Journal
PETROLEUM SCIENCE AND TECHNOLOGY
Volume 29, Issue 23, Pages 2407-2415Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/10916461003645443
Keywords
heavy crude oil; paraffin aggregation; pipeline transportation; pulse magnetic field; viscosity reduction
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Ever increasing world energy demand requires the use of all hydrocarbon resources available, especially heavy and extra heavy crude oils, in the near future. However, transportation of these crudes is very difficult due to their high viscosity and low mobility. There are many different methods to reduce heavy crude oil viscosity. Some of these methods are heating, blending, water-in-oil emulsion formation, upgrading, and core annular flow, but each of these methods has several problems. The aim of this research is to investigate a new method to reduce viscosity for pipeline transportation. In this method, asphalt molecules, which are mainly responsible for high viscosity, are aggregated temporarily to micronized clusters while going through a pulsed electric field, causing a reduction of the viscosity. This method does not change the oil's temperature and is very suitable for underwater pipelines. Magnetic fields of 0.03 to 0.3 T were exerted on two kinds of heavy crude oils and viscosity reduction up to 7% was observed.
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