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The drilling tool

The drilling tool

Kelly Valve(Kelly Cock)

TIME:2017/3/21 14:45:02

方钻杆旋塞阀

Kelly Valve(Kelly Cock)

方钻杆旋塞阀是钻柱循环系统中的手动控制阀,是防止井喷的有效工具之一.方钻杆旋塞阀分上部方钻杆旋塞阀和下部方钻杆旋塞阀。上部方钻杆旋塞阀连接于水龙头下端和方钻杆上端之间下部方钻杆旋塞阀连接于方钻杆下端和钻杆上端或方钻杆保护接头的下端之间方钻杆旋塞阀操作非常简单,用专用扳手按指示要求转动90度即可实现开或关。在钻井作业中,应在方钻杆上、下两端组接方钻杆旋塞阀

Kelly valve is a manually operated ball type drill stem valve; it is divided into upper Kelly valve and lower Kelly valve. The upper Kelly valve is connected between lower end of swivel and upper end of Kelly; the lower Kelly valve is connected between upper end of drill pipe and lower end of Kelly or connected between lower end of Kelly saver subs. The Kelly valve can be opened on or closed off by only turning the special operating wrench at 90° according to indicating direction. During drilling operation, the Kelly valve shall be connected at upper end and lower end of Kelly

Specifications

型号
Model

外径 O.D.(mm)

螺纹类型Connection
API

内径I.D.(mm)

密封压力
Working Pressure
(Mpa)

CS 146

146

4 1/2 REG LH

50

68.6

CS 200

200

6 5/8 REG LH

76.2

68.6

XS105

105

NC31

40

68.6

XS121

121

NC38

50.8

68.6

XS127

127

NC38

50.8

68.6

XS140

139.7

NC40

57.2

68.6

XS165

159

NC46

61

68.6

XS165

165

NC46

61

68.6

XS178

178

NC505 1/2FH

71.4

68.6