Proven system design
Operator Anadarko conducted a detailed review of the products available.
The team selected the Schlumberger ultradeepwater TRC-II safety valves to
ensure maximum production and well integrity. The TRC-II valve was chosen
because of the highly successful track record of the TRC series of safety
valves. Not one TRC series valve of the 250 installed in the Gulf of Mexico has
mechanically failed after initial installation. And over the lives of all these
wells, only one valve experienced a problem, when metal particles caused a leak
in a ball check valve that had been pulled twice for nonsafety-valve related
workovers. The TRC-II low-operating-pressure system design allows full bore
access and maximum flow rates with the security of an at-the-ready proven
emergency well shut-in system.
Anadarko installed two API-monogrammed 10,000-psi working pressure
TRC-II safety valves at the record depth without installation or operational
anomalies. Anadarko plans to use these systems in other deepwater Gulf of