ASSESMENT OF ELECTRICITY GENERATION OF GEOTHERMAL RESOURCE IN BANG HOT SPRING QUẢNG BÌNH PROVINCE FROM EXPLORATION DATA

Trần Anh Vũ¹, Đoàn Văn Tuyến¹,
Đinh Văn Toàn¹, Trần Tuấn Anh¹, Nguyễn Trường Lưu²

¹Institute of Geological Science - Việt Nam Academy of Science and Technology

²Geophysical Union - Ministry of Natural resource and Environment

Abstract: The geochemical analyses of more than 200 hot water samples collected from different areas, geological conditions and geothermal regimes entire territory of Việt Nam has been identified a large number of heat sources in Central region with the indication on young magmatic origin is prospective as worldwide for electrical generation; The results of firstly using a combination of geological, geochemical, geophysical methods in Việt Nam to study the geothermal system in the area of Bang hot spring - Quảng Bình province. It has identified the location and indications of the model of a typical hydro-geothermal system with magmatic origin. Reservoir temperature has been determined by geochemical thermometers, giving values in the range of 167-210◦C; from modelling results, temperature of the reservoir can reach 200◦C at the depth of 2 km. The obtained data allows to determine the suitable location for exploration drilling to the reservoir in the next phase of the Geothermal Program; Obtained results let propose next phase of program: test drilling to a depth of 2.5 km to control parameters of geothermal reservoir in area Bang will be serve as the database for designing pilot geothermal plant here. The used method should be applied to determine the geothermal reservoir for other prospective geothermal resources in Central region is a Government proposing in strategy for development renewable energy in Việt Nam.

Keywords: Bang hot spring, geothermal, geochemical thermometer, hydrothermal, magma, magnetotelluric, reservoir.