FIELD: mining.
SUBSTANCE: rotating preventer contains body with rotating trunk installed therein and fixed in bearing init; and preventer also contains packing element. The latter is made in form of a thrust ring assembled on the coupling installed on a drilling column. There is cut a groove in the thrust ring, the groove is connected with the interior surface of the coupling by means of radial channels.
EFFECT: increased rate of round trip operations, increased resource of packing element.
2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| WELLHEAD ROTARY STRIPPER | 2022 |
|
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| ADAPTER OF BLOWOUT PREVENTER STUFFING BOX | 2005 |
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| EXTRACTABLE WHIPSTOCK FOR REENTRY TO THE MULTILATERAL WELL ADDITIONAL HOLE | 2018 |
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RU2677517C1 |
