Server maintenance is scheduled for Saturday, December 21st between 6am-10am CST.

During that time, parts of our website will be affected until maintenance is completed. Thank you for your patience.

Menu
Search
Filters
Close
Menu

Use GIVING24 at checkout to save 20% on eCourses and books (some exclusions apply)!

11246 Damage Mechanisms in Double-Screw Pumps for Heavy Crude Oil

Picture for 11246 Damage Mechanisms in Double-Screw Pumps for Heavy Crude Oil
Available for download
Product Number: 51300-11246-SG
ISBN: 2011 11246 CP
Author: Ioana Cristina Grigorescu, Gladys Navas and Medardo A. Camacaro
Publication Date: 2011
$0.00
$20.00
$20.00
This paper summarizes the surface damage mechanisms that were observed in three double-screw pumps used for the transfer of high viscosity crude oil and their relations with pump operation conditions, flow characteristics and material defects.

Erosion-corrosion governs the degradation of the screws; however the balance between chemical and mechanical damage varied according to local flow pattern and content of formation water, gas and solids. Along the screws, the thickness of the fluid film between threads and the inner surface of the pump case varies when excessive screw deflection occurs. Flow instability, mainly local gas compression - decompression, enhances the erosive attack with solid particles and intensify the fatigue inducing conditions. Contact areas between spindle and bearing or gears are corroded by the pumped fluid leaked through the mechanical seals, which viscosity is reduced due to the contained gas; clearances that developed in these corroded areas enhance fatigue.

Key words: screw-pump, corrosion – erosion, multiphase – flow, NiCrBSi coating
This paper summarizes the surface damage mechanisms that were observed in three double-screw pumps used for the transfer of high viscosity crude oil and their relations with pump operation conditions, flow characteristics and material defects.

Erosion-corrosion governs the degradation of the screws; however the balance between chemical and mechanical damage varied according to local flow pattern and content of formation water, gas and solids. Along the screws, the thickness of the fluid film between threads and the inner surface of the pump case varies when excessive screw deflection occurs. Flow instability, mainly local gas compression - decompression, enhances the erosive attack with solid particles and intensify the fatigue inducing conditions. Contact areas between spindle and bearing or gears are corroded by the pumped fluid leaked through the mechanical seals, which viscosity is reduced due to the contained gas; clearances that developed in these corroded areas enhance fatigue.

Key words: screw-pump, corrosion – erosion, multiphase – flow, NiCrBSi coating
Product tags
Also Purchased
Picture for DAMAGE MECHANISMS IN MULTISTAGE PUMPS FOR WATER INJECTION
Available for download

51312-01676-DAMAGE MECHANISMS IN MULTISTAGE PUMPS FOR WATER INJECTION

Product Number: 51312-01676-SG
ISBN: 01676 2012 CP
Author: Ioana Cristina Grigorescu
Publication Date: 2012
$20.00
Picture for 10381 Corrosion and Erosion Corrosion Wear Resistance of Rotating Components Made from USN S43100
Available for download

10381 Corrosion and Erosion Corrosion Wear Resistance of Rotating Components Made from USN S43100 (1.4057) Steel Under Controlled Potentials

Product Number: 51300-10381-SG
ISBN: 10381 2010 CP
Author: Oliver Klein, Hans Hoffmeister and Alexander Glafey
Publication Date: 2010
$20.00
Picture for 11249 Electrochemical and Microstructural Response of Metal Matrix Composites
Available for download

11249 Electrochemical and Microstructural Response of Metal Matrix Composites at Different Erosion-Corrosion Conditions

Product Number: 51300-11249-SG
ISBN: 2011 11249 CP
Author: Juan. F. Flores, A. Neville, N. Kapur, A. Gnanavelu
Publication Date: 2011
$20.00
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