| Title | Technological Schemes to Utilize West Georgian Geothermal Resources |
|---|---|
| Authors | O. Vardigoreli, M. Shvangiradze, N. Tsertsvadze, L.Tsertsvadze, G.Buachidze |
| Year | 2005 |
| Conference | World Geothermal Congress |
| Keywords | Geothermal circulation system, Argo complex, Geothermal power station |
| Abstract | Over 80 percent of geothermal resources of the Republic of Georgia are in Western Georgia. Of them, of special importance is the Zugdidi-Tsaishi deposit due its vast resources and thermal potential. Apart from this, it is better studied. The thermal aquifer at the deposit has been fractured by the regional fault of 1000-1500 amplitude. In the upper (upthrown) block, water of about 1.0 g/l mineralization at 82?C -87?C is circulating. While the lower (downthrown) block contains water of the 2.5 g/l mineralization at 98?C-102?C [1]. In 1997-98 the geothermal wells at the deposit were tested together with American experts. The tests showed that the two tectonic blocks of the producing horizon might be regarded as two independent aquifers, actually as two deposits for there had been no hydraulic links (contacts) established. That is why (proceeding from the above mentioned) it will be possible to regularly produce 30,000 m3/day of high-temperature geothermal water from the two blocks by building the geothermal circulation system (GCS) and using the waste thermal water reinjection. In accordance with the location of wells and distribution of users, the deposit has been conventionally divided into three areas. Three GCSs are to be established there. One of them will be used for heating the Zugdidi municipal sector (18-20 MW); the other for heating the big agro complex in Tsaishi (34-36 MW); while in the higher-temperature area (the downthrown block) a binary geothermal power plant (BGPP) will be built [2]. It is possible to generate thermal heat for Georgia's main port of Poti from the Kvaloni and Menji geothermal water deposits. The 20-MW geothermal power plant (GPP) to be built in the village of Kvaloni will be 20-22km from Poti. By connecting it to the Poti central fuel oil boiler, it will be possible to supply geothermal heating to Poti and the neighboring villages. The balneological resort Tskhaltubo is well known in the world. The temperature of water used in the resort's baths reaches 30-31?C while the total flow rate amounts to 20,000 m3/day. This quantity of thermal water is gathered in a special collector that crosses the resort's center and flows down to the river. Transforming the geothermal water's low-temperature heat by thermocompressors, it will be possible to produce the required 24-MW thermal energy that will be sufficient for central heating of the numerous sanatoriums and rest homes in Tskhaltubo. Then there will be no need in the inefficient fuel oil boilers used there currently. |