INSTALLATION FOR SIMULTANEOUS-SEPARATE DEVELOPMENT OF RESERVOIRS Russian patent published in 2010 - IPC E21B43/14 

FIELD: oil and gas production.

SUBSTANCE: installation consists of tubing string, of hollow rods string, of packer installed between upper and lower reservoirs, of shank end with main channel connected to under-packer space, and of differential pump with hollow plunger equipped with corresponding suction and pressure valves. The pressure valve of the upper section is communicated with internal space of tubing via a bypass channel. An additional packer is arranged above the main one. The shank end is equipped with an additional channel coupled with between-the packers space. The upper section is equipped with an additional suction valve. One of the suction valves of the pump communicates with above-packer space; another one is connected with between-packers space via the additional channel of the shank end, while the third valve is connected with under packer space not communicating with another suction valve.

EFFECT: simultaneous-separate development of 3 reservoirs under required modes.

2 dwg