FIELD: oil industry.
SUBSTANCE: invention relates to the oil industry, in particular to the production of well products with increased sand production and mechanical impurities. Sucker-rod pump unit with parallel pipe strings for operation of wells with increased sand production consists of a sucker-rod pump (SRP) lowered on a tubing string and having the possibility of being actuated through the sucker rod string. Unit is equipped with a production tubing string with a check valve in the lower part located parallel to the tubing string. Tubing string is filled with a liquid with density less than that of the well product, is closed in the upper part and is interconnected with the production string through the parallel anchor assembly located directly above the SRP, which is equipped with a protective bushing.
EFFECT: preventing sand ingress from above into the gap of the plunger pair of the pump, into the inner cavity of the plunger and onto the delivery valve.
1 cl, 2 dwg
