Amides as thermo-sensitive tracers for investigating the thermal state of geothermal reservoirs. (November 2016)

• Record Type: Journal Article
• Authors: Schaffer, Mario; Idzik, Krzysztof R.; Wilke, Max; Licha, Tobias
• Is Part Of: Geothermics. Volume 64(2016:Nov.)
• Page Start: 180
• Page End: 186
• Publication Date: 2016-11
• Subjects: Thermo-sensitive tracers -- Amides -- Hydrolysis -- Kinetics -- Reservoir temperature -- Molecular design; Hydrogeology -- Periodicals; Geothermal resources -- Periodicals; Énergie géothermique -- Périodiques; GEOTHERMAL ENGINEERING; GEOTHERMAL ENERGY; GEOTHERMAL EXPLORATION; Geothermal resources; Hydrogeology; Periodicals; Electronic journals; 621.44
• DOI: 10.1016/j.geothermics.2016.05.004
• Languages: English
• ISSNs: 0375-6505

Abstract

Highlights: Development and evaluation of thermo-sensitive tracers based on amides. Hydrothermal batch and autoclave experiments with 17 self-synthesized amides. Investigating the role of molecular structure and pH/pOH on hydrolysis kinetics. Amides are promising thermo-sensitive tracers for medium enthalpy reservoirs. Abstract: The application of thermo-sensitive tracers is a promising technique for evaluating the thermal state of geothermal reservoirs. To extend the compound spectrum for hydrolyzable compounds to reservoir temperatures between 100 and 200 °C carboxamides were studied. The kinetic parameters of 17 self-synthesized amides were determined in hydrothermal batch and autoclave experiments. The influence of the molecular structure and the role of pH/pOH on hydrolysis kinetics were studied. Additionally, the thermal stabilities of the hydrolysis products were evaluated. The results demonstrate the high potential of tracers based on amide hydrolysis for use in medium enthalpy reservoirs.