Flow Patterns in Heavy Crude Oil-Water Flow
Author:
Bannwart Antonio C.1, Rodriguez Oscar M. H.2, de Carvalho Carlos H. M.3, Wang Isabela S.4, Vara Rosa M. O.4
Affiliation:
1. UNICAMP, Faculty of Mechanical Engineering, Dept. of Petroleum Engineering, State University of Campinas–UNICAMP, Cx. P. 6122, 13083-970, Campinas, SP, Brazil 2. UNICAMP, Faculty of Mechanical Engineering, Dept. of Energy 3. PETROBRAS-CENPES 4. UNICAMP, Faculty of Mechanical Engineering, Dept. of Petroleum Engineering
Abstract
This paper is aimed to an experimental study on the flow patterns formed by heavy crude oil (initial viscosity and density 488 mPa s, 925.5kg/m3 at 20°C) and water inside vertical and horizontal 2.84-cm-i.d. pipes. The oil-water interfacial tension was 29 dyn/cm. Effort is concentrated into flow pattern characterization, which was visually defined. The similarities with gas-liquid flow patterns are explored and the results are expressed in flow maps. In contrast with other studies, the annular flow pattern (“core annular flow”) was observed in both horizontal and vertical test sections. These flow pattern tends to occur in heavy oil-water flows at low water input fractions. Because of the practical importance of core flow in providing an effective means for heavy oil production and transportation, this paper discusses criteria that favor its occurrence in pipes.
Publisher
ASME International
Subject
Geochemistry and Petrology,Mechanical Engineering,Energy Engineering and Power Technology,Fuel Technology,Renewable Energy, Sustainability and the Environment
Reference16 articles.
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