FIELD: well engineering.
SUBSTANCE: present invention relates to intrawell equipment for covering a zone inside a well in a well. The overlapping unit comprises a plurality of tubular sections which are arranged consecutively in such a way that one tubular pipeline is formed, said tubular pipe having a first terminal tubular section forming the first open end of the tubular pipeline, and a second terminal tubular section; making the second open end. The tubular section, which is mounted on the first end of the tubular section, is the first sliding metal clutch, which is more flexible than the first end of the tubular section. The tubular section, which is mounted with the second end tubular section, is in the form of a second sliding metal clutch, which is more flexible than the second end tubular section. The plurality of tubular sections is arranged between successive disjoint metal clutches in such a way that the knot has a length of 50-300 m. The disjoint metal clutch has a thickness smaller than the thickness of the other part of the tubular sections forming the tubular pipeline. An intrawell overlapping system for covering a zone inside a well in a well comprises a zone, a well borehole and/or a well tubular metal structure, and an intrawell overlapping unit. In order to implement the method for the intrawell overlapping of a zone having a length of at least 50 m, the overlapping unit of the intrawell overlapping system is connected to the in-well instrument, which closes at least part of the overlapping unit, from the inside in front of the disjointed metal clutch. The closing unit is inserted into the well bore or into the tubular metal structure of the well. A closing unit is provided in front of the zone. The pressure inside the closing unit is increased. The metal couplings are released from each side of the zone.
EFFECT: technical result is increase in the insulation reliability of zones longer than 50 m and a reduction in the size of the internal diameter of the well.
15 cl, 8 dwg
