A Design Approach for a Reinforced Thermoplastic Pipe & Coupling System

Published: January 2002 | Fifth International Conference: Pipeline Rehabilitation & Maintenance | January 19 – 23, 2002 | Gulf International Convention Centre, Bahrain

Abstract

Halliflow[1], a reinforced thermoplastic pipe, has been developed for the transmission of oil and gas production fluids. Field applications are initially targeted at the onshore hydrocarbon market. However, this product is also suitable for shallow water developments and other diversified markets, which include gas transmission, water transportation, chemical process pipework and mining applications. RTP has the potential to reduce operating costs and provide an attractive life of field commercial alternative to carbon steel lines. The RTP development effort has benefited significantly from experience in the technology of unbonded flexible pipe. RTP utilises the inherent benefits of flexible pipe technology to provide a lower cost product derivative.
This paper details the RTP design methodology for polyethylene/aramid fibre based thermoplastic pipes and end fittings. For onshore applications the service life design criteria are specifically concerned with chemical resistance to internal fluids, resistance to internal pressure, tensile and bending loads, resistance to ultra violet degradation and gas permeation.

 

Authors:

Dodds, Dr. N., Southern, A., Tuohy, J., Sheldrake, Dr. T.