BroadShear Off-Center Tool Joint Shear Rams | Schlumberger Products


Off-center tool joint shear rams

BroadShear Rams Wireline Shear Test
Cameron 18 3/4-in TL offshore ram-type BOP with BroadShear ram bonnets.

Industry’s only technology that shears both tool joint hardbanding and off-center tubulars

BroadShear rams can successfully shear both tool joint hardbanding and off-center tubulars—drillstring components previously considered unshearable—in a single stroke.

Engineered with enhanced metallurgy for exceptional strength and control, BroadShear rams are the culmination of years of experience in shearing tubulars to provide an innovative approach to meeting upcoming regulatory requirements.

Unsurpassed shearing ability

The ability to shear the drillpipe inside the BOP has long been a regulatory requirement. In a dangerous kick situation, the subsea controls trigger a defined sequence of functions, including shearing the drillpipe. Operators must have confidence that the shear rams inside the BOP will shear the pipe and allow the rig to disconnect and move off site.

BroadShear rams reliably shear casing diameters up to 16 in as well as tool joints and hardbanding. The tool joints can even be sheared off-center. With these two advances, more drillstring components can be sheared than ever before.

Off-center tool-joint shear rams
Tool joint hardbandings that were sheared with the BroadShear ram
In a single stroke, BroadShear rams can successfully shear both tool joint hardbanding and off-center tubulars—components previously considered unshearable.

Proven reliability

In a series of rigorous tests, a single set of BroadShear rams successfully sheared various drillstring components seven times. These tests included through the pin/box, hardbanding, and off-center components. These tests are some of the toughest shear tests performed in the industry to date.

According to our engineering analysis, BroadShear rams reduce the time that unshearable drillstring components are across the BOP rams from approximately 10% to 2% for a hole depth of 25,000 ft and standard tripping procedures.

Advanced regulatory compliance

In 2016, the Bureau of Safety and Environmental Enforcement (BSEE) released its new Well Control Rule, which requires that a subsea BOP system must have the following mechanisms and capabilities:

  • mechanism coupled with each shear ram to position the entire pipe completely within the area of the shearing blade and ensure shearing will occur any time the shear rams are activated. This mechanism cannot be another ram BOP or annular preventer, although those can be used during a planned shear. The mechanism must be installed no later than May 1, 2023.
  • ability to mitigate compression of the pipe stub between the shearing rams when both shear rams are closed.

BroadShear rams are already capable of shearing in compliance with this rule, providing you with more progressive technology to help you better achieve complex subsea objectives.

22 in × 11.5 in × 25 in
1,152 lbm per set
Third-party qualification
  • DNV GL
  • American Bureau of Shipping (ABS)
Specific to BroadShear rams
  • New builds
  • Existing rig BOP stacks
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