THE REINJECTION TESTS IN BASEMENT GEOTHERMAL RESERVOIR, TIANJIN, CHINA
- Key words
- reinjection test, basement, geothermal reservoir
- Conference
- Beijing International Geothermal Symposium
- Year
- 2002
- Session
- Research and Application of Techniques
- Language
- English
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Abstract
By the end of 2000, there are about 184 production wells (including 12 reinjection well) in Tianjin. The annual production rate is 12Mm3 and the reinjection rate is 1.6612Mm3. The water level is between -22 to -70m, the annual draw-down rate is 6-9m. The reinjection test in WR45 doublet system is analyzed here, but we have not observed any temperature changes in surrounding production geothermal wells up to present. The main side effect anticipated from reinjection is the cooling of the reservoir. Tracer test is very important for understanding the transport way and transport channel/space in doublet production/reinjection system, and estimating the possible cooling resulting from the injection.
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