MWCC Releases Shell-designed Capping Stack
Thursday, June 06, 2013
Photo: Marine Well Containment Company

Marine Well Containment Company (MWCC) announced the availability of a 10,000 psi capping stack for use in the deepwater U.S. Gulf of Mexico. The completion of the new capping stack – which stands 25 feet tall including the necessary lifting gear and weighs approximately 50 tons – marks another step in MWCC’s commitment to advancing well containment capabilities in the deepwater U.S. Gulf of Mexico, MWCC said.

The capping stack, which can handle up to 10,000 pounds of pressure per square inch, is an addition to the company’s containment system first made available in February 2011. It is the smaller of two capping stacks available with MWCC’s system which, with support from MWCC, provides operators more options to customize a containment plan based on the specifics of the wells being drilled.  

“The 10k psi capping stack is a result of feedback we received from member companies who operate facilities with wells closer together that are not as easily accessed by our larger capping stack,” said Marty Massey, chief executive officer of Marine Well Containment Company.

In support of MWCC, Shell agreed to lead the design and construction efforts for the 10,000 psi capping stack. With a footprint of 9 feet by 9 feet, the new capping stack is easier to maneuver in areas where wellheads and riser systems are closely spaced, such as tension leg platform (TLP) applications where wells are beneath a floating production facility, MWCC said. The new dual ram capping stack can cap a well in depths up to 10,000 feet.

The 10,000 psi capping stack is an addition to the 15,000 psi capping stack – the centerpiece of MWCC’s interim containment system. In July 2012, the 15,000 psi capping stack was deployed offshore in the U.S. Gulf of Mexico to a simulated well site where MWCC validated its ability to respond to a deepwater well control incident. At the request of regulators, MWCC mobilized and lowered the capping stack 6,900 feettsubsea where all necessary functions were completed and pressure testing confirmed the ability to control a well.

  • Photo: Marine Well Containment Company

    Photo: Marine Well Containment Company

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