Page 218 - Handbook Of Multiphase Flow Assurance

CHAPTER
9

Flow assurance integrity issues

OUTLINE

Corrosion 217 Integrated models 219
Introduction 217 Erosion 220
Types of corrosion 218
Corrosion monitoring methods 218 References 220
Currently used corrosion control
techniques 219

Corrosion

Introduction
Besides mechanical impacts on pipe walls and process equipment by liquid slugs and
moving flow assurance plug projectiles, the production system also experiences chemical
degradation by corrosion.
Corrosion management is the domain of corrosion engineers. Corrosion system design
should be done in collaboration with flow assurance specialists.
Numerous flow parameters which are used to estimate the rate of corrosion can be derived
from flow assurance analysis, including:

multiphase flow regime,
liquid and gas flow velocities and densities,
liquid and gas pressure and temperature,
rate of liquid droplets entrainment by gas flow,
location and rate of water condensation from gas,
location and composition of water holdup,
shear stress exerted by gas or liquid flow on the pipe wall,
flow velocities at the chemical injection quill locations,
locations of solid deposits.

Handbook of Multiphase Flow Assurance 217 © 2019 Elsevier Inc. All rights reserved.
https://doi.org/10.1016/B978-0-12-813062-9.00009-9