Difference between revisions of "Erosional velocity"
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| − | + | <div style='text-align: right;'>By Mikhail Tuzovskiy on {{REVISIONTIMESTAMP}}</div> | |
| − | + | ==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 | ||
| + | :<math>v=\frac{C}{\sqrt{\rho}}</math> | ||
| + | |||
| + | where: | ||
| + | :<math> v </math> = gas velocity, ft/s | ||
| + | :<math> C </math> = empirical constant (starting erosional velocity), lb/s/ft2 | ||
| + | :<math> \rho </math> = 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 == | == 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. | * 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. | ||
| + | |||
| + | * [[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:pengtools]] | ||
| + | |||
| + | {{#seo: | ||
| + | |title=Erosional velocity and Erosion | ||
| + | |titlemode= replace | ||
| + | |keywords=Erosion, Erosional velocity, pipeline sizing, gas pipeline sizing, flow rate, petroleum engineering | ||
| + | |description=Erosion is normally expressed as a rate of metal loss, usually mm/year. It usually occurs then flow velocity exceeds erosional velocity. | ||
| + | }} | ||
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
where:
= gas velocity, ft/s
= empirical constant (starting erosional velocity), lb/s/ft2
= 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.
