DOWNHOLE MULTI-PACKER PLANT FOR WELL COMPLETION DURING STACKED POOL DEVELOPMENT Russian patent published in 2007 - IPC E21B33/124 E21B43/14 

FIELD: hydrocarbon production, particularly for separately-simultaneous or alternate working fluid injection in one or several pools.

SUBSTANCE: plant comprises the first packer connected to flow string and lowered under upper pool, flow string disconnector arranged over the first packer and seat to receive retrievable check valve located between the first packer and flow string disconnector. Arranged below the first packer is the second packer, which creates packer section along with the first packer. The packer section includes at least two mandrels with seating units arranged therein, circulation valve and liquid flow turbulator. The seating units receive oscillator generator and removable valve or bridge plug. Turbulator is installed at lower edges of circulation orifices formed in casing pipe within the limits of oil pool to be developed. Number of packer sections included in the plant is equal to number of pools to be developed. The last packer section is between lower packer of next to last pool and one-way valve installed at flow string end.

EFFECT: possibility to optimize downhole plant parameters and to stimulate injection and/or fluid inflow simultaneously with plant installation.

8 cl, 1 dwg