METHOD OF OIL WELL OPERATION Russian patent published in 2018 - IPC E21B43/14 

FIELD: oil and gas industry.

SUBSTANCE: invention can be used in the operation of the oil well equipped with a rod or electric centrifugal pump on multi-layer oil deposits. According to method, product of lower formation is taken through intake branch pipe passing through packer separating production formations. Withdrawal of the upper formation product is carried out through the side opening in the receiving branch pipe. Measurement of liquid and watering flow rate is carried out performed on the well day surface. Withdrawal of each formation product as well as measurement of their production rates and watering on the day surface are performed alternately after switching the shut-off body that communicates the formations with the pump intake. The pump is selected based on necessity to exceed its supply over the planned oil formation production rates in cycles of their connection, equal the underproduction of oil from formations in disconnection cycles. Periods of formation switching are selected based on the conditions to ensure scheduled oil sampling from each formation in accordance with their productivity.

EFFECT: providing the possibility of separate accounting of liquids extraction from the formations and control of products sampling from each formation.

4 dwg