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# Method of calculation for installations with electrical submersible reciprocating pump for oil production

UDK: 622.323
DOI: 10.24887/0028-2448-2020-3-72-76
Key words: submersible plunger pump, linear electrical submersible motor, electrical submersible reciprocating pump, axial loads, power consumptio
Authors: E.O. Timashev (Ufa State Petroleum Technological University, RF, Ufa), K.R. Urazakov (RN-BashNIPIneft LLC, RF, Ufa; Ufa State Petroleum Technological University, RF, Ufa), M.G. Volkov (RN-BashNIPIneft LLC, RF, Ufa), A.R. Garifullin (RN-BashNIPIneft LLC, RF, Ufa), R.S. Khalfin (RN-BashNIPIneft LLC, RF, Ufa; Ufa State Petroleum Technological University, RF, Ufa), A.R. Brot (RN-BashNIPIneft LLC, RF, Ufa)

The article describes a pilot version of a complex method for calculating installations with a electrical submersible reciprocating pump for oil production, based on mathematical models of individual elements of the installation and the well. The main differences between the calculation of parameters of a submersible plunger pump and a rod pump are considered. Algorithms are given for calculating the feed, the speed of the plunger during the up and down stroke, the power consumption and the equivalent power. The design features of a submersible plunger pump are determined by the absence of a rod column, an increased diameter of the valves, another point of application of axial loads, a higher speed of movement of the plunger, a minimum "dead" space and the presence of temporary pauses between the moves of the plunger. The main operating parameters and power factors that form the axial loads on the plunger pump rod in the phases of the swing cycle are considered. The method was tested by calculating the operating parameters of the installation. The results of the calculations demonstrate the independence of the plunger speed and power consumption during the up or down stroke from the number of swings for a given current frequency and length of the plunger stroke. In this case, the feed, the equivalent power and the duration of the pause between the double moves depend on the number of swings. The ratio of operating parameters of installations with a electrical submersible reciprocating pump, calculated according to the developed method, and installations of rod pumps according to the RosPump program, as well as installations of electric centrifugal pumps is shown. For the calculation conditions, in comparison with SRP, the RESP has a higher feed coefficient-0.92 vs. 0.86, and lower axial loads-7.9 kN vs. 39, respectively. The equivalent power of the RESP is 7.6 kW, the ESP is 11.9 kW, and the specific power consumption is 15.4 and 23.9 kW·h/(m3·day), respectively.В  The results obtained will allow more successful application of a new promising technology for cost-effective operation of low-yield well stock.

References

1. Vdovin E.Yu., Lokshin L.I., Lur'e M.A. et al., New technologies for operating low-yield and periodic stock (In Russ.), Inzhenernaya praktika, 2017, no. 11, pp. 40–43.

2. Zhu Shijia, Lei Derong, Liu He, Hao Zhongxian, Zhang Lixin, Application of Low-Carbon, rodless artificial lift in low-production, low-permeability oilfields,

SPE-192071-MS, 2018, https://doi.org/10.2118/192071-MS.

3. Aipov R.S., Valishin D.E., Leont'ev D.S., Mathematical model of the plunger pump with a cylindrical linear induction motor in the drive (In Russ.), Nauchnyy zhurnal KubGAU = Scientific Journal of KubSAU, 2014, no. 96(02), pp. 573–583.

4. Bakhtizin R.N., Urazakov K.R., Latypov B.M., Ishmukhametov B.Kh., Fluid leakage in a sucker-rod pump with regular micro-relief at surface of the plunger (In Russ.), Neftegazovoe delo, 2016, V. 14, no. 4, pp. 33–39.

5. Urazakov K.R., Bogomol'nyy E.I., Seytpagambetov Zh.S., Gazarov A.G., Nasosnaya dobycha vysokovyazkoy nefti iz naklonnykh i obvodnennykh skvazhin (Pumping of high-viscosity oil from inclined and watered wells), Moscow: Nedra Publ., 2003, 302 p.

6. Timashev E.O., Urazakov K.R., Dynamics of flow rate and pressure in the tubing of plunger pumps with downhole drive (In Russ.), Problemy sbora, podgotovki i transporta nefti i nefteproduktov, 2019, no. 5, pp. 45–55.

7. Volkov M.G., Khalfin R.S., Brot A.R. et al.,В  Method of calculation and selection of designs installations of PCP pumps with submersible and surface drive for oil production (In Russ.), Oborudovanie i tekhnologii dlya neftegazovogo kompleksa, 2018, no. 6, pp. 32–37.

8. Certificate of official registration of a computer program no. 2006614402. OOO "YUNG-NTC Ufa". RosPump, Authors: Urazakov K.R., Bondarenko K.A., Khabibullin R.A.

The article describes a pilot version of a complex method for calculating installations with a electrical submersible reciprocating pump for oil production, based on mathematical models of individual elements of the installation and the well. The main differences between the calculation of parameters of a submersible plunger pump and a rod pump are considered. Algorithms are given for calculating the feed, the speed of the plunger during the up and down stroke, the power consumption and the equivalent power. The design features of a submersible plunger pump are determined by the absence of a rod column, an increased diameter of the valves, another point of application of axial loads, a higher speed of movement of the plunger, a minimum "dead" space and the presence of temporary pauses between the moves of the plunger. The main operating parameters and power factors that form the axial loads on the plunger pump rod in the phases of the swing cycle are considered. The method was tested by calculating the operating parameters of the installation. The results of the calculations demonstrate the independence of the plunger speed and power consumption during the up or down stroke from the number of swings for a given current frequency and length of the plunger stroke. In this case, the feed, the equivalent power and the duration of the pause between the double moves depend on the number of swings. The ratio of operating parameters of installations with a electrical submersible reciprocating pump, calculated according to the developed method, and installations of rod pumps according to the RosPump program, as well as installations of electric centrifugal pumps is shown. For the calculation conditions, in comparison with SRP, the RESP has a higher feed coefficient-0.92 vs. 0.86, and lower axial loads-7.9 kN vs. 39, respectively. The equivalent power of the RESP is 7.6 kW, the ESP is 11.9 kW, and the specific power consumption is 15.4 and 23.9 kW·h/(m3·day), respectively.В  The results obtained will allow more successful application of a new promising technology for cost-effective operation of low-yield well stock.

References

1. Vdovin E.Yu., Lokshin L.I., Lur'e M.A. et al., New technologies for operating low-yield and periodic stock (In Russ.), Inzhenernaya praktika, 2017, no. 11, pp. 40–43.

2. Zhu Shijia, Lei Derong, Liu He, Hao Zhongxian, Zhang Lixin, Application of Low-Carbon, rodless artificial lift in low-production, low-permeability oilfields,

SPE-192071-MS, 2018, https://doi.org/10.2118/192071-MS.

3. Aipov R.S., Valishin D.E., Leont'ev D.S., Mathematical model of the plunger pump with a cylindrical linear induction motor in the drive (In Russ.), Nauchnyy zhurnal KubGAU = Scientific Journal of KubSAU, 2014, no. 96(02), pp. 573–583.

4. Bakhtizin R.N., Urazakov K.R., Latypov B.M., Ishmukhametov B.Kh., Fluid leakage in a sucker-rod pump with regular micro-relief at surface of the plunger (In Russ.), Neftegazovoe delo, 2016, V. 14, no. 4, pp. 33–39.

5. Urazakov K.R., Bogomol'nyy E.I., Seytpagambetov Zh.S., Gazarov A.G., Nasosnaya dobycha vysokovyazkoy nefti iz naklonnykh i obvodnennykh skvazhin (Pumping of high-viscosity oil from inclined and watered wells), Moscow: Nedra Publ., 2003, 302 p.

6. Timashev E.O., Urazakov K.R., Dynamics of flow rate and pressure in the tubing of plunger pumps with downhole drive (In Russ.), Problemy sbora, podgotovki i transporta nefti i nefteproduktov, 2019, no. 5, pp. 45–55.

7. Volkov M.G., Khalfin R.S., Brot A.R. et al.,В  Method of calculation and selection of designs installations of PCP pumps with submersible and surface drive for oil production (In Russ.), Oborudovanie i tekhnologii dlya neftegazovogo kompleksa, 2018, no. 6, pp. 32–37.

8. Certificate of official registration of a computer program no. 2006614402. OOO "YUNG-NTC Ufa". RosPump, Authors: Urazakov K.R., Bondarenko K.A., Khabibullin R.A.

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