Patent ID: 6719042
Filing Date: 2004-04-13
Classification: E21B

Abstract:
A shear ram assembly for shearing a tubular in a well and sealing fluid pressure within the well, the shear ram assembly comprising:a shear ram housing having a throughbore defining a centerline for the shear ram assembly and for receiving the tubular; a first ram axially moveable with respect to the housing along a first axis for moving an upper blade; an opposing second ram axially moveable with respect to the housing along a second axis for moving a lower blade, the upper blade and lower blade each slidably movable toward a centerline of the shear ram assembly in response to activation of the first ram and the second ram; at least one of the upper blade and the lower blade having a shearing edge for shearing the tubular, an upper planar surface of the lower blade passing below a lower planar surface of the upper blade as the blades move toward each other to shear the tubular; and a sealing system positioned substantially within a recess in the upper surface of the lower blade, the sealing system including an elastomeric seal for sealing engagement with the lower planar surface of the upper blade and a rigid actuator moveable relative to the lower blade to energize the elastomeric seal.