«Equipment and technologies for oil and gas complex»

STUDY OF THE OPERATION OF CENTRIFUGAL-VORTEX STAGES WITH DIFFERENT DESIGNS OF VORTEX RIMS WHEN PUMPING A GAS-LIQUID MIXTURE

UDC: 622.276.054.23:621.67-83:622.276.5.05.001.41
DOI: 10.33285/1999-6934-2021-6(126)-5-8

Authors:

¹ National University of Oil and Gas "Gubkin University", Moscow, Russian Federation

Keywords: electric submersible pump unit, gas-liquid mixture, centrifugal vortex stages, vortex crowns, bench tests

Annotation:

The use of special designs of the stages of an electrically-driven vane pump unit (EVP) allows producing formation fluid without using upstream devices in case of a high content of free gas at the pump intake. The main distinguishing feature of the centrifugal-vortex stages from the stages of other designs is the presence of a vortex rim mounted on the rear disc of the impeller. The geometric parameters of the rim greatly affect the characteristics of the stage, both when pumping a pure liquid and a gas-liquid mixture. The article presents the main results of bench tests of mini-sections of electrically-driven vane pumps when pumping a gas-liquid mixture. The stages of the sections are centrifugal-vortex with different geometry of the vortex rim. The results of the tests carried out are the dependences of the pressure created by the mini-section of the EVP with different geometric parameters of the vortex rim when pumping a gas-liquid mixture, on different absolute pressure at the inlet. A conclusion is made about the different ability of centrifugal-vortex stages to pump a gas-liquid mixture at the same inlet pressures.

Bibliography:

1. Osnovy konstruirovaniya, rascheta i stendovykh ispytaniy rabochikh stupeney elektroprivodnykh lopastnykh nasosov dlya dobychi nefti / V.N. Ivanovskiy, A.A. Sabirov, A.V. Degovtsov [i dr.]. – M.: RGU nefti i gaza im. I.M. Gubkina, 2020. – 243 s.
2. Ivanovskiy V.N. Lopastnye nasosy dlya dobychi nefti. Napor ili davlenie? // Oborudovanie i tekhnologii dlya neftegazovogo kompleksa. – 2021. – № 5(125). – S. 7–11. – DOI: 10.33285/1999-6934-2021-5(125)-7-11
3. Kas'yanov V.M. Gidromashiny i kompressory. – M.: Nedra, 1981. – 295 s.
4. K voprosu o zavisimosti kharakteristik stupeney lopastnykh nasosov ot usloviy ispytaniy / T.R. Dolov, Yu.A. Donskoy, A.V. Ivanovskiy [i dr.] // Oborudovanie i tekhnologii dlya neftegazovogo kompleksa. – 2020. – № 2(116). – S. 23–26. – DOI: 10.33285/1999-6934-2020-2(116)-23-26
5. Dolov T.R., Ivanovskiy A.V., Shaykhulov R.M. Degradatsiya kharakteristik elektroprivodnykh lopastnykh nasosov s koeffitsientom bystrokhodnosti ot 100 do 150 pri perekachke gazozhidkostnoy smesi // Oborudovanie i tekhnologii dlya neftegazovogo kompleksa. – 2021. – № 4(124). – S. 5–10. – DOI: 10.33285/1999-6934-2021-4(124)-5-10