INSTALLING COATED PIPE-1 PIPE-IN-PIPE INSULATION SYSTEM PASSES TESTS FOR REEL LAY

Michael I. Mollison Esso Australia Ltd. Melbourne The first reeled installation of the thermally insulated pipeline system known as pipe-in-pipe (PIP) occurred in development of the Seahorse and Tarwhine fields in Bass Strait, Australia, in 1989. PIP consists of an inner steel pipe coated with high-density polyurethane (HDPU) foam inside an outer steel carrier pipe. The lines are 7 and 10.8 miles, respectively, connecting the Barracouta offshore platform and subsea wellheads at each field

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