By-Pass Valve is a tool which goes on circulation or well control, when it happens overflowing during drilling, and drilling head water hole is blocked up, does not go on well control.
Specification of By-Pass Valve
|
Type
|
O.D.
(mm)
|
I.D.
(mm)
|
Connection
|
|
|
Upper End
|
Lower End
|
|||
|
PTF146
|
146
|
65
|
NC38
|
NC38
|
|
PTF159
|
159
|
70
|
NC50
|
NC50
|
|
PTF165
|
165
|
70
|
NC50
|
NC50
|
|
PTF178
|
178
|
75
|
NC50
|
NC50
|
|
PTF180
|
184
|
75
|
5 1/2″FH
|
NC50
|
|
PTF190
|
190
|
80
|
5 1/2″FH
|
NC50
|
|
PTF200
|
200
|
90
|
5 1/2″FH
|
NC50
|
|
PTF210
|
210
|
114
|
5 1/2″FH
|
NC50
|