Journal cover Journal topic
Advances in Geosciences An open-access journal for refereed proceedings and special publications
Journal topic

Journal metrics

Journal metrics

  • CiteScore value: 1.02 CiteScore 1.02
  • SNIP value: 0.614 SNIP 0.614
  • SJR value: 0.435 SJR 0.435
  • IPP value: 0.97 IPP 0.97
  • h5-index value: 11 h5-index 11
  • Scimago H index value: 32 Scimago H index 32
Volume 45 | Copyright
Adv. Geosci., 45, 281-287, 2018
https://doi.org/10.5194/adgeo-45-281-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

  11 Sep 2018

11 Sep 2018

Outcrop analogue study to determine reservoir properties of the Los Humeros and Acoculco geothermal fields, Mexico

Leandra M. Weydt1, Kristian Bär1, Chiara Colombero2, Cesare Comina2, Paromita Deb3, Baptiste Lepillier4, Giuseppe Mandrone2, Harald Milsch5, Christopher A. Rochelle6, Federico Vagnon2, and Ingo Sass1,7 Leandra M. Weydt et al.
  • 1Department of Geothermal Science and Technology, Technische Universitädt Darmstadt, Schnittspahnstraße 9, 64287 Darmstadt, Germany
  • 2Department of Earth Sciences, University of Torino, Via Valperga Caluso 35, 10125 Torino, Italy
  • 3Institute for Applied Geophysics and Geothermal Energy, EON Energy Research Center, RWTH Aachen, Mathieustraße 10, 52074 Aachen, Germany
  • 4Faculty of Civil Engineering and Geosciences, Delft University of Technology, Stevinweg 1, 2628CD Delft, the Netherlands
  • 5Helmholtz Centre Potsdam – GFZ Research Centre for Geosciences, Section 6.2 – Geothermal Energy Systems, Telegrafenberg, 14473 Potsdam, Germany
  • 6British Geological Survey, Keyworth, NG125GG, Nottingham, England, UK
  • 7Darmstadt Graduate School of Excellence Energy Science and Engineering, Jovanka-Bontschits Straße 2, 64287 Darmstadt, Germany

Abstract. The Los Humeros geothermal system is steam dominated and currently under exploration with 65 wells (23 producing). Having temperatures above 380°C, the system is characterized as a super hot geothermal system (SHGS). The development of such systems is still challenging due to the high temperatures and aggressive reservoir fluids which lead to corrosion and scaling problems. The geothermal system in Acoculco (Puebla, Mexico; so far only explored via two exploration wells) is characterized by temperatures of approximately 300°C at a depth of about 2km. In both wells no geothermal fluids were found, even though a well-developed fracture network exists. Therefore, it is planned to develop an enhanced geothermal system (EGS).

For better reservoir understanding and prospective modeling, extensive geological, geochemical, geophysical and technical investigations are performed within the scope of the GEMex project. Outcrop analogue studies have been carried out in order to identify the main fracture pattern, geometry and distribution of geological units in the area and to characterize all key units from the basement to the cap rock regarding petro- and thermo-physical rock properties and mineralogy. Ongoing investigations aim to identify geological and structural heterogeneities on different scales to enable a more reliable prediction of reservoir properties. Beside geological investigations, physical properties of the reservoir fluids are determined to improve the understanding of the hydrochemical processes in the reservoir and the fluid-rock interactions, which affect the reservoir rock properties.

Download & links
Download
Short summary
The here submitted paper represents the first results of a larger project named GEMex. The objective of the project – a Mexican–European cooperation – is to explore the geothermal potential of deep unconventional systems like enhanced geothermal systems (EGS) and super-hot geothermal systems (SHGS). New exploitation approaches and technologies are being developed, allowing the use of geothermal resources under challenging technical demands.
The here submitted paper represents the first results of a larger project named GEMex. The...
Citation
Share