Difference between revisions of "Erosional velocity"

From wiki.pengtools.com
Jump to: navigation, search
 
(4 intermediate revisions by the same user not shown)
Line 1: Line 1:
 +
<div style='text-align: right;'>By Mikhail Tuzovskiy on {{REVISIONTIMESTAMP}}</div>
 +
 
==Erosional velocity==
 
==Erosional velocity==
  
Line 8: Line 10:
  
 
where:
 
where:
 +
:<math> v </math> = gas velocity, ft/s
 
:<math> C </math> = empirical constant (starting erosional velocity), lb/s/ft2
 
:<math> C </math> = empirical constant (starting erosional velocity), lb/s/ft2
 
:<math> \rho </math> = gas density, lb/ft3
 
:<math> \rho </math> = gas density, lb/ft3
Line 14: Line 17:
  
 
==Erosion==  
 
==Erosion==  
 +
Erosion is a loss of original material due to solid particle impact on the material surface.
  
 
Erosion is normally expressed as a rate of metal loss, usually mm/year. It usually occurs in turns or protrusions; or with solids content.
 
Erosion is normally expressed as a rate of metal loss, usually mm/year. It usually occurs in turns or protrusions; or with solids content.
Line 24: Line 28:
  
 
* [[Media:RP O501 EROSIVE WEAR IN PIPING SYSTEMS.pdf|RECOMMENDED PRACTICE RP O501 EROSIVE WEAR IN PIPING SYSTEMS. REVISION 4.2 - 2007. DET NORSKE VERITAS (pdf)]]  
 
* [[Media:RP O501 EROSIVE WEAR IN PIPING SYSTEMS.pdf|RECOMMENDED PRACTICE RP O501 EROSIVE WEAR IN PIPING SYSTEMS. REVISION 4.2 - 2007. DET NORSKE VERITAS (pdf)]]  
 +
 +
==See Also==
 +
*[[Petroleum Engineering]]
 +
*[[Hydraulic fracturing]]
 +
*[[Petroleum Engineering Quiz]]
  
 
[[Category:PQplot]]
 
[[Category:PQplot]]
 +
[[Category:pengtools]]
  
 
{{#seo:
 
{{#seo:

Latest revision as of 05:28, 3 January 2023

By Mikhail Tuzovskiy on 20230103052848

Erosional velocity

Erosional velocity is a velocity of the multiphase flow at which pipe erosion occurs.

Erosional velocity equation

Pipe erosion begins when velocity exceeds the value of

v=\frac{C}{\sqrt{\rho}}

where:

 v = gas velocity, ft/s
 C = empirical constant (starting erosional velocity), lb/s/ft2
 \rho = gas density, lb/ft3

API RP 14E (1984) suggested C=100 for continuous and 125 for non continuous service.

Erosion

Erosion is a loss of original material due to solid particle impact on the material surface.

Erosion is normally expressed as a rate of metal loss, usually mm/year. It usually occurs in turns or protrusions; or with solids content.

One can relate Erosional velocity to a metal loss rate (see RP O501).

References

  • Mokhatab S, Poe WA, Speight JG (2006) "Handbook of Natural Gas Transmission and Processing", Section 11.6 - Design Considerations on sales gas pipelines, subsection 11.6.1 - Line Sizing Criteria, Elsevier, 2006.

See Also