Determinação da norma de materiais radioativos de ocorrência natural (Ra-226, Ra-228) em refluxo sintético desenvolvido em escala de laboratório a partir de rochas do poço la LUNA-1, Colômbia, e benchmarking com Marcellus e jogos de xisto de Eagle ford
DOI:
https://doi.org/10.5935/jetia.v7i30.770Resumo
A década atual tem se caracterizado por mudanças significativas na energia global, entre as quais se destacam o desenvolvimento de novas jazidas de hidrocarbonetos, inclusive os não convencionais. Na Colômbia, a necessidade de exploração dessas jazidas tem sido evidenciada pela falta de reservas de convencionais. Um dos principais problemas identificados na produção desses recursos é a percepção de efeitos negativos diretos sobre o meio ambiente, incluindo a água como recurso. Como parte dos esforços para identificar efeitos potenciais na produção futura de depósitos de rocha geradora na Colômbia, experimentos foram conduzidos para detectar a presença ou aumento de elementos radioativos na água de refluxo de fluidos de fraturamento hidráulico, que é um dos principais problemas identificados em atualmente produzindo campos no mundo. Foram utilizadas amostras de La Luna-1, o primeiro poço estratigráfico de gás / petróleo de xisto da Colômbia. Esta pesquisa experimental teve como objetivo obter medições de “Teste NORM com Limites de Detecção Inferiores” de um refluxo sintético da digestão de amostras de rocha e fluidos de fratura (água escorregadia) incluindo HCl a 15%. Os resultados mostram baixas concentrações de NORM de refluxo sintético; para contextualizar esses dados foi realizado um benchmarking com dois importantes depósitos não convencionais, Marcellus e Eagle Ford Shales.
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