DOWNHOLE PACKER SYSTEM WITH PUMP (VERSIONS) Russian patent published in 2008 - IPC E21B43/00 

FIELD: petroleum industry.

SUBSTANCE: group of inventions is referred to the well development and operation of hydrocarbon fields, i.e. to the drilled well sealing and insulation systems. The system includes pump and packer run in hole on tubing string of uniform or variable diameter designed to separate interval below the pump intake and with or without cable penetrator. Option 1 includes additional packer to separate isolated interval above the annulus and two bypasses. Tubing string of smaller diameter is run inside the tubing string and leak proof connected with bypasses. The second option of the system includes the tubing string of smaller diameter run inside the tubing string, with the lower end of the said tubing string leak-proof connected to the bypass and upper end connected to the wellhead equipment. Option 3 of the system is provided with additional packer to separate isolated interval above the annulus. Packer design allows external eccentric pipe of smaller diameter to go through in order to bypass medium from annulus under the packer to annulus above the packer. Option 4 of the system includes additional packer to separate isolated interval above the annulus. Both packers are double-barrelled. Option 5 of the system includes jet system with intake chamber installed in the smaller diameter tubing string above the pump. Option 6 of the system is provided with packer installed below the pump on the liner or previously set additional lower tubing string with safety sub on the top end.

EFFECT: higher efficiency of well operation due to separation of isolated interval from production zone and pump intake by the packers with simultaneous medium bypass.

31 cl, 18 dwg, 6 ex