FIELD: tubing production.
SUBSTANCE: dual tubing installation for selective completion of two reservoirs by one well includes the main and additional drives. The installation contains a packer installed between the upper and lower reservoirs. The installation includes main tubing string, connected with the below-packer space of the well, and additional tubing string, connected with the behind-the-packer space of the well, tubing strings are with rod pumps. The tubing strings are fixed to the wellhead with double-hole fittings. A parallel anchor is installed on the main tubing string. Below the parallel anchor, at the inlet of the additional tubing string, there is a sand anchor with a tubing container and a spherical plug. The spherical plug has a thread in the upper part for connection to the tubing of the container and its sealing for the mechanical impurities accumulation. The parallel anchor is made in the form of a hemicylindrical body with a longitudinal channel that provides fixation of the main tubing string. A longitudinal hemispherical groove with rounded corners is made on the inner surface of the parallel anchor.
EFFECT: simplification of the design and enhancement of the reliability of the dual tubing installation for selective completion of two reservoirs by one well, protection against clogging by mechanical impurities, maintenance simplification, elimination of possibility of twisting an additional tubing string, reduction of the repair duration.
1 cl, 2 dwg
