Examples of BOP Configuration for the diferent hole sizes.

|
Hole Size |
26in |
17.1/2in / 16in |
12.1/4 / 8.1/2in |
6in |
Workover |
|
Diverter |
fitted |
fitted |
|
|
|
|
BOP size / rating |
|
|
13.5/8in |
13.5/8in |
13.5/8in |
|
BOP’s top to bottom |
|||||
|
Annular |
|
fitted |
fitted |
fitted |
fitted |
|
Pipe Rams |
|
5in |
5in |
3.1/2in or variable |
2.7/8in – 5in variable |
|
Blind/Shear Rams |
|
fitted |
fitted |
fitted |
fitted |
|
Choke/Kill Lines |
|
fitted |
fitted |
fitted |
fitted |
|
Pipe Rams |
|
5in |
5in |
3.1/2in or variable |
2.7/8in – 5in variable |
Notes
– If taper strings are used variable bore rams are recommended.
– Casing rams shall be fitted prior to running casing.