Improving the Energy Efficiency of the Use of Oil Jet Pumps

The substantiation of the choice of design parameters characterizing the mutual orientation of the mixed flows and the ratio of the geometric dimensions of the elements of the flow path of the jet pump that provide an increase in the energy characteristics of borehole ejection systems is given. Depending on the mutual orientation of the mixed flows, three variants of the design of the jet pump are possible, viz. the one with a parallel orientation of the working and ejected flows, the one with the inlet of the ejected flow at a sharp angle, and the one with a perpendicular orientation of the working and ejected flows. The magnitude of the angle between the velocity vectors of the mixed flows directly affects the intensity of vortex formation in the mixing chamber, the amount of energy loss and the efficiency of the jet pump; however, the simplicity of their manufacture remains the determining condition for choosing the design variant of the elements of ejection systems. Based on the use of the laws of conservation of energy, the 

amount of motion and continuity of the flow, it is determined that the level of energy loss during mixing flows is directly proportional to the magnitude of the angle of entry of the ejected medium. In the course of computer simulation of the jet pump workflow, an asymmetric distribution of hydrodynamic parameters for the non-parallel orientation of the mixed flows has been obtained. In order to reduce energy losses when mixing flows, the value of the angle of entry of the ejected flow must be taken in the range from 0 to 15°. In the case of the implementation of the zero head mode and the maximum ejection coefficient, minimal energy losses during mixing of flows are provided for the main geometric parameter of the jet pump equal to 2.375. In the course of experimental studies, the inverse dependence of the maximum value of the efficiency of a borehole jet pump on the value of its main geometric parameter represented as a power function, has been established. When using ejection systems that implement long-term technological processes (e. g., during oil production), it is necessary to take the minimum possible value of the main geometric parameter of the jet pump for the specified operating conditions.

1. Syed M. P., Najam B., Sacha S. (2014) Surface Jet Pumps Enhance Production and Processing. Journal of Petroleum Technology, 66 (11), 134–136. https://doi.org/10.2118/1114-0134-jpt.

2. Faustinelli J., Briceno W., Padron A. (1999) Gas Lift Jet-Pump Applications Offshore Lake Maracaibo. Journal of Petroleum Technology, 51 (5), 30–32. https://doi.org/10.2118/0599-0030-jpt.

3. Carvalho P. M., Podio A. L., Sepehrnoori K. (1999) An Electrical Submersible Jet Pump for Gassy Oil Wells. Journal of Petroleum Technology, 51 (5), 34–35. https://doi.org/10.2118/0599-0034-jpt.

4. Shen J., Wu X., Wang J. (2010) Application of Composite Jet-Rod Pumping System in a Deep Heavy-Oil Field in Tarim China. Proceeding of the SPE Annual Technical Conference and Exhibition. Florence, Sept. 19–22, 2010. https://doi.org/10.2118/134068-MS.

5. Urazakov K. R., Abramova E. V., Topolnikov A. S., Minnigalimov R. Z. (2013) Technology for Increasing Oil from Low-Productiv Wells. Neftegazovoe Delo [Oil and Gas Business], (4), 201–211 (in Russian).

6. Kryzhanivskyi Ye. I., Panevnyk D. A. (2020) Improving Use Efficiency Above-Bit Jet Pumps. Improving The Efficiency of The Use of High-Pressure Jet Pumps. Socar Proceedings, (2), 112–118 (in Russian).

7. Chen S., Yang D., Zhang Q., Wang J. (2009) An Integrated Sand Cleanout System by Emp-loying Jet Pumps. Journal of Canadian Petroleum Technology, 48 (5), 17–23. https://doi.org/10.2118/09-05-17-TN.

8. Panevnyk D. O., Panevnyk O. V. (2020) Investigation of the Joint Work of a Jet and Plunger Pump with a Balancing Crank-Rod Drive. Neftyanoe Khozyaistvo = Oil Industry, (2), 58–61. https://doi.org/10.24887/0028-2448-2020-2-58-61 (in Russian).

9. Ivashechkin V. V., Krytskaya V. I., Anufriev V. N., Avrutin O. A. (2021) Methodology for Analyzing the Actual Technical Condition of Downhole Pumping Equipment. Enеrgеtika. Izvestiya Vysshikh Uchebnykh Zavedenii i Energeticheskikh Ob’edinenii SNG = Energetika. Proceedings of CIS Higher Education Institutions and Power Engineering Associations, 64 (3), 275–286. https://doi.org/10.21122/1029-7448-2021-64-3-275-286 (in Russian).

10. Portillo-Vélez R. J., Vásquez-Santacruz J. A., Marín-Urías L. F., Vargas A., García-Ramírez P., Morales-de-la-Mora J. L., Vite-Morales A. L., Gutierrez-Domínguez E. A. (2019) Efficiency Maximization of a Jet Pump for an Hydraulic Artificial Lift System. Revista Internacional de Métodos Numéricos Para Cálculo y Diseño en Ingeniería, 35 (1), 12. https://doi.org/10.23967/j.rimni.2018.11.002.

11. Panevnyk D. A., Panevnyk A. V. (2020) Improving the Energy Efficiency of the Use of Borehole Jet Pumps. Enеrgеtika. Izvestiya Vysshikh Uchebnykh Zavedenii i Energeticheskikh Ob’edinenii SNG = Energetika. Proceedings of CIS Higher Education Institutions and Power Engineering Associations, 63 (5), 462–471. https://doi.org/10.21122/1029-7448-2020-63-5-462-471 (in Russian).

12. Kamenev P. N. (1970) Hydraulic Elevators in Construction. Moscow, Stroyizdat Publ. 415 (in Russian).

13. Sokolov E. Ya., Zinger N. M. (1989) Jet Devices. Moscow, Energoatomizdat Publ. 352 (in Russian).

14. Sazonov Yu. A. (1989) Development of a Device that Reduces the Differential Pressure at the Well Bottom and Increases the Drilling Speed. Moscow. 176 (in Russian).

15. Mikhail S., Hesham A., Abdou M. (2005) Two-Phase Flow in Jet Pumps for Different Liquids. Journal of Fluids Engineering, 127 (5), 1038–1042. https://doi.org/10.1115/1.2160104.

16. Kosnyrev B. A. (1984) Improving Bit Performance by Reducing Hydrodynamic Pressure at the Well Bottom. Ufa. 189 (in Russian).

17. Panevnyk D. A. (2020) Improvement in the Efficiency of Above-Bit Jet Pumps Use. Ivano-Frankivsk. 228 (in Russian).