US 11,859,628 B2
Method of preventing damage to a pump
Age Hofstad, Mjoendalen (NO); Randhir Mohite, Drammen (NO); Sergio Walsh Goldvag, Dilling (NO); Pal Erik Tysvaer Soerensen, Drammen (NO); Tarje Olderheim, Billingstad (NO); Dag Elvebakken, Heggedal (NO); Bastiaen Van Der Rest, Gullaug (NO); Einar Marius Haaverstad, Slependen (NO); and Rune Pettersen, Tranby (NO)
Assigned to AKER SOLUTIONS AS, Lysaker (NO)
Appl. No. 18/030,504
Filed by AKER SOLUTIONS AS, Lysaker (NO)
PCT Filed Oct. 8, 2021, PCT No. PCT/NO2021/050209
§ 371(c)(1), (2) Date Apr. 6, 2023,
PCT Pub. No. WO2022/075856, PCT Pub. Date Apr. 14, 2022.
Claims priority of application No. 2016035 (GB), filed on Oct. 9, 2020; application No. 2016038 (GB), filed on Oct. 9, 2020; application No. 2016039 (GB), filed on Oct. 9, 2020; and application No. 2016040 (GB), filed on Oct. 9, 2020.
Prior Publication US 2023/0366409 A1, Nov. 16, 2023
Int. Cl. F04D 27/02 (2006.01); F04D 27/00 (2006.01)
CPC F04D 27/0223 (2013.01) [F04D 27/001 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method for preventing damage to a multiphase pump, the method comprising:
measuring a differential pressure of a fluid across the multiphase pump over a time period;
measuring an axial position of a rotor of the multiphase pump over the time period;
calculating a pressure fluctuation by measuring a difference between a maximum value of the differential pressure which was measured and a minimum value of the differential pressure which was measured over the time period;
calculating a dynamic axial position by measuring a difference between a maximum value of the axial position of the rotor which was measured and a minimum value of the axial position of the rotor which was measured over the time period;
comparing the pressure fluctuation of the multiphase pump which was calculated with an expected pressure fluctuation value;
comparing the dynamic axial position of the rotor which was calculated with an expected dynamic axial position value; and
selecting an operating condition of the multiphase pump from one of an expected operating condition, a surge operating condition, and a choke operating condition based on the comparison of the pressure fluctuation of the multiphase pump which was calculated with the expected pressure fluctuation value, and based on the comparison of the dynamic axial position of the rotor which was calculated with the expected dynamic axial position value.