FIELD: oil and gas industry.
SUBSTANCE: method of well operation consists in product extraction via pipe string that is supplied by electric centrifugal pump in stationary mode, well shut-down, replacement of electric centrifugal pump by electric centrifugal pump of higher capacity and product extraction via pipe string in cycle operation. Pipe string above electric centrifugal pump is equipped with two return valves located in series. Electric centrifugal pump of higher capacity is operated with pressure 5-100% more than electric centrifugal pump for stationary mode of product supply. Cycle mode of product extraction is applied from the time of electric centrifugal pump stop not more than the stop time for cycle mode during which scaling formation takes place at the operating parts of electric centrifugal pump.
EFFECT: possibility to eliminate scaling and facilitation of electric centrifugal pump starting after its shutdown.
3 ex
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