Difference between revisions of "Erosional velocity"
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| + | ==Erosional velocity== | ||
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The flow of a gas-liquid multiphase system may cause erosion if velocities are high. This is the description of empirical relationships for estimating whether erosion will occur in a system at a certain velocity used at [[:Category:PQplot|PQplot]]. | The flow of a gas-liquid multiphase system may cause erosion if velocities are high. This is the description of empirical relationships for estimating whether erosion will occur in a system at a certain velocity used at [[:Category:PQplot|PQplot]]. | ||
As a rule of thump, pipe erosion begins when velocity exceeds the value of C/SQRT(ρ) in ft/s, where ρ = gas density (in lb/ft3) and C = empirical constant (in lb/s/ft2) (starting erosional velocity). We used C=100 as API RP 14E (1984) suggested C=100 for continuous and 125 for non continuous service. | As a rule of thump, pipe erosion begins when velocity exceeds the value of C/SQRT(ρ) in ft/s, where ρ = gas density (in lb/ft3) and C = empirical constant (in lb/s/ft2) (starting erosional velocity). We used C=100 as API RP 14E (1984) suggested C=100 for continuous and 125 for non continuous service. | ||
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| + | ==Erosion== | ||
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| + | Erosion is normally expressed as a rate of metal loss, usually mm/year. It usually occurs in turns or protrusions; or with solids content. | ||
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| + | One can relate [[Erosional velocity]] to a metal loss rate. | ||
== 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. | ||
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| + | * RECOMMENDED PRACTICE RP O501 EROSIVE WEAR IN PIPING SYSTEMS. REVISION 4.2 - 2007. DET NORSKE VERITAS | ||
[[Category:PQplot]] | [[Category:PQplot]] | ||
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| + | {{#seo: | ||
| + | |title=Erosional velocity | ||
| + | |titlemode= replace | ||
| + | |keywords=Erosional velocity, pipeline sizing, gas pipeline sizing, flow rate, petroleum engineering | ||
| + | |description=Erosional velocity | ||
| + | }} | ||
Revision as of 05:37, 8 November 2018
Erosional velocity
The flow of a gas-liquid multiphase system may cause erosion if velocities are high. This is the description of empirical relationships for estimating whether erosion will occur in a system at a certain velocity used at PQplot.
As a rule of thump, pipe erosion begins when velocity exceeds the value of C/SQRT(ρ) in ft/s, where ρ = gas density (in lb/ft3) and C = empirical constant (in lb/s/ft2) (starting erosional velocity). We used C=100 as API RP 14E (1984) suggested C=100 for continuous and 125 for non continuous service.
Erosion
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.
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.
- RECOMMENDED PRACTICE RP O501 EROSIVE WEAR IN PIPING SYSTEMS. REVISION 4.2 - 2007. DET NORSKE VERITAS
