ISR Interlocking Shear Rams Product Sheet
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ISR Interlocking shear rams APPLICATIONS Drilling and production BENEFITS ■■ ■■ Improved operational integrity with blades integral to ram body Enhanced reliability with greater shearing ability FEATURES ■■ ■■ Blades integral to ram body ●● Dual cutting structures with V-shaped cutting edges on both rams Compatibility with ●● U* surface ram-type BOP ●● TL* offshore ram-type BOP for shearing wireline ISR interlocking shear rams. Cameron ISR* interlocking shear rams feature the same shearing action as DS* dual-string shear rams and offer extended seal life. ISR rams have nearly identical blades located approximately halfway up the rams at the widest point. The ISR rams interlock in the last inch of travel to keep the blade seals in the upper ram in contact with the lower sealing surface, helping to maintain seals’ operational integrity. Shearing action Upon completion of shearing, the lower fish is housed in a vertical pocket while the blade face seal provides a seal between the horizontal faces of the upper and lower blades. Wireline shearing capability Wireline is an integral part of drilling, and the ability to shear wireline improves the safety of drilling operations. Cameron engineered a set of ISR interlocking shear rams with improved interlocking capabilities, enabling the ability to shear wireline. These rams were designed to fit in the existing body of 18-in 5,000- and 10,000-psi TL BOPs. Specifications Weight, lbm [kg] Dimensions, in [cm] Closing volume and force * Mark of Schlumberger Other company, product, and service names are the properties of their respective owners. Copyright © 2017 Schlumberger. All rights reserved. 17-DRL-272320 Lower Ram Upper Ram 417 [189] 462 [210] 22 × 16½ × 7¾ [56 × 42 × 20] 22 × 16½ × 7¾ [56 × 42 × 20] Dependent on the bonnet assembly chosen.................. cameron.slb.com/drilling
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