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Kelly Cock Valve

Category: Drilling tool(Sub)
Key words:Drilling tool(Sub)Kelly Cock Valve
Service Hotline:+86-513-87635480
Retail price
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Number of views:
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Product description
Parameters

The kelly cock valve ,which is a manually operated ball valve run in the I.D of drill string ,is one of effective tool for preventation from blowout .The kelly cock is divided into upper kelly cock valve and lower kelly cock . The upper kelly cock is connected between lower end of swivel and upper end of kelly. The lower kelly cock is connected between upper end of drillpipe and lower end of kelly or connected between lower end of kelly saver subs. The kelly cock features a simple operation, the kelly cock can be opened on or closed off by only turning the special operating spanner at 90 degrees according to indicating direction.During drilling operation,in order to avoid serious well kick or blowout accident, the kelly cock shall be connected at upper end and lower end of kelly.

Table 1. Upper Kelly Cock:

Type

OD.
(mm)

Thread connection
API (in)

I.D.
(mm)

Max.sealing pressure
(Mpa)

CS146

146

4  1/2REG LH

57

68.6

CS200

200

6  5/8REG LH

75

68.6

Table 2 Lower Kelly Cock:

Type

OD.
(mm)

Thread connection
API

I.D.
(mm)

Max.sealing pressure
(Mpa)

XS105

105

NC31

40

68.6

XS121

121

NC38

51

68.6

XS127

127

NC38

51

68.6

XS178

178

NC50

70

68.6

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