Drainage Potential Curves of Single Tapping Point for Bulk Oil–Water Separation in Pipe

Hamidreza Asaadian, Sigurd Harstad and Milan Stanko
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Hamidreza Asaadian: Department of Geoscience and Petroleum, Norwegian University of Science and Technology, S. P. Andersens veg 15, 7031 Trondheim, Norway
Sigurd Harstad: Department of Geoscience and Petroleum, Norwegian University of Science and Technology, S. P. Andersens veg 15, 7031 Trondheim, Norway
Milan Stanko: Department of Geoscience and Petroleum, Norwegian University of Science and Technology, S. P. Andersens veg 15, 7031 Trondheim, Norway

Energies, 2022, vol. 15, issue 19, 1-24

Abstract: In this study, experimental quantification of drainage potential curves for unspiked and spiked Exxsol D60 was performed and compared against simplified numerical model results. This potential relates to the flow rate of tapped water from the bottom of the pipe to the water cut of the tapped stream. To mimic the separation characteristics of a real crude-water mixture, Exxsol D60 was spiked with small amounts of crude oil. A pipe separator with two parallel branches and one tapping point was used to measure drainage potential experimentally. There was a slight decrease in separation performance for the spiked Exxsol D60 in general when compared with the unspiked oil’s drainage potential curves. However, for low inlet water cuts, the performance of the former was significantly worse than the latter. There was, in general, a fair agreement between experimental and numerical drainage potential curves. The flow patterns of the oil–water mixture approaching the tapping point are the major determining factors of drainage potential curves. Results of this work could be employed to predict the performance and design of bulk oil–water pipe separators that have one or multiple tapping points.

Keywords: single tapping point; drainage potential curve; parallel pipe bulk oil–water separator; spiked and unspiked oil (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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