Offshore ram-type BOP
Extend proven high-quality, reliable BOP design expertise to a lighter-weight design.
Cameron DSI* dual-string interlocking shear rams are similar in design to DS* dual-string shear rams, except for the interlocking feature of the rams. Arms on the upper ram prevent any vertical separation between the lower and upper blades.
The interlocking feature provides the capability of shearing wireline and braided cable with zero tension in the line. DSI rams do not use a foldover shoulder, and thus have the capacity to shear larger diameter pipe and casing.
The DSI ram shearing action is the same as that for DS rams except that when the rams first engage, all separation between the blades is eliminated.
|Type||Size, in||Rating, psi||Wireline Capable|
|Type U and UM BOPs||Size, in 7 1/16||Rating, psi 3,000–10,000||Wireline Capable Yes|
|Type U and UM BOPs||Size, in 135/8†||Rating, psi 3,000–10,000||Wireline Capable Yes|
New DSI dual-string interlocking shear rams enable greater performance in U and UM BOPs.
Prevent vertical separation between lower and upper blades.