Segmented Shear Ram Ledges for BOP Tubular String Cutting

The shearing ram is segmented into multiple ledges that create separate shear planes along the tubular string. This segmentation concentrates the shear force at multiple discrete locations rather than requiring a single large force application, enabling effective shearing at increased depths without requiring proportionally larger actuators.

The ledges are positioned at specific locations on the shearing ram to concentrate shear force at critical planes of the tubular string. This local concentration of shear force maximizes the effectiveness of the actuator power by applying force precisely where it is most needed to achieve shearing.

By segmenting the shearing action into multiple ledges that create separate shear planes, the system achieves greater total shear force capability without requiring a single large actuator. The segmentation allows the use of a compact actuator that applies force sequentially or simultaneously at multiple ledge locations.

The ledges extend in a dimension perpendicular to the primary shear direction, creating multiple shear planes that distribute the force requirement. This dimensional approach allows a smaller actuator to achieve the equivalent of a much larger single-plane shear force.