Kelly Valve for Drill String Fluid Control
Specifications of Hook Blocks
|
Model |
O.D.(mm) |
Thread connection |
I.D. (mm) |
Working pressure(Mpa) |
|
XS-86 |
86 |
NC26 |
30 |
30,70,105 |
|
XS-105 |
105 |
NC31 |
40 |
30,70,105 |
|
XS-111 |
111 |
NC31 |
40 |
30,70,105 |
|
XS-121 |
121 |
NC38 |
44.5 |
30,70,105 |
|
XS-127 |
127 |
NC38 |
44.5 |
30,70,105 |
|
XS-140 |
140 |
NC40 |
57.2 |
30,70,105 |
|
XS-XS146 |
146 |
4-1/2 REG |
57.2/44.5 |
30,70,105 |
|
XS-159 |
159 |
NC46 |
61 |
30,70,105 |
|
XS-165 |
165 |
NC46 |
61 |
30,70,105 |
|
XS-168 |
168 |
NC50 |
71.4 |
30,70,105 |
|
XS-178 |
178 |
NC50,5-1/2 FH |
71.4 |
30,70,105 |
|
XS-XS197 |
197 |
6-5/8 REG |
76.2 |
30,70,105 |
|
XS-XS200 |
200 |
6-5/8 REG |
76.2 |
30,70,105 |
Kelly valve is a manually operated ball type valve for the drill stem, divided into upper and lower sections. 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 lower end of Kelly saver subs. The Kelly valve can be opened or closed off by simply turning a special operating wrench 90° according to indicated direction.