PUMP DEVICE FOR SIMULTANEOUS SEPARATE OPERATION OF TWO BEDS IN A WELL Russian patent published in 2007 - IPC E21B43/14 

FIELD: oil extractive industry, in particular, well pump devices.

SUBSTANCE: device contains a column of lifting pipes, a column of bars, packer, tail and differential pump with hollow plunger, while suction and force valve of upper section of differential pump are mounted on the side. In accordance to invention column of bars is made hollow and is connected hermetically to plunger of pump so that hollows of column of bars and plunger are connected, and upper section is provided with bypass channel and may connect by this channel, during downward movement of column of hollow bars with plunger, to internal space of lifting pipes through force valve, which is positioned in immediate proximity of suction valve. Below the plunger a rod is mounted with possible axial movement and forced simultaneous opening of suction and force valve of lower section of device for simultaneous separate operation of two beds in a well.

EFFECT: possible separate measuring of debit of each bed, and separate field extraction of product of beds when necessary, and also possible inspection of each bed during operation without shutdown of well and extraction of pump.

2 cl, 1 dwg