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

  • 01 April 2015

    Weatherford launches new composite frac plug to reduce mill-out time

    Weatherford launched its TruFrac composite frac plug at the 2015 SPE/ICoTA Coiled Tubing and Well Intervention Conference in The Woodlands, Texas, on 24 March...

  • 01 April 2015

    Coiled tubing-conveyed monitoring system aims to maximize production, intervention success

    A new coiled-tubing service is providing a method for continuous, real-time monitoring of horizontal or highly deviated wells by installing fiber optics inside various sizes...

  • 31 March 2015

    ExxonMobil begins production at Hadrian South in Gulf of Mexico

    ExxonMobil has begun production in the deepwater Gulf of Mexico (GOM) at Hadrian South, with facilities tied back to the nearby Lucius project. Daily gross production...

  • 31 March 2015

    Active risk assessment, global sharing at core of Nabors safety intervention program

    Gagan Singhal, Area Manager at Nabors Drilling International, outlined a new safety intervention system that helps the company...

  • 30 March 2015

    National Petroleum Council: US can safely tap Arctic resources to secure energy needs

    Prudently developing US Arctic oil and natural gas resources would enhance America’s position as a global leader in energy production for the next 35 years...

  • Read more news