FIELD: oil, gas and coke-chemical industries.
SUBSTANCE: invention relates to oil industry and can be used for oil production. Shutoff valve is installed in the mounting nipple of the well and comprises a prefabricated housing with a central channel, a shut-off element and a control mechanism. Shut-off element consists of collet and movable mandrel, in upper part of which there are stop supports extended during axial movement of shut-off element through via slots of housing with possibility of interaction with thrust surface of mounting nipple. Control mechanism is made in the form of a spring-loaded tubular plunger having on its outer surface an annular piston and a row of longitudinal holes in the lower part, which are matched with similar holes on the assembled body to provide the valve function. Movable mandrel is connected to head of cut-off valve from above and from below is thrust against plunger. Movable mandrel has on its outer surface a row of grooves and ledges, which by means of collet and stop balls allow to occupy one of fixed positions.
EFFECT: technical result is improved reliability of valve operation ensuring uninterrupted supply of well fluid with electric motor and automatic shut-off of well fluid with pump switched off.
4 cl, 5 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| MECHANICAL PACKER | 2023 |
|
RU2821333C1 |
| SUBSURFACE SAFETY VALVE | 2017 |
|
RU2651860C1 |
| SUBSURFACE SAFETY VALVE | 2012 |
|
RU2516708C2 |
| CUTOFF VALVE | 2018 |
|
RU2672898C1 |
| BYPASS CONTROLLED VALVE | 2020 |
|
RU2730156C1 |
| WELL CUTOFF VALVE | 2018 |
|
RU2685361C1 |
| CUTOFF VALVE | 2017 |
|
RU2644312C1 |
| METHOD FOR UNDERGROUND WELL REPAIR FOR REPLACEMENT OF DOWNHOLE PUMPING EQUIPMENT WITHOUT ACTION ON FORMATION | 2015 |
|
RU2592903C1 |
| PUMPING WELL CUT-OFF SYSTEM (VERSIONS) | 2013 |
|
RU2527440C1 |
| RETURN VALVE | 2016 |
|
RU2641146C2 |
