Abstract
The present work presents an experimental characterization of the erosion-corrosion phenomena caused by confined slurry seawater flow. A set of experiments were conducted under a carefully controlled environment to estimate the erosion-corrosion severity in a 90° pipe bend. Sand particle concentration ranged from 0 to 9 g/l. Accurate spectrometric measurements of eroded iron concentration in the drain flow were carried out in order to characterize the erosion-corrosion severity in the bend. Both the flow Reynolds number and sand particle concentration were directly correlated to the onset of erosion phenomena. Consequently, this study proposes empirical correlations to predict the erosion-corrosion rate as a function of sand concentration and Reynolds number with two sets of coefficients for both laminar and turbulent flow regimes.
Highlights
Seawater systems are used by many industries, such as onshore/offshore oil and gas production, power plants and coastal industrial plants (Antaki 2003; Yang and Cheng 2012)
For the turbulent flow regime, a significant increase in the weight loss is observed as the flow velocity is increased
On the other hand, when the sand concentration was kept constant at 6 g/l and the Reynolds number was doubled from 1 × 104 to 2 × 104 in the turbulent flow regime, the erosion-corrosion rate was doubled
Summary
Background and motivation Seawater systems (i.e. pipelines, elbows) are used by many industries, such as onshore/offshore oil and gas production, power plants and coastal industrial plants (Antaki 2003; Yang and Cheng 2012). The elbows are connected to a plastic pipeline system filled with seawater contaminated with sand at three different concentrations running at various flow velocities covering the laminar and turbulent flow regimes.
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