FIELD: engines and pumps.
SUBSTANCE: group of inventions relates to a diagnostic method of a pumping unit by pairwise comparison of polished rod position values and a load thereon, controller of sucker-rod pump for use with pump unit, material data-readable computer. Diagnostics method of the pump unit by pairwise comparison of polished rod position values and load on it includes the following: monitoring by means of position sensor of at least one of angular position of pump unit cranks arm and number of revolutions per unit of time of pump unit engine, wherein said sensor is connected to transmit information with controller of sucker-rod pump of pump unit, determination by the controller of the sucker rod pump of the first value of the position of the polished rod of the pump unit based on said at least one of the angular position of the crank arm and the number of revolutions per unit time of the engine, assigning a first time value to a first position value, obtaining first load values on the polished rod from a first load sensor associated with the polished rod, by means of rod pump controller and wireless communication transmitting device, connected to this controller with possibility of information transfer, assignment of second time values corresponding to values of first load values, correcting each of the second time values to corresponding third time values based on the wireless communication delay value of said wireless communication transmitter, determining second load value associated with first position value at first time value based on first load values and third time values, comparing the second load value with the first position value to provide the rod pump controller with the possibility of obtaining a dynamometric pump map, and operation of the pump unit, based on the pump dynamometric map obtained using the second load value and the first position value.
EFFECT: technical result consists in improvement of efficiency of pump unit and accuracy of dynamometric card.
32 cl, 8 dwg
