FIELD: engines and pumps.
SUBSTANCE: invention relates to jet equipment, mainly to downhole jet pumping units for logging operations. Method of well jet pump unit operation consists in the fact that lowering to the well on the tubing string the layout consisting of packer and support casing installed on pump-compressor pipes for plug-in jet pump with axial profiled through channel, in which there is a seat for installation of a plug-in jet pump, and bypass channel of working medium supply, in which a check valve is installed, at the same time from below on the housing for the plug-in jet pump a shank with an inlet funnel is preliminarily installed, packer is installed on shank, assembly is lowered to well mouth, inlet funnel is installed above roof of perforated formation, well logging instrument is lowered into well on logging cable and during lowering method background record of geophysical parameters is performed from funnel to bottomhole, method includes making the bottomhole and determining the location of the packer, extracting the logging tool to the surface, performing the packer setting and pressing, pumping hydraulic fracturing fluid through the axial profiled passage channel of the housing for the plug-in jet pump into the formation, further after the well deposit, the axial profiled passage channel of the housing for the plug-in jet pump and tubing string are flushed from residues of hydraulic fracturing fluid proppant by supply of working medium under pressure by pump unit through annular space between tubing string and well casing string and bypass channel of housing for plug-in jet pump.
EFFECT: higher efficiency and reliability of well jet assembly operation.
1 cl, 3 dwg
