With the successful installation, commissioning, and operation of the first All Electric System in the Dutch Sector of the North Sea, the All-Electric Subsea Controls Systems technology continues to prove its advantages. As the 2-off subsea trees are currently gaining field experience, proving their defined targets such as e.g. improved reliability & availability and real time feedback, spin-off technology already has been developed.

Considering a customer survey and subsequent market analysis the need for an electric high precision choke being controlled from a standard electro-hydraulic multiplexed Subsea Control Module (SCM) clearly has been identified. A mature development initiative planting the design on the successfully field proven CameronDC™ Choke was initiated.

The DC electric Standalone Choke can be controlled from an electro-hydraulic multiplexed SCM utilizing minimum power consumption along with a standardized CANopen interface enabling high precision choke control, continuous position feedback, and improved operatability. In combination with dedicated Choke Control Software flow from multiple wells for enhanced recovery can be optimized.

Along with the description of the experience gained during the development this paper will discuss the inherent advantages of the DC electric Standalone Choke applied to subsea production systems.

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