FIELD: oil and gas production industry, particularly for sealing or packing boreholes or wells.
SUBSTANCE: wellhead equipment comprises casing head having body with radial channels, flange, connection members, suspension means and casing pipe sealing means, as well as tubing head. The body and the flange are detachable. The flange is made as round rim and has at least two through radial horizontal channels. Safety subs are screwed in the radial horizontal channels. Wellhead equipment variants differ one from another due to providing different designs of casing head flanges, upper body bushes, axial connection units, which connect upper and lower bushes, tube heads and places of casing head body installation.
EFFECT: provision of universality, reduced size, increased reliability and simplified structure.
12 cl, 6 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| HYDRAULIC JACK BLOCK FOR CARRYING OUT REPAIR AND RESTORATION WORK TO REPLACE WELLHEAD EQUIPMENT | 2022 |
|
RU2780181C1 |
| COLUMN HEAD | 2007 |
|
RU2348791C2 |
| METHOD OF CONNECTIONS OF WELLHEAD WITH SUPPLEMENTARY STRINGS (VERSIONS) | 2010 |
|
RU2433247C1 |
| METHOD FOR PRESSURIZATION OF INTER-COLUMN SPACE OF OIL AND GAS EXTRACTIVE WELL MOUTH BETWEEN CONDUCTOR AND OPERATION COLUMN AND DEVICE FOR REALIZATION OF SAID METHOD | 2003 |
|
RU2249093C1 |
| DEVICE FOR TREATMENT OF CAVITY OF ANNULAR SPACE OF A CASING STRING | 2019 |
|
RU2733341C2 |
| DEVICE FOR BINDING CASING COLUMNS ON WELL MOUTH (VARIANTS) | 2002 |
|
RU2230177C1 |
| COLUMN HEAD | 1997 |
|
RU2146000C1 |
| SEALING DEVICE FOR TUBING-CASING ANNULUS ON WELL HEAD | 2014 |
|
RU2560452C1 |
| WELL COLLAR EQUIPMENT WITH ADDITIONAL CASING STRING | 2002 |
|
RU2225934C2 |
| DEVICE FOR BLOCKING-OFF A WELL | 0 |
|
SU1350333A1 |
