Titre du document / Document title

Repermeabilität geschädigter Bohrkerne durch Mikroemulsionsbildung bei Säurebehandlung = Repermeability of damaged cores by formation of microemulsions during acid treatment

Auteur(s) / Author(s)

OBAH B. ⁽¹⁾ ; GHOFRANI R. ⁽²⁾ ; SHOKIR E. M. E.-M. ⁽²⁾ ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

⁽¹⁾ Department of Chemical and Petroleum Engineering, Federal University of Technology, Owerri, NIGERIA
⁽²⁾ Institut for Erdöl-und Erdgastechnik, Technische Universität Clausthal, Clausthal-Zellerfeld, ALLEMAGNE

Résumé / Abstract

The improved mobility of residual oil, attained by the formation of microemulsions in low-tension flooding could be made to apply to acid stimulation. By formation of microemulsions, the oil restraining viscosity- and capillary forces could be drastically reduced. The formation of water- as well as emulsionblock can therefore be prevented. The oil saturation in the near-well bore area can be reduced and the water wettability of the zone increased, resulting in a better access for treatment with water based acids. The acid reaction rate is also retarded, preventing faster acid breakthrough and fingering.

Revue / Journal Title

Tenside, surfactants, detergents   ISSN 0932-3414   CODEN TSDEES 

Source / Source

1998, vol. 35, n^o5, pp. 346-352 (16 ref.)

Langue / Language

Allemand

Editeur / Publisher

Hanser, München, ALLEMAGNE  (1986) (Revue)

Mots-clés anglais / English Keywords

Theoretical study ; Microemulsion ; Anionic surfactant ; Cosurfactant ; Acid medium ; Wettability ; Viscosity ; Temperature effect ; Capillarity ; Kinetics ;

Mots-clés français / French Keywords

Etude théorique ; Microémulsion ; Agent surface anionique ; Coagent surface ; Milieu acide ; Mouillabilité ; Viscosité ; Effet température ; Capillarité ; Cinétique ;

Mots-clés espagnols / Spanish Keywords

Estudio teórico ; Microemulsión ; Agente superficie aniónico ; Coagente superficie ; Medio ácido ; Remojabilidad ; Viscosidad ; Efecto temperatura ; Capilaridad ; Cinética ;

Localisation / Location

INIST-CNRS, Cote INIST : 12517, 35400007131346.0040