Type:
Oil
Facility:
Production
Water Depth:
339
Installed:
1999
meters
Block:
31/2
Design:
Floating steel
Sub Structure:
13080
Topsides Wgt:
19750
tonnes
tonnes
Intro
Troll-C is a steel semi-submersible production and accommodation platform on the Troll field in the northern North Sea. Production began in 1999 as part of Troll Phase-II. It processes oil from subsea templates and associated gas, and is tied physically and operationally to Troll-B and shared infrastructure, with electrification from shore via Troll-Oseberg power link.
Field
The Troll field is one of the North Sea’s largest gas and oil accumulations, discovered in 1979 and producing since 1995. Troll West includes oil reservoirs developed by Troll-B and C, with subsea templates feeding into these platforms. The field resides in deep water (~300-m) west of Bergen.
Facilities
Troll-C receives wellstreams from subsea oil production templates on Troll West and from the adjacent Fram field. Its topsides include facilities for three-phase separation, gas compression, dehydration, water handling and export metering. Oil export pipelines link to the Troll Oil Pipeline system to Mongstad; gas export is routed via Troll-A infrastructure and onward to Kollsnes. The platform has integrated accommodation, utilities for power (now partly supplied from shore), water injection support, and control systems linked into the Troll area network. Its semi-submersible hull suits deepwater operations, and shared power infrastructure with Troll-B supports reduced emissions and efficient field operations.
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