METHOD FOR WELL FINISHING WITH APPLICATION OF EXPANDABLE TAIL AND ITS FURTHER CEMENTING (VERSIONS)

摘要

FIELD: oil and gas production.;SUBSTANCE: method of finishing, according to one of versions, includes insertion of tubular element with guide block into well bore, expansion of this element by unit of mandrel, engagement of guide block with mandrel unit, removal of guide block via already expanded tubular element, equipment of tubular element, which is to be expanded, with valve arranged in its wall, and expansion of specified valve in process of tubular element expansion. According to the other version, specified valve is actuated with the help of mandrel unit.;EFFECT: tight monobore completion and cementing of expanded tail.;6 cl, 47 dwg