Device and method for testing liquid flow resistance of sucker rod centralizer

Abstract

The invention discloses a sucker rod centralizer liquid flow resistance test device and method and belongs to the oil field testing field. The device comprises a centrifugal pump and a driving motor connected with each other through a coupling; the liquid inlet and the liquid outlet of the centrifugal pump are communicated with a circulating fluid pool through a lower horizontal pipeline and an upper horizontal pipeline respectively; an electromagnetic flowmeter is arranged on the upper horizontal pipeline; a polymethyl methacrylate vertical pipeline, a horizontal output pipeline, and a vertical output pipeline are communicated with one another sequentially; the liquid inlet of the polymethyl methacrylate vertical pipeline is communicated with the upper horizontal pipeline; a sucker rod centralizer can be installed in the polymethyl methacrylate vertical pipeline; the sucker rod centralizer abuts against the upper end and the lower end of the polymethyl methacrylate vertical pipeline;the liquid output of the vertical output pipeline is communicated with the circulating liquid pool; a first pressure gauge and a first ball valve are both disposed at the liquid inlet of the polymethyl methacrylate vertical pipeline; a second pressure gauge and a second ball valve are both arranged on the horizontal output pipeline. The device is simple in structure and easy to operate, and can accurately measure the liquid flow resistance of the sucker rod centralizer.

Description

technical field [0001] The invention relates to the field of oil field testing, in particular to a liquid flow resistance testing device and method for a sucker rod centralizer. Background technique [0002] In the field of oil extraction engineering, due to the large difference in physical properties of different crude oil production fluids and the variety of downhole tools for pumping wells, the movement state of the sucker rod in the wellbore of the pumping well is complicated. Therefore, the sucker rod installed on the sucker rod Due to the different structure of the centralizer, the liquid flow resistance is complicated, which seriously affects the stress state of the sucker rod string in the wellbore, especially in the high-viscosity fluid, which further increases the risk of eccentric wear of the sucker rod string and shortens the inspection time. pump cycle. Therefore, it is necessary to study and analyze the liquid flow resistance of different types of sucker rod c...

AI Technical Summary

Problems solved by technology

[0005] The devices provided by the prior art can only simulate and test the fluid flow resistance of the original produced fluid in the wellbore, but cannot simulate and test the fluid flow resistance of the sucker rod centralizer in the wellbore

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