FIELD: oil and gas production, particularly sealing or packing boreholes or wells.
SUBSTANCE: device comprises body with lid and annular groove in upper body part, longitudinal through channel having different diameters and through radial threaded channel. The annular groove is adapted to install sealing unit provided with sealing means. Device has couplings for casing and production column suspension and support ring resting upon casing pipe end. Rigid centralizer bearing coupling suspension means of production string is installed on support ring and provides preliminary casing pipe alignment with production string. Sealing unit may slide in annular groove in plane transversal to body axis. Body is provided with outer thread in lower part thereof for body screwing in casing pipe coupling. The body also has the second through radial threaded channel and annular groove for sealing unit installation arranged in upper part thereof.
EFFECT: increased operational safety, decreased labor inputs for seal production, installation and operation and increased structural simplicity.
6 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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RU2806890C1 |
