Contact angle measurements and wetting behavior of inner surfaces of pipelines exposed to heavy crude oil and water (Record no. 179935)
[ view plain ]
| 000 -LEADER | |
|---|---|
| fixed length control field | 02740nab a2200205 4500 |
| 008 - CÓDIGOS DE INFORMACIÓN DE LONGITUD FIJA - INFORMACIÓN GENERAL | |
| Campo de control de longitud fija | 260224s xxu |
| 245 00 - TITULO | |
| Título | Contact angle measurements and wetting behavior of inner surfaces of pipelines exposed to heavy crude oil and water |
| 270 ## - FECHA DE CARGA | |
| Fecha de carga | 04/12/2008 ; 12/07/2006 |
| 300 ## - DESCRIPCION FISICA | |
| Otra extensión | 8 p. |
| 520 ## - RESUMEN, ETC | |
| Resumen | TRANSCRIPCIÓN DEL RESUMEN PUBLICADO POR EL AUTOR: The technology of oil flow in pipelines assisted by its confinement within an annular aqueous section, known as core-flow, has emerged as a viable alternative for the transportation of heavy crude oils. The lubricating effect of the aqueous film leads to reduced equivalent viscosities and, hence, low energy consumption. One of the possible problems associated with this technique is the gradual accumulation of oil on the inner pipeline surfaces, requiring the use of cleaning procedures. This work is aimed at investigating the roles of the oil polar components on the wetting of such surfaces by crude oils through contact angle measurements in systems containing heavy oil/aqueous phase/metallic surfaces. Asphaltenes and naphthenic acids were removed from the crude oil, respectively, by flocculation with alkanes and by washing with alkaline solution. As model metallic surfaces, commercial and galvanized steel were used; and the studied aqueous phases comprised pure water, 1% sodium chloride and sodium meta-silicate solutions. Static contact angles were determined via the placement of an oil droplet under the metallic surface in the presence of an aqueous phase. These measurements revealed small influence of the nature of the metallic surfaces on the observed wettability. Significant effects, however, were observed depending on the presence of asphaltenes and naphthenic acids, whose removal reduced the contact angles from an oil-wet behavior (angles above 145°) to a water-wet situation, with angles smaller than 45° and 80°, respectively. Experiments carried out with aqueous phases containing 1% sodium meta-silicate and sodium chloride revealed contact angles smaller than 60° in most cases, confirming their suitability for the prevention of oil deposition onto these surfaces. Moreover, this study confirms that measurements of static contact angles are useful for screening of formulations and surfaces used in oil transportation prior to flow tests. |
| 773 0# - CORRECCIÓN | |
| Título | Journal of Petroleum Science & Engineering |
| Partes relacionadas | Vol. 51, Issues 1-2 (abr. 2006) ; p. 9-16 |
| 942 ## - DESC. DE MATERIAL | |
| Tipo de item KOHA | Artículo de Revista |
| 100 1# - RESPONSABLE PERSONAL | |
| Apellido, Nombre | Santos, Ronaldo G. dos |
| 9 (RLIN) | 48770 |
| 100 1# - RESPONSABLE PERSONAL | |
| Apellido, Nombre | Mohamed, Rahoma S. |
| 9 (RLIN) | 12132 |
| 650 #0 - MATERIA | |
| Término tópico | Petróleos pesados |
| 9 (RLIN) | 22736 |
| 650 #0 - MATERIA | |
| Término tópico | Asfaltenos |
| 9 (RLIN) | 20433 |
| 650 #0 - MATERIA | |
| Término tópico | Mojabilidad |
| 9 (RLIN) | 26521 |
| Biblioteca propietaria | Biblioteca actual | Fecha de adquisición | Inventario | Total de préstamos | Inventario | Fecha de carga | Tipo de item KOHA |
|---|---|---|---|---|---|---|---|
| Biblioteca Alejandro Angel Bulgheroni | Biblioteca Alejandro Angel Bulgheroni | 05/03/2026 | 200039605 | 200039605 | 05/03/2026 | Artículo de Revista |
