| 摘要 |
FIELD: mining.SUBSTANCE: group of inventions relates to sealing devices and methods for sealing zone of disturbance in well shaft. Sealing devices comprise tubular element, expanding element and deformable sealing element, at that by fluid pressure is expanded or inflation of expanding element which switches deformable sealing element from its lowered into well shape in form of hardening. Control action, for example, change of temperature, acts on deformable sealing element, thus changing shape of sealing element, and control action is provided to keep shape of hardened sealing element; after that, pipe element and expanding element can be removed, leaving only deformed hardened sealing element in well shaft for sealing zone of disturbance.EFFECT: isolation of sections of well shaft.18 cl, 6 dwg |
