FIELD: oil and gas industry.
SUBSTANCE: lower portion of a pipe production string is perforated; an artificial working face is created in an open hole of a production well at series introduction of separating liquid and light-weight cement grouting. Process well is exposed for the waiting-on-cement period. The open hole of that well is expanded; lower part of the pipe production string is cemented. The artificial working face is drilled in vertical plane; an additional casing string is lowered below the shoe of the production string and cemented to the well head.
EFFECT: improving reliability and quality of tightness of the production string of the production well.
4 cl, 2 dwg
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