Statfjord Late Life Project Flow Measurement From Study To Start Up

摘要

The Statfjord late life project is intended to improve oil/gas recovery from this Statoil Hydro-operated North Sea field, with the intention of keeping it on-stream until 2018-20. Statfjord A, B and C have been subject to substantial challenging modifications in order to produce more gas. These modifications have been carried out while all three platforms were in full operation. Gas production from Statfjord A, B & C is exported via a new pipeline called Tampen Link to the FLAGS transport system, which runs from Britain's Brent field near Statfjord to St. Fergus in Scotland. In order to increase export capacity to the UK, a new metering system had to be installed on the Statfjord B. The final solution for a fiscal flow measurement skid containing two parallel runs based on Ultrasonic Meters (USM) plus a new analyser system has been subject to evaluation from the conceptual studies to the Detail Engineering. The main objective was to comply with the Gas Sales Agreement and Regulatory requirements. For Statfjord A & C the existing orifice plate skids are re-used with upgrade of the control systems and analysers systems. Existing gas analysis measurement equipment for the Statfjord A & C Platforms have been required to be upgraded from single to redundant systems. Close collaboration between Oil Company, Engineering contractor and Metering/Analyser skid supplier has contributed to successfully completing a challenging Project. This paper will review the different project phases focusing on: (1) USM skid, control system including diagnostics tools. (2) Analyser systems including GC, H2S & water Dew point.