WELL OPERATION METHOD Russian patent published in 2016 - IPC E21B43/00 E21B43/22 E21B29/00 

FIELD: oil industry.

SUBSTANCE: invention relates to oil industry and can be used in operation of outdated and worn-out well with defective production strings. During well operation, method comprises lowering first column of tubing string with packer. Packer is placed below discontinuity of production string, then packer is installed. Second string is lowered - low string inside first column of tubing string with packer. Product is extracted at second small tubing pipes. For performance of operations, method includes selecting well producing oil emulsion with low flow rate to be reproduced by sucker-rod pump in a small column of tubing string. Pump used in small flow string pipes is a rod pump which provided well flow rate, existing before operations. Equipment is mounted in well. Method comprises holding for separation of oil emulsion in well on water and oil and formation of aqueous medium at pump inlet. From well head along inner wall of first column of tubing string is dosed demulsifier. Pump is put into operation. Well fluid level is maintained near pump.

EFFECT: technical result is higher efficiency of oil production.

1 cl, 1 ex