Oilfield drilling rig

Oilfield drilling rig
Category:Industrial Supplies / Mining Machine
Label:Kelly Cock Valve
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Product Description

Kelly Cock Valve


    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 O.D. (mm) Thread connection (LH) I.D. (mm) Max.sealing pressure(Mpa)
CS 146 146 4 1/2 REG 50 68.6
CS 200 200 6 5/8 REG 76.2 68.6

Table 2 Lower Kelly Cock
Type O.D. (mm) Thread connection I.D. (mm) Max.sealing pressure(Mpa)
XS105 105 NC31 41.3 68.6
XS121 121 NC38 50 68.6
XS127 127 NC38 50 68.6
XS165 165 NC46 61 68.6
XS178 178 NC50 , 5 1/2FH 71.4 68.6
Oilfield drilling rig 1

Member Information

TianHe Oil Group HuiFeng petroleum equipments Co.,Ltd
Business Nature:Manufacturer
Contact:dean (mp)
Last Online:16 Dec, 2022