Abstract

Functionally, subsea jumpers in a short pipe connector are used to transport production fluids between two subsea components such as a tree and manifold, manifold and manifold or manifold and export sled. In the design of a rigid jumper system, all parts of the system should be analyzed with respect to reliability, safety, costs and expected failure rates and to minimize failures and maintenance for the life of the design. Rigid jumpers are standard shaped pipes that can withstand high static and dynamic loads generated by internal pressure, temperature and external fluid effects. This paper describes a fluid structure interaction modeling technique that incorporates all of the significant behavioral effects that influence the thermal and geometric characteristics of jumpers for operating, hydraulic and service fluids. The use of nonlinear finite element code allowed the creation of a jumper model of a coupled fluid structure interaction problem. The results and recommendations presented in this paper will provide assistance to the industry in the design and analysis of subsea jumpers.

Highlights

  • Subsea fields have been developed using a variety of tie-in systems over the past decades

  • In the design of a rigid jumper system, all parts of the system should be analyzed with respect to reliability, safety, costs and expected failure rates and to minimize failures and maintenance for the life of the design

  • This paper presented the results of an investigation of the collapse strength of subsea jumper pipe of varying shapes by considering temperature, ovality and internal fluid velocity

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Summary

Introduction

Subsea fields have been developed using a variety of tie-in systems over the past decades. The jumper connector capacity envelope can be the driving factor for increasing flexibility To achieve these requirements, the typical span length of a rigid jumper is from 20 to 50 m. The typical span length of a rigid jumper is from 20 to 50 m It is usually fabricated into an M-shape (Figure 1b), L-shape or inverted U-shape by adding vertical legs and using steel bends, tees and elbows. This is basically a fluid structure interaction (FSI) problem, in which internal or external flow interacts with the structure to create stresses and pressures that deform the pipe and alter the flow of the fluid [2]. This paper presents the results of an investigation of the collapse strength of pipes of varying shapes, in which ovality, temperature and internal velocity are considered

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