Type:
Gas
Facility:
Production
Water Depth:
22
Installed:
2016
meters
Block:
44/11a
Design:
Fixed steel
Sub Structure:
3146
Topsides Wgt:
3911
tonnes
tonnes
Intro
Cygnus A PU is a fixed steel production and utilities platform forming part of the Cygnus gas field development in the UK southern North Sea, Block 44/12a. Installed and commissioned in 2016, it provides primary gas processing, utilities, and export facilities. The platform is bridge-linked to the Cygnus A QU platform.
Field
The Cygnus gas field lies in the Southern North Sea Basin and produces gas from Permian Leman Sandstone reservoirs. Discovered in 1988, it is one of the largest gas developments in the UK southern sector and was developed using multiple fixed platforms and subsea infrastructure.
Facilities
Cygnus A PU receives gas from subsea wells and from the Cygnus B Wellhead Platform. Facilities include inlet separation, gas dehydration, and gas compression to meet export specifications. Processed gas is exported via pipeline to the onshore gas terminal at Theddlethorpe. Produced water is treated prior to disposal. Utilities include gas-turbine power generation, electrical distribution, instrument air, chemical injection, firewater and deluge systems. The platform houses control systems managing processing and export operations across the Cygnus hub. Bridge links facilitate personnel movement and shared services with the QU platform. Safety systems include fire and gas detection, emergency shutdown valves, and relief systems. The fixed steel jacket and topsides are designed for long-term high-capacity dry gas processing operations.
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