Print Email Facebook Twitter Analysis of Formation Gas Processing in Geothermal Projects Title Analysis of Formation Gas Processing in Geothermal Projects Author de Wildt, Midas (TU Delft Technology, Policy and Management) Contributor Blok, K. (mentor) Correljé, A. (graduation committee) Vardon, P.J. (graduation committee) Degree granting institution Delft University of Technology Programme Complex Systems Engineering and Management (CoSEM) Date 2020-10-21 Abstract The current production of geothermal heat is not yet considered completely sustainable, since CO2 is emitted. The majority of the emissions from geothermal energy are related to formation gas, for the majority consisting of CO2 and methane (CH4). The amount of (resulting) CO2 emissions due to formation gas is determined by the composition and quantity of the gas, which depends on the location of the well. Ten technologies for dealing with formation gas are identified. A multi-criteria analysis is executed to determine the preferred solution. The analysis compares the solutions on two quantitative criteria, finances and CO2 emissions, and three qualitative criteria, robustness, degree of required technological developments and difficulty of operating. The CO2 emissions in this study are allocated based on the polluter pays principle, where the polluter is responsible for the emitted CO2 and the costs to prevent it. A base case in the Netherlands is assessed to compare the technologies on these five criteria. All technologies considered were able to substantially reduce CO2 emissions. Depending on the ratio of CO2 to methane, either re-injecting gases while kept in solution (under pressure technology) or any of the gas use with CO2 injection technologies are preferred. The more expensive solutions (i.e. combined heat and power plant with CO2 injection) also yield more income, making the assessment strongly influenced by changes to price and subsidies. The analysis showed that the results could be strongly influenced by uncertainties in the future, mainly uncertainties regarding subsidies, sale of gas, CO2 transport, and future technological developments. Subject Geothermal heatFormation gasMulti-criteria analysisTechno-economic analysis To reference this document use: http://resolver.tudelft.nl/uuid:43b4b259-4acb-4fd3-bd0e-e9721f5b73aa Part of collection Student theses Document type master thesis Rights © 2020 Midas de Wildt Files PDF Thesis_MidasdW_reportappendix.pdf 12.09 MB PDF Thesis_MidasdW_Paper.pdf 427.4 KB Close viewer /islandora/object/uuid:43b4b259-4acb-4fd3-bd0e-e9721f5b73aa/datastream/OBJ1/view