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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
POTENTIAL ENERGY OF ABANDONED OIL WELLS FOR DEPLOYMENT OF NEW GEOTHERMAL POWER PLANTS
Submission Author:
Thiago Croisfelt Batista , PR
Co-Authors:
Thiago Croisfelt Batista, Júlio Passos, Edson Bazzo
Presenter: Thiago Croisfelt Batista
doi://10.26678/ABCM.ENCIT2020.CIT20-0479
Abstract
The present paper aimed to estimate the geothermal potential of the extended lifecycle of four non productive onshore oil wells in the Brazilian states of Mato Grosso, Paraná, Rio Grande do Norte and Santa Catarina. A transient numerical model was designed, deploying a finite volume method, coupling the lithosphere thermal behavior to the recirculating water stream inside each studied wellbore. Heat power potentials between 287.4 and 411.0 kW were estimated for one month of elapsed operating time, decreasing to the range between 157.0 and 235.4 kW at the last simulated year. The heated water achieved temperatures between 89 and 105 ºC. Process losses were also analyzed, indicating heat escape to the upper layers of the soil, whose rates were up to 80 kW. Also, assumptions were discussed, leading to the finding of simplifications that may result in distorted results for this kind of study.
Keywords
Brazilian oilfield, Geothermal Energy, Abandoned oil well, Potential heat power
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