METHODS AND DEVICE FOR DETERMINATION OF WELL PUMPS PRODUCTION VOLUME Russian patent published in 2020 - IPC E21B43/12 E21B47/00 E21B47/02 

FIELD: drilling of wells.

SUBSTANCE: group of inventions relates to downhole pumps, and more specifically to methods and apparatus for determining volume of production of downhole pumps. Method involves measuring the first amount of fluid extracted from the well by the pump during the first pump stroke. Pump first dynamogram is calculated based on first stroke. First area of first pump dynamometer is determined. Ratio of proportionality of pump leakage is determined on the basis of the first amount of extracted liquid and the first area. Second pump dynamogram is calculated based on pump second stroke. Second area of the second pump dynamometer is determined. Second amount of fluid produced by pump during second stroke is determined based on coefficient of leakage proportionality and second area. Device includes a housing and a processor located in the housing, wherein the processor is designed to perform the above actions.

EFFECT: technical result is higher efficiency of well pump production volume determination.

20 cl, 12 dwg