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Classical and integrated multicomponent geothermometry at the Tengchong geothermal field, Southwestern China

  • Author(s): Xu, T
  • Hou, Z
  • Jia, X
  • Spycher, N
  • Jiang, Z
  • Feng, B
  • Na, J
  • Yuan, Y
  • et al.
Abstract

To reconstruct deep fluid chemical composition and increase the confidence in estimated reservoir temperatures, a more integral geothermometry method was compared to other classical geothermometers. Here, we apply the integrated multicomponent geothermometry (IMG) method using the GeoT code to estimate reservoir temperatures at the Tengchong geothermal field in Southwestern China. Results show reservoir temperatures calculated using the quartz geothermometer are closest to those estimated with the IMG method. The concentrations of Al and Mg, as well as selected minerals for geothermometry computations, are key factors for successfully using the IMG. Using the IMG method together with classical geothermometers can significantly increase confidence in reservoir temperature estimations. The methods presented and simulation program used here may be useful for analysis of other geothermal fields under similar conditions.

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