of the Romanian geothermal reservoirs
for geothermal resources began in Romania in the early 1960’s, arising from a
hydrocarbon search program which as an unexpected benefit also identified eight
promising geothermal areas. Within these areas, over 200 wells, drilled to depths
between 800-3500 m, show the presence of low- enthalpy geothermal resources (40-120°C).
Completion and experimental exploitation of over 100 wells during the past 25
years has enabled evaluation of the exploitable heat available from these geothermal
Proven geothermal reserves in Romania are currently
about 200,000 TJ for 20 years. The principal Romanian geothermal resources are
found in porous and permeable sandstones and siltstones (for example, in the Western
Plain and the Olt Valley), or in fractured carbonate formations (Oradea, Bors,
North Bucharest). The total thermal capacity of the existing wells is about 480
MWt (for a reference temperature of 25°C).
Of this total, only 152 MWt are
currently used, from 96 wells (of which 35 wells are used for balneology and bathing)
that are producing hot water in the temperature range of 45-115°C.
the annual energy utilisation from these wells was about 2,900 TJ, with a capacity
factor of 0.6. More than 80% of the wells are artesian producers, 18 wells require
anti-scaling chemical treatment, and six are reinjection wells. The main direct
uses of the geothermal energy are: space and district heating -- 37%; bathing
-- 30%; greenhouse heating -- 23%; industrial process heat -- 7%; fish farming
and animal husbandry -- 2%.
>> Romania Update Report for 1995-1999