METHOD FOR DETECTING THE INFLOW OR LEAKAGE OF FLUID IN A WELL AND DETECTING CHANGES IN THE EFFICIENCY OF THE FLUID PUMP

FIELD: mining industry.SUBSTANCE: group of inventions relates to the field of detecting flow anomalies in the drilling fluid supply and circulation system. The method for identifying the abnormal flow of drilling fluid includes determining the operating speed of the drilling fluid pump, the outlet of which is connected to the pipe string in the wellbore, moving the drilling fluid returned from the wellbore, displaced by the drilling fluid pump through the pipe string, to the filling tank, moving the returned drilling fluid from the filling tank to the drilling fluid storage tank using the first pumping pump, the flow rate of which is directly related to the measurable operating speed of the first pumping pump, the measurement of the first parameter related to the volume of drilling fluid in the filling tank, the movement of drilling fluid from the drilling fluid storage tank to the metering tank using the second export pump, and the flow rate of the second pumping pump is directly related to the measurable operating speed of the second export pump, and the metering tank is communicated through the fluid medium with the inlet of the drilling fluid pump, measurement of the second parameter related to the volume of drilling fluid in the metering tank, and identification of the abnormal flow of drilling fluid by detecting changes in the measured operating speed of the first pumping pump, while the operating speed of the first export pump is adjusted so as to maintain the first parameter essentially constant.EFFECT: method ensures the involvement of existing devices of drilling mud circulation systems already located on drilling rigs, and the reduction of the number of additional equipment.18 cl, 9 dwg Группа изобретений относится к области обнаружения аномалий потока в системе подачи и циркуляции бурового раствора. Способ идентификации аномального потока бурового раствора включает определение рабочей скорости насоса бурового раствора, выход которого соединен с трубной колонной в стволе скважины, перемещение возвращаемого из ствола скважины бурового раствора, вытесненного насосом бурового раствора через трубную колонну, в доливочный резервуар, перемещение возвращенного бурового раствора из доливочного резервуара в резервуар для хранения бурового раствора с использованием первого перекачивающего насоса, скорость потока которого непосредственно связана с измеримой рабочей скоростью первого перекачивающего насоса, измерение первого параметра, связанного с объемом