FIELD: oil and gas industry.
SUBSTANCE: method involves extraction of a downhole product by an electric centrifugal pump (ECP) and performance of maintenance and repair work including lowering and lifting operations, flushing-out and gauging of the well, de-colmatation and commissioning of the well. At failure of tightness of a production string, non-tightness is isolated by installation of a packer on the level below the tightness failure interval. Investigation of the production string with detection of the non-tightness interval and scraping of the surface for the packer is performed. Installation of downhole equipment is performed on the well surface, and it is lowered at a certain speed into the well during the installation process. A power cable end is passed through a cable entry of the packer and tightly attached to an ECP drive. The packer is tightly attached to the tubing string of downhole equipment by means of a fixed axial connection. A knock-off valve is screwed onto the packer; the tubing string is connected by screws to a reference branch pipe and the tubing string. The tubing string by means of an adjustable branch pipe with a thread is tightly fixed by a face plate in the well head, and the well is brought into the operating mode by gradual increase of ECP rotation speed under supervision of parameters of the downhole product by means of a telemetric system.
EFFECT: improving well operating efficiency.
9 cl, 1 dwg
