方钻杆旋塞阀
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。方钻杆旋塞阀分为上部方钻杆旋塞阀和下部方钻杆旋塞阀两种。上部方钻杆旋塞阀用于水龙头下端和方钻杆上端之间，下部方钻杆旋塞阀用于方钻杆下端和钻杆上端或方钻杆保护接头的上端之间。用专用扳手按指示要求转动操作键90度即可实现开关。在钻井作业中，为避免井喷恶***故的发生，均应在方钻杆上、下两端组接方钻杆旋塞阀。
Kelly Cock Valve
Kelly Cock Valve which is a manual control valve in drilling string cycle system, is one of the effective tools
for preventing is divided into upper kelly cock valve and lower kelly cock valve. Upper kelly cock is
located at the position between lower end of swivel and the top of kelly stem.Lower kelly cock is located
at the position between lower end of kelly stem and drilling rod or kelly stem s***er sub.With special spanner
according to instruction and requirement to roll operational key 90 degree, so that can achieve to open and
close. In order to ***oid blowout, it should be assembled kelly cock valve on two ends of kelly stem.
上部方钻杆旋塞阀技术参数
Specification of Upper Kelly Cock Valve
|
型 号 Type |
外 径 O.D. (mm) |
水眼直径 Water Hole Diameter (mm) |
接 头 螺 纹 Connection |
工 作 压 力 Working Pressure (Mpa) |
适 用 范 围 Suitable Range |
|
CS146 |
146 |
50 |
4 1/2″REG-LH |
35 70 105 |
四方、六方方钻杆 Tetragonal and Hexagonal kelly |
|
CS200 |
200 |
76 |
6 5/8″REG-LH |
35 70 105 |
下部方钻杆旋塞阀技术参数
Specification of Lower Kelly Cock Valve
|
型 号 Type |
外 径 O.D.(mm) |
水眼直径 WaterHole Diameter(mm) |
接头螺纹 Connection |
工 作 压 力 Working Pressure (Mpa) |
适 用 范 围 Suitable Range |
|
XS105 |
105 |
41 |
NC31 |
35 70 105 |
四方、六方方钻杆 Tetragonal and Hexagonal Kelly |
|
XS121 |
121 |
50 |
NC38 |
35 70 105 |
|
|
XS127 |
127 |
50 |
NC38 |
35 70 105 |
|
|
XS165 |
165 |
61 |
N***6 |
35 70 105 |
|
|
XS178 |
178 |
71 |
NC50 5-1/2FH |
35 70 105 |