Inner blowout preventer (IBOP) is a necessary blowout controlling tool appointed by the International Association of Drilling Contractors (IADC) in drilling. When well kick occurs in tripping out, the IBOP need to be used, because many drill pipes should be run in well hole at this time but only by relying on a check valve in drill string can run them in.
The inner blowout preventer as the figure is a new developed product by our company. Through using in many internal and external oil fields, it is proved that its structure is simple and the performance has been up to the level of similar import products.
|
Connection
|
O.D
(in)
|
I.D
(in)
|
length
(in)
|
Weight
(Kg)
|
|
2-3/8IF
|
3-3/8″-3-3/4″
|
1-1/2″
|
26″
|
27
|
|
2-7/8IF
|
4-1/8″-4-1/4″
|
1-3/4″
|
28″-30″
|
40
|
|
3-1/2IF
|
4-3/4″-5-1/4″
|
2″
|
30″-31″
|
57
|
|
4IF
|
6-1/4″-6-3/4″
|
2-1/2″
|
33″-34″
|
110
|
|
4-1/2IF
|
6-3/8″-7″
|
2-13/16″
|
33″-34″
|
120
|
|
5-1/2FH
|
7″-7-1/2″
|
2-13/16″
|
33″-34″
|
140
|
|
6-5/8REG
|
8″
|
2-13/16″
|
34″
|
180
|
|
7-5/8REG
|
9-1/2″
|
2-13/16″
|
34″
|
220
|