FIELD: oil and gas extractive industry.
SUBSTANCE: device has hollow cylindrical body with aperture for letting through geophysical device with cable into well. In aperture of cylindrical body a replaceable pressurizing insert is placed. Insert is fixed and provided with two collars moveable in radial direction, each of which is supported by round segment rigidly connected to rod. By its threaded end rod is let out through aperture made in round disk in upward direction and is connected to press nut providing for transfer of compacting collars into compressed state in case of pressurization of well mouth. Insert is provided with rotating disk with cutting edge placed below collars under round segments and connected to shaft let out upwardly along plane of detaching of collars and round segments. Aperture of cylindrical body is made conical. Insert is fixed by moveably cylindrical stop.
EFFECT: higher speed of operation, higher reliability, higher safety.
10 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| WELL MOUTH PRESSURIZER | 2003 |
|
RU2249092C2 |
| WELLHEAD SEALING DEVICE | 2002 |
|
RU2212515C1 |
| DEVICE FOR WELLHEAD SEALING | 2001 |
|
RU2191884C2 |
| RAM-TYPE BLOWOUT PREVENTER FOR WELLS WITH TWO-ROW STRING PIPE | 2019 |
|
RU2713032C1 |
| SEALING FITTINGS | 1998 |
|
RU2160352C2 |
| RAM-TYPE BLOWOUT PREVENTER | 2019 |
|
RU2719887C1 |
| WELLHEAD SEALING DEVICE | 2001 |
|
RU2191248C2 |
| RAM PREVENTER FOR WELLS WITH INCLINED MOUTH | 2019 |
|
RU2724703C1 |
| PIPE SEALING UNIT FOR DIE PREVENTER | 2001 |
|
RU2209925C2 |
| RAM-TYPE BLOWOUT PREVENTER | 2001 |
|
RU2196874C2 |
