Testing, analysis solve insulation problem on gulf flowline

Upon start-up in late 1997, the Troika flowline system, offshore Louisiana Gulf of Mexico, evinced poor thermal insulating properties when the arrival temperature of produced fluids at the host platform was about 50° F. lower than expected.An investigation in 1998 included analysis, field measurements, and land tests of an 80-ft section of the Troika flowline bundle evaluated the cause of the properties and led to a remediation plan.The field data and test program identified the cause of the poor thermal performance to be convection of the pressurized nitrogen in or around the flowline's insulating foam. The test program demonstrated that damage to the foam directly affected the r...

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