METHOD FOR SUBSEQUENT DEVELOPMENT OF MULTISITE WELL Russian patent published in 2013 - IPC E21B43/25 E21B43/14 

FIELD: oil and gas industry.

SUBSTANCE: method involves perforation of two productive intervals, lowering to the well of a layout consisting (in an upward direction) of a setting device, a shank, a packer located below upper productive interval, a pipe string with a drain valve on the level of upper productive interval, and on the head with a tee-piece with a cutoff branch and a cutoff branch pipe above the tee-piece, packer setting, swabbing in the pipe string of lower productive formation, build-up of a recovery curve of a level for lower productive formation, evaluation of productivity of lower productive formation; filling of the layout with water after swabbing of lower productive formation through the tap and the tee-piece; waiting till water goes downwards and air upwards; air bleeding through a branch pipe, repetition of operations till the layout is filled with water; lowering to the pipe string and arrangement in the setting device of a cutoff device' creation of pressure in the pipe string and opening of the drain valve' swabbing in the pipe string of upper productive formation; build-up of a recovery curve of the level for upper productive formation; evaluation of productivity of upper productive formation, lifting of the layout out if the well, lowering of a downhole pumping equipment and operation of the well.

EFFECT: possible development of the well opening two productive formations without lowering and lifting operations for development of the second formation.

2 cl, 1 ex, 1 dwg