Page 175 - Well Control for Completions and Interventions
P. 175
Well Control Surface Equipment 167
Figure 4.20 Pipe ram for a Cameron type “U” preventer. Source: Image courtesy of
Schlumberger.
Figure 4.21 Variable bore ram. Source: Image courtesy of Schlumberger.
construction, using a feedable rubber packing element. However, the
design means the ability to hang the tubing string from the ram is severely
limited (Fig. 4.21).
4.8.3 Blind rams/shearing blind rams
Blind rams have a flat elastomer face and are designed to shut-in the well
when there is no pipe across the BOP stack. Blind/shear rams are
