Rheological Behavior of Foamy Oils
| Autor: | Michel Moan, Patrice Abivin, Isabelle Henaut, Jean-Francois Argillier |
|---|---|
| Rok vydání: | 2008 |
| Předmět: | |
| Zdroj: | Energy & Fuels. 23:1316-1322 |
| ISSN: | 1520-5029 0887-0624 |
| DOI: | 10.1021/ef8006646 |
| Popis: | When a reservoir is depleted, the lightest components (methane, ethane, etc.) can exsolve from the crude oil and create a gaseous phase. In conventional oils, the bubbles grow and coalesce quickly and the gas usually separates from the oil (slug flow). On the contrary, in heavy oils, bubbles are small, remain dispersed, and flow within the oil for a long time. This “foamy oil” phenomenon can drastically change the flow properties of the crude oil. This paper is devoted to the characterization of the heavy oil foaming behavior through a rheological study. Our objectives are to study the kinetics of bubble evolution in heavy oil and to measure the influence of the bubbles on the heavy oil viscosity. A new experimental method was developed on the basis of rheological measurements under pressure. Several heavy oils containing dissolved gas have been depleted inside the pressure cells of controlled stress rheometers to create foamy oils. Viscosity and viscoelastic properties have been continuously measured usi... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|