Norway/Sweden: Multiphase flowmeter maximizes output, assists reservoir management ///
BHP Billiton’s Keith oil field was discovered in the 1980s, but its development was pushed into the late 1990s by a combination of mixed appraisal results and lack of area infrastructure. Output finally began in November 2000 from this small, marginal, geologically complex, North Sea field. Subsea production started after recompletion of the best appraisal well in what became the first subsea-to-subsea facility tieback in the North Sea.
Keith field’s waxy, but gassy black oil is produced to Bruce field’s (BP) Western Area Development subsea manifold via an insulated pipeline bundle. Keith’s single completion (K01) is operated from Bruce facilities via typical, subsea hydraulic systems. The K01 oil producer was completed with a 10,000-psi, artificial lift, subsea tree. Additionally, the completion was fitted with two permanent downhole pressure gauges, scale inhibitor injection and three gas lift mandrels. A Framo multiphase flowmeter (MPFM) was attached to the well’s subsea structure and downstream of the production flowline choke.
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