Roller Kelly Bushing is one of common wellhead tools. It can be applied to rotary table from 17 1/2″ to 49 1/2″
Specification of Roller Kelly Bushing
|
Kelly Size
|
(mm)
Elevation
|
(mm)
Bedplate Size
|
Tapering
|
|||
|
in
|
mm
|
Top
|
Lower
|
Opposite Side
|
Large End
|
|
|
3 1/2
|
88.9
|
406
|
356
|
332
|
φ332
|
1: 3
|
|
4 1/4
|
107.95
|
|||||
|
5 1/4
|
133.35
|
|||||