Menu
Search
Filters
Close
Menu

Save 20% on select titles with code HIDDEN24 - Shop The Sale Now

51318-10996-Applicability of the Shields Number for Prediction of Particle Movements in Oil Transmission Pipelines

Picture for Applicability of the Shields Number for Prediction of Particle Movements in Oil Transmission Pipelines
Available for download

The current work explores the dimensionless Shields number, including the applicability domain, to predict particle movement in oil transmission pipelines. Multiple scenarios are considered to compare the model’s prediction to actual pipeline experience.

 

Product Number: 51318-10996-SG
Author: Alfonso Garcia / Trevor Place / Fabio Rodriguez Corredor
Publication Date: 2018
Industry: Pipelines, Tanks, and Underground Systems
$0.00
$20.00
$20.00

Corrosive conditions can develop where pipeline sediments accumulate in crude transmission pipelines. The accumulation of sediment at pipeline over bends occurs when inertial forces in the pipe flow cause a thickening in the boundary layer at the pipe floor, which decreases the shear stresses responsible of mobilizing solids. The Shields method has been proposed to predict the accumulation of solid particles taking into account the critical role that shear stress plays in transportation of solids.

The Shields method was originally developed as a river model, a simple dimensionless diagram that can be used to forecast solid particle bed formation in open channels and Newtonian fluid. The model predicts the required minimum viscous shear stress to initiate movement of a particle bed. The dimensionless Shields number provides a ratio of the hydrodynamic drag forces (viscous shear stress) to the net submerged forces of gravity and buoyancy acting on a particle in a loose sediment bed. This meaningful physical number provides useful information about the onset of bed particle movement in pipe flow. The current work explores this dimensionless number, including the applicability domain, to predict particle movement in oil transmission pipelines. Multiple scenarios are considered to compare the model’s prediction to actual pipeline experience.

Corrosive conditions can develop where pipeline sediments accumulate in crude transmission pipelines. The accumulation of sediment at pipeline over bends occurs when inertial forces in the pipe flow cause a thickening in the boundary layer at the pipe floor, which decreases the shear stresses responsible of mobilizing solids. The Shields method has been proposed to predict the accumulation of solid particles taking into account the critical role that shear stress plays in transportation of solids.

The Shields method was originally developed as a river model, a simple dimensionless diagram that can be used to forecast solid particle bed formation in open channels and Newtonian fluid. The model predicts the required minimum viscous shear stress to initiate movement of a particle bed. The dimensionless Shields number provides a ratio of the hydrodynamic drag forces (viscous shear stress) to the net submerged forces of gravity and buoyancy acting on a particle in a loose sediment bed. This meaningful physical number provides useful information about the onset of bed particle movement in pipe flow. The current work explores this dimensionless number, including the applicability domain, to predict particle movement in oil transmission pipelines. Multiple scenarios are considered to compare the model’s prediction to actual pipeline experience.

Product tags
Also Purchased
Picture for Analyzing Pig Returns from a Subsea Pipeline for MIC: Sampling and Testing Challenges
Available for download

51318-10982-Analyzing Pig Returns from a Subsea Pipeline for MIC: Sampling and Testing Challenges

Product Number: 51318-10982-SG
Author: John J. Kilbane II Ph.D.
Publication Date: 2018
$20.00

This manuscript provides case study data from subsea crude oil pipelines that addresses the questions of how to obtain the best quality samples from pig returns for microbiological testing, and what are the relative merits of different test methodologies.
Picture for INFLUENTIAL FACTORS RELATED TO LOCALIZED CORROSION OF MILD STEEL IN SLIGHTLY SOUR ENVIRONMENTS
Available for download

51318-10984-INFLUENTIAL FACTORS RELATED TO LOCALIZED CORROSION OF MILD STEEL IN SLIGHTLY SOUR ENVIRONMENTS

Product Number: 51318-10984-SG
Author: Wei Zhang / Bruce Brown / David Young / Srdjan Nesic / Marc Singer
Publication Date: 2018
$20.00

A comprehensive parametric study was performed using a small-scale laboratory setup with the aim of investigating the occurrence of localized corrosion of mild steel in marginally sour environments.
Picture for Pitting corrosion of steam generator tubing alloys in chloride solutions with thiosulfate additions
Available for download

51318-10979-Pitting corrosion of steam generator tubing alloys in chloride solutions with thiosulfate additions

Product Number: 51318-10979-SG
Author: Abraham A. Becerra Araneda / Mariano A. Kappes / Martín A. Rodríguez / Ricardo M. Carranza
Publication Date: 2018
$20.00

Alloys UNS N06600, N06690 and N08800 are used for steam generator tubes. Pitting corrosion was studied in 0.1 to 1 M chloride solutions with additions of thiosulfate ranging from 10-4 M to 10-2 M, at room temperature. The alloys were tested in solution annealed and thermally aged conditions.
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support