Design and application of new impeller-type wax-proof device based on speed-increasing wax-proof mechanism

Feng, Z.-m., Sun, Y., Liu, X. , Cui, W. and Duan, W. (2021) Design and application of new impeller-type wax-proof device based on speed-increasing wax-proof mechanism. Journal of Petroleum Science and Engineering, 200, 108392. (doi: 10.1016/j.petrol.2021.108392)

Abstract

Wax deposition in oil wells seriously affects hydrocarbon production and causes inevitable economic losses. Especially in rodless pumping wells, due to the lack of the stirring effect of the sucker rod, the waxing of the tubing is more serious. According to the correlation law between flow velocity and wax deposition, a speed-increasing impeller wax prevention device was designed. Based on fluid dynamics, the influence of impeller geometry and equipment process parameters on wax deposition was studied, and the optimization design of the device was proposed. After that, CFD simulations were used to determine the structure parameters of the wax-proof device. The diameters of the impeller hub and rim are 34 mm and 60 mm, respectively; the axial length of the impeller is 42 mm; the number of blades is five; the rotation speed is 600 r/min. The inlet and outlet angle of the blade was designed based on the increasing ability of the impeller's speed. The head of the impeller is used as the basis for determining the distance of the paraffin preventer. Starting from the position prone to the wax deposition, place multiple wax-proof impellers in series in the wellbore. Comparing with traditional wax prevention methods, our experiments showed that this wax-proof device has a good function in wax prevention and improves the economic benefit of high waxy wells. This paper provides a new choice for wax-proof device.

• Item Type: Articles
• Additional Information: The project was funded by Natural Science Foundation of Heilongjiang province (No. LH 2019E018), Natural Science Foundation of China (No.51774091; 51607035), Heilongjiang Postdoctoral Research Foundation (LBH-Q20083; LBH-Q18029), EPSRC Doctoral Training Partnership (EP/R513222/1), Daqing guiding science and technology planning project (zd-2019-20). China Postdoctoral Science Foundation (2018M641804).
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Liu, Dr Xiaolei

Creator Roles

Liu, X.: Writing – review and editing

• Authors: Feng, Z.-m., Sun, Y., Liu, X., Cui, W., and Duan, W.
• Subjects: T Technology > T Technology (General)
• College/School: College of Science and Engineering > School of Engineering > Systems Power and Energy
• Journal Name: Journal of Petroleum Science and Engineering
• Publisher: Elsevier
• ISSN: 0920-4105
• ISSN (Online): 1873-4715
• Published Online: 15 January 2021
• Copyright Holders: Copyright © 2021 Elsevier B.V.
• First Published: First published in Journal of Petroleum Science and Engineering
• Publisher Policy: Reproduced in accordance with the publisher copyright policy

Project Code	Award No	Project Name	Principal Investigator	Funder's Name	Funder Ref	Lead Dept
305200		DTP 2018-19 University of Glasgow	Mary Beth Kneafsey	Engineering and Physical Sciences Research Council (EPSRC)	EP/R513222/1	MVLS - Graduate School