| 摘要 |
FIELD: engines and pumps; mining art. ^ SUBSTANCE: plant incorporates a packer, a string with a support furnished with relief openings and a mounting seat for a jet pump (JP). The JP housing has an annular shoulder to be fitted in the string support. The housing is provided with a through channel parallel to the pumped out medium feed channel. The housing top part accommodates a sealing unit with a channel to pass a logging cable with deep-well instrument. The channel feeding working medium into the JP nozzle communicates with relief openings and, via the latter, with the space around the said string. The housing lower part pumped-out medium feed channel incorporates a check valve and a guide bush fastened to the JP housing just below the said channel and accommodating a moving rod (MR) arranged parallel to the logging cable. MR upper end is arranged below the check valve locking element (LE). The yoke, through which passes the logging cable, is attached to the rod lower end. The said rod is designed to act on the locking element to be pressed out from the seat on lifting the deep-well instrument coming, in this case, in contact with the rod yoke. ^ EFFECT: expanded performances of the unit. ^ 3 dwg |
