Subsea Umbilical Termination Assembly (SUTA)

3.3.2. Subsea Umbilical Termination Assembly (SUTA)

The SUTA shown in Figure 3-3 is the subsea interface for the umbilical and may serve as the distribution center for the hydraulic and chemical services at the seabed. The SUTA is connected to the subsea trees via HFLs. SUTA is typically composed of the following:
• UTH;
• Flying leads to connect the UTH and HDM;

• HDM if available;
• Mudmat foundation assembly with stab and hinge-over mechanism;
• MQC plates to connect to HFLs.
The type of SUTA to be used is determined by field architecture consid- erations, and is further defined during detailed design. The SUTA is designed with the following flexibilities:
• Provision for possible links to additional umbilicals;
• Provision for spare header included in case of internal piping failure;
• Demonstration of design that allows flexible installation;
• Retrievability and reconfiguration options;
• Redirection of any umbilical line to any tree service via flying leads.
SUTAs are installable with or without drilling rig assistance. The mudmat includes attachment points for adjusting the subsea position, with application of external horizontal forces, when direct vertical access for installation is not possible. A SUTA’s dimensions allow for ground transportation from the fabri- cation facility to the final destination. The umbilical is permanently terminated in the UTH. The infield first end SUTA is a smaller unit, its purpose is to link the electrical of hydraulic/chemical lines. HFLs are used to connect hydraulic/chemical lines between SUTAs and subsea trees/manifolds. EFLs are used to connect electrical power/communication from the umbilical termination assembly (UTA) to the manifold and tree-mounted SCM. The UTH, HDM, and EDMs are each independently retrievable from the UTA’s mudmat. Each of the electrical quads (umbilical cables with four conductors) is terminated in electrical connectors at the UTH. The EFL interconnects between these UTH connectors and the EDM connectors, routing power and communication from the UTH to the EDM. Subsea electrical distribution is done from the EDM to the subsea trees and production manifolds. Two flying leads provide the hydraulic/chemical interconnections between the UTH and the HDM.