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Sean South PP

Operational

Operator:

One-Dyas

Country:

UK

Block:

49/25

49/25
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Type:

Gas

Facility:

Production

Water Depth:

31

Installed:

1986

meters

Block:

49/25

Design:

Fixed steel

Sub Structure:

1442

Topsides Wgt:

6441

tonnes

tonnes

Intro

A fixed steel-jacket production and accommodation platform in the Sean gas field (Block 49/25a), installed May & November 1985 and first producing in 1986. It functions as the central processing hub and living quarters for bridge-linked PD. (turn0search23)

Field

Serves the South Sean reservoir segment of the larger Sean gas field. Gas production is routed through PP for conditioning (separation, dehydration) before export via the PL311 pipeline system to the UK’s Bacton Gas Terminal. (turn0search23)

Facilities

PP hosts primary separation vessels, dehydration units (glycol contactors), metering runs and export interfaces. Gas arriving from PD compression and RD via in-field pipeline PL310 (20- × ~4.7-km) enters PP for bulk removal of liquids, then moves into export headers conveying gas to the shore. PP also provides accommodation and utilities (power generation, HVAC, safety systems, control DCS/SCADA) for operations personnel. The structure comprises an eight-leg steel jacket in ~30-m water depth, topside drilling support, well testing areas, and manifold headers for PD and RD connections. Utility systems include chemical injection, produced water handling, fire and gas detection, and emergency shutdown facilities. Export compression duties are shared with PD, but PP focuses on dehydration and conditioning to meet pipeline specification. Processed gas reaches the PL311 export line to Bacton, linking with UK national grid inputs. (turn0search23)

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49/25
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