Shear All Ram features curved asymmetrical blades

Posted on 10 May 2011

The Shear All Ram has been shown to operate successfully when multiple shearing and sealing sequences are required, according to T3 Energy Services. The product was unveiled during OTC in Houston last week.

The Shear All Ram has been shown to operate successfully when multiple shearing and sealing sequences are required, according to T3 Energy Services. The product was unveiled during OTC in Houston last week.

The Shear All Ram (SAR) was introduced last week at OTC, a BOP ram design whose field tests show it has the ability to shear “any size pipe and casing with 30% to 50% less shearing force (than conventional rams)” and “to manipulate the pipe or the casing, centering the pipe or casing for a clear decisive shear,” Saeid Rahimian, president of the fluid management group for Robbins Myers, said at the product launch during the Offshore Technology Conference in Houston last week.

SAR is expected to be offered by Robbins Myers’ T3 Energy Services unit in Q3 this year.

“This is probably the only shearing device that wholly sweeps the bore of the blowout preventer to assure that it gathers up the pipe, moves the pipe to a shearable position, and then of course continues on and shears the pipe,” T3 VP engineering Gary Schaeper said, adding that SAR development is an ongoing process. “We’ve yet to find the limit. We haven’t broken the rams yet. … We have a lot more development work to do to find the limit to this product.”

According to Doug Jahnke, engineering manager for T3’s pressure control group, the asymmetry of the design is the product’s most unique feature, allowing for more blade features in a smaller envelope. “Incorporating a near-vertical rake promotes tensile failure at the creasing points. The blade arcs extend forward to provide containment, supported transversely against the side of the ram bore, so there’s no fear of breaking the sides off,” Mr Jahnke said. Due to the ram’s architecture, it also allows the sheared pipe to be lifted out of the BOP so it doesn’t interfere with the further closure of the rams, he said.

Leave a Reply

*

FEATURED MICROSITES


Recent Drilling News

  • 31 October 2014

    Japan Drilling to operate new jackup under construction at Keppel

    The KFELS Super B Class design has a drilling depth of 35,000 ft. The rig's leg structure is designed to provide enhanced robustness for operations at 400 ft water depth...

  • 29 October 2014

    New intelligent water management solution based on oxidizer technology

    Nalco Champion has launched the RenewIQ line of oilfield water reuse solutions to help operators reduce freshwater consumption and associated handling costs...

  • 29 October 2014

    Baker Hughes launches all-electric intelligent well system

    Baker Hughes has commercially released its MultiNode all-electric intelligent well system. It allows operators to remotely monitor and control a greater number of production zones...

  • 29 October 2014

    Tercel collaborates with TOTAL to design MicroCORE PDC drill bit

    Tercel Oilfield Products has launched the MicroCORE cutting system at the 2014 SPE Annual Technical Conference and Exhibition in Amsterdam. The MicroCORE cutting...

  • 28 October 2014

    First extension well in pre-salt Libra leads to oil discovery

    The Libra consortium announced that the drilling of the first extension well in the Libra area, known as 3-BRSA-1255-RJS (3-RJS-731), has proven the discovery of high-quality oil...

  • Read more news