FIELD: oil and gas industry.
SUBSTANCE: invention relates to oil producing industry; it can be used for separation and control of fluid flows or pumping of working fluid to the well in process of recovery of one or several strata. Downhole pump unit includes pump, tubing string, packer or packers, one or several regulated bypass devices. At that the unit is equipped additionally with one or several inserts fixed hermetically inside tubing string, separating elements fixed hermetically in annular space between the insert and tubing string, bypass ports made in tubing stream below and above the packer or between packers and below and above the packer. At least in one bypass port there is regulated bypass device; at that bypass ports are connected hydraulically between themselves and the pump while packer and packers are installed at tubing string between separating elements.
EFFECT: increasing efficiency of recovery for several strata, providing possibility of control over recovery of strata and direct downhole measurements of yield and watercut for separate strata.
18 cl, 5 dwg
