title: X-ray microtomography of hydrochloric acid propagation in carbonate rocks.
abstract: Acid treatments are used in the oil and gas industry, to increase the permeability of the carbonate reservoirs by creating preferential channels, called wormholes. Channels formation is strongly influenced by acid type and injection rate. The aim of this study is to evaluate some characteristics of the microporous system of carbonate rocks, before and after acidizing. For that purpose X-ray high-resolution microtomography was used. The results show that this technique can be used as a reliable method to analyze microstructural characteristics of the wormholes.
authors.affiliation: Nuclear Instrumentation Laboratory, Nuclear Engineering Program, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
authors.forename: A C
authors.initials: AC
authors.lastname: Machado
authors.affiliation: CENPES/Petrobras, Rio de Janeiro, RJ, Brazil.
authors.forename: T J L
authors.initials: TJL
authors.lastname: Oliveira
authors.affiliation: CENPES/Petrobras, Rio de Janeiro, RJ, Brazil.
authors.forename: F B
authors.initials: FB
authors.lastname: Cruz
authors.affiliation: Nuclear Instrumentation Laboratory, Nuclear Engineering Program, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
authors.forename: R T
authors.initials: RT
authors.lastname: Lopes
authors.affiliation: Nuclear Instrumentation Laboratory, Nuclear Engineering Program, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil. Electronic address: inaya@lin.ufrj.br.
authors.forename: I
authors.initials: I
authors.lastname: Lima
keywords: Acidizing; Carbonate; Microtomography; Wormhole; X-ray