FIELD: oil and gas producing industry. SUBSTANCE: device includes sealing members located on two levels and having a gate chamber between them. Blind and pipe rams, sealing rings with spring clamps or clamping rings, and traditional sealing rings are employed in various combinations as the sealing member. EFFECT: enlarged operating capabilities. 4 cl, 7 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| MULTIFUNCTIONAL DRIVE OF RAM-TYPE BLOWOUT PREVENTER | 1993 |
|
RU2097527C1 |
| BLOWOUT PREVENTER | 1991 |
|
RU2008434C1 |
| MULTIGATE PREVENTER | 1991 |
|
RU2013520C1 |
| UNIVERSAL DRIVE OF SLIP-TYPE PREVENTER | 1993 |
|
RU2085701C1 |
| BLOWOUT PREVENTER | 0 |
|
SU1620606A1 |
| BLOWOUT PREVENTER | 0 |
|
SU1735570A1 |
| BLOWOUT PREVENTER | 0 |
|
SU1744237A2 |
| BLOWOUT PREVENTER | 0 |
|
SU969888A1 |
| DEVICE FOR SINKING AND LIFTING OF INSTRUMENTS FROM VERTICAL AND INCLINED HOLES | 1990 |
|
RU2007555C1 |
| PREVENTER | 1990 |
|
RU2079634C1 |
