FIELD: oil and gas production.
SUBSTANCE: valve consists of cylinder case with stepped hole and radial (overflow) hole. There can be several overflow holes. A holder in form of a segment is installed in the stepped hole of the case. In the holder there is made a cylinder cavity wherein there is installed a seat, ball, and a return spring positioned between a bottom of the cylinder cavity and the ball pressing the ball to a stop made in form of a cage with lengthwise holes for liquid flow. The seat is set in the stepped hole of the cylinder cavity and is clutched with the stop installed in the holder, by means, for example, of threaded connection. A threaded radial hole coaxial to the radial hole of the case for flow of liquid is made in the holder. A screw with filtering holes and a hole for flow of liquid is screwed into the holder through the radial hole of the case. The screw maintains the holder in radial and axial directions.
EFFECT: raised reliability and resource of valve operation.
2 cl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| OVERFLOW DRILL BALL VALVE | 2016 |
|
RU2646648C1 |
| ALL-PURPOSE VALVE FOR DOWNHOLE MOTOR | 2006 |
|
RU2303116C1 |
| OVERFLOW CHECK VALVE | 2011 |
|
RU2466265C1 |
| OVERFLOW VALVE FOR HOLE-BOTTOM MECHANISMS | 0 |
|
SU898028A1 |
| DRILLING OVERFLOW VALVE SHUT-OFF DEVICE | 2015 |
|
RU2600471C1 |
| VALVE DEVICE FOR BORE ENGINE | 2002 |
|
RU2224866C1 |
| RELIEF VALVE OF DOWNHOLE MOTOR | 2007 |
|
RU2333334C1 |
| DRILL STRING OVERFLOW VALVE WITH SCREW WELL BOTTOM ENGINE | 2016 |
|
RU2641800C1 |
| BACK VALVE FOR DRILL STRING | 2010 |
|
RU2427702C1 |
| OVERFLOW VALVE | 1989 |
|
SU1834343A1 |
