to have changed to between 2.63 and 0.20 m 3/m 3 (Table IV.). Considering its composition, the gas dissolved in water consisted mainly of hydrocarbons, with methane (CH 4) predominating. We have succeeded in demonstrating a numerical correlation between the gas-water ratio and the magnitude of gas lift (Fig. 7.). The drop in well-head pressure and hence the reduction of well yield may be caused by the reduction of the gas-water ratio and/or by that in the formation pressure. Moreover, the reduction in the gas-water ratio may impair also the gas-lift effect ( Tables V. and VI.). At the same time, locally observable scaling will also decrease considerably the yielding capacity of wells. A comparison of the initial well head data with those observed in 1973 is presented in Table II., while the corresponding yield rates are indicated in Table III. The average yield of the individual wells is 0.14 million m 3/year and the rate of water level subsidence has been estimated at 0.09 m/year. Hence the water level is lowered by the extraction of 1 million eu .m of thermal water at the rate of round 0.1 atmosphere/year. The formation temperature of the thermal water reservoir system ranges from 60 to 76 deg. С in the depth interval from 700 to 1100 m (corresponding to a reciprocal geothermal gradient of 16 to 20 m/deg. C), while the temperature of water rising to the surface varied from 47 to 63 deg. C. Considering their chemistry the thermal waters are in part of alkali bicarbonate type and in part of alkali-bicarbonate-chloride type. Concentration; values ranged from 1495 to 12 400 mg/lit, while the chloride ion content from 71 to 1560 mg/lit. * * * Caractéristiques principales des gisements des eaux thermales de Szolnok par Korim, Kálmán, géologue dipl. et Liebe, Pál, ing. dipl. Dans les environs de Szolnok, ville située sur la Tisza, sur un territoire d'environ 50 km 2, 19 puits au total ont été foncés jusqu'à maintenant, en vue d'explorer les gisements des eaux thermales du pliocène moyen (pannonién supérieur). Ce système de réservoire multiples d'eaux thermales dans les gisements des eaux thermales se compose de couches de grès sables séparées par des couches de marne argileuse, développées dans les profondeurs de 500 à 1150 mètres. (Figures 1 et 2.). Bien que se rapportant à l'horizon des gisements des eaux thermales comme à un plan de référence, une hauteur structurale et un affaissement structural soient distingués territorialement ( Fig. 3.), pourtant une relation directe ne peut être observée entre les paramètres de réservoirs (Fig. 6.) et la structure géologique.
