The standard EVDT has a 5 1/8 inch tree bore at 10,000 psi working pressure, fully rated to 10,000 ft (3,050 m) water depths and a -50 to 250 degree Fahrenheit (-45 to 121 deg C ) temperature range.
The tubing hanger system and installation tooling are available up to a 7 inch bore for 10,000 psi applications and a 5 inch bore for 15,000 psi applications. The EVDT system may also be provided
up to 350 degrees Fahrenheit (176 deg C). The EVDT allows for up to eleven (11) downhole functions – typically allocated as nine (9) hydraulic, and two (2) electrical or fiber optic lines.
The EVDT system features FMC’s proven Flow Module downstream of the wing valve. The flow module provides maximum flexibility and allows the tree to become standard regardless of application. The flow module can be configured to project specific variances such as production vs. water injection service, potentially eliminating the need for spare tree systems.
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Ability to install the tubing hanger directly in the subsea wellhead or in a tubing head spool.
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The flexible BOP-on-Tree interface allows the EVDT to run in a similar way as a traditional vertical tree or as a horizontal tree system. This means that an open water riser system is no longer required for a vertical tree system.
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The EVDT features a flow module providing maximum flexibility and allows the tree to become standard regardless of application. The flow module interface can also be configured for future advances in subsea boosting and gas compression technologies without having pull the tree system.
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The EVDT system is also the first completion system designed to be fully compatible with either Subsea BOP or Surface BOP operations. Its slimbore design and tooling suite are designed to operate within a high pressure riser from either a Surface BOP MODU or Jack-Up rig.
These features have not only allowed FMC to meet the industry requirements today, but accommodate the EVDT with technologies that will arise in the years to come.
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