Difference between revisions of "Valko - McCain bubble point pressure correlation"
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− | == | + | == Valko - McCain bubble point pressure correlation == |
− | [[ | + | [[Valko - McCain bubble point pressure correlation|Valko - McCain]] is an empirical correlation for the '''bubble point''' pressure published in '''2003''' <ref name={Valko - McCain}/>. |
− | == | + | [[File:Valko McCain Bubble Point Pressure.png|thumb|right|400px|link=https://www.pengtools.com/pvtCalculator?paramsToken=de71e4cc29541ab2117e07408864410c|Valko McCain Bubble Point Pressure correlation in the PVT Software]] |
− | :<math> P_{bp} = e^{2.498 + 0.713 | + | == Math & Physics == |
+ | |||
+ | :<math> P_{bp} = e^{2.498 + 0.713 z + 0.0075 z^2}</math><ref name= PracticalPVT/> | ||
where: | where: | ||
+ | |||
+ | :<math> z = z1 + z2 + z3 + z4</math> | ||
+ | |||
+ | :<math> z1 = A_0+ A_1 ln(R_{sb}) + A_2 ln^2(R_{sb}) + A_3 ln^3(R_{sb})</math> | ||
A0 = -4.814074834<br/> | A0 = -4.814074834<br/> | ||
− | A1 = 0.7480913 | + | A1 = 0.7480913<br/> |
A2 = 0.1743556<br/> | A2 = 0.1743556<br/> | ||
− | A3 = 0.0206<br/> | + | A3 = -0.0206<br/> |
− | :<math> | + | |
+ | :<math> z2 = B_0 + B_1 API_{oil} + B_2 {API_{oil}}^2 + B_3 {API_{oil}}^3</math> | ||
B0 = 1.27<br/> | B0 = 1.27<br/> | ||
− | B1 = 0.0449<br/> | + | B1 = -0.0449<br/> |
B2 = 4.36e-4<br/> | B2 = 4.36e-4<br/> | ||
− | B3 = 4.76e-6<br/> | + | B3 = -4.76e-6<br/> |
− | :<math> | + | |
+ | :<math> z3 = C_0 + C_1 SG_{g} + C_2 SG^2_{g} + C_3 SG^3_{g}</math> | ||
C0 = 4.51<br/> | C0 = 4.51<br/> | ||
− | C1 = 10.84<br/> | + | C1 = -10.84<br/> |
C2 = 8.39<br/> | C2 = 8.39<br/> | ||
− | C3 = 2.34<br/> | + | C3 = -2.34<br/> |
− | :<math> | + | |
+ | :<math> z4 = D_0 + D_1 T + D_2 T^2 + D_4 T^3</math> | ||
D0 = -7.2254661<br/> | D0 = -7.2254661<br/> | ||
D1 = 0.043155<br/> | D1 = 0.043155<br/> | ||
− | D2 = 8.55e-5<br/> | + | D2 = -8.55e-5<br/> |
D3 = 6.00696e-8<br/> | D3 = 6.00696e-8<br/> | ||
− | |||
− | :<math> \ | + | == Application range == |
+ | :<math> 1.8 \le R_s \le 394.7 </math> | ||
+ | :<math> 0.725 \le SG_o \le 1.029 </math> | ||
+ | :<math> 0.555 \le SG_g \le 1.685 </math> | ||
+ | :<math> 15.6 \le T, C \le 172.2 </math> | ||
+ | |||
+ | == Example. Calculation of the bubble point pressure == | ||
+ | Example source <ref name=DW/> | ||
+ | ===Input data=== | ||
+ | :<math>R_s</math> = 60 sm3/sm3 | ||
+ | :<math>SG_o</math> = 0.85 or 35 API | ||
+ | :<math>SG_g</math> = 0.75 | ||
+ | :<math>T</math> = 90C or 363K | ||
+ | Calculate bubble point pressure? | ||
+ | ===Solution=== | ||
+ | z1=-0.2422<br/> | ||
+ | z2=0.0294<br/> | ||
+ | z3=0.1122<br/> | ||
+ | z4=-0.0594<br/> | ||
+ | :<math>ln(P_b)</math> = 2.4557 | ||
+ | :<math>Pb</math> = 11.65MPa or 115 atm | ||
− | = | + | The solution is available in the online PVT calculator software at [https://www.pengtools.com/pvtCalculator?paramsToken=de71e4cc29541ab2117e07408864410c www.pengtools.com] |
− | + | ||
− | + | == Nomenclature == | |
− | :<math> | + | :<math> API_{oil} </math> = oil specific gravity, °API |
− | :<math> | + | :<math> A_0..A_3 </math> = coefficients |
− | :<math> | + | :<math> B_0..B_3 </math> = coefficients |
− | :<math> | + | :<math> C_0..C_3 </math> = coefficients |
− | :<math> | + | :<math> D_0..D_4 </math> = coefficients |
− | :<math> P_{bp} </math> = bubble point pressure, | + | :<math> P_{bp} </math> = bubble point pressure, MPa |
− | :<math> R_s </math> = oil gas | + | :<math> R_s </math> = solution oil gas ratio, sm3/sm3 |
:<math> SG_g </math> = gas specific gravity, dimensionless | :<math> SG_g </math> = gas specific gravity, dimensionless | ||
− | :<math> | + | :<math> SG_o </math> = oil specific gravity, dimensionless |
− | :<math> | + | :<math> T </math> = temperature, °K |
− | + | == References == | |
<references> | <references> | ||
− | <ref name={ | + | <ref name={Valko - McCain}> |
{{cite journal | {{cite journal | ||
|last1= Valkó |first1=P. P. | |last1= Valkó |first1=P. P. | ||
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|url=http://dx.doi.org/10.1016/S0920-4105(02)00319-4 | |url=http://dx.doi.org/10.1016/S0920-4105(02)00319-4 | ||
|url-access=registration | |url-access=registration | ||
+ | }}</ref> | ||
+ | |||
+ | <ref name=PracticalPVT> | ||
+ | {{cite journal | ||
+ | |last1= Afanasyev |first1=Vitaliy | ||
+ | |last2= Moskvin |first2=Igor | ||
+ | |last3= Wolcott |first3=Ken | ||
+ | |last4= McCain |first4=W.D. | ||
+ | |title=Practical PVT Calculations for black oils | ||
+ | |journal=YUKOS publication | ||
+ | |date=2004 | ||
+ | }}</ref> | ||
+ | <ref name=DW> | ||
+ | {{cite book | ||
+ | |last1= Wolcott |first1=Don | ||
+ | |title=Applied Waterflood Field Development | ||
+ | |date=2009 | ||
+ | |publisher=Energy Tribune Publishing Inc | ||
+ | |place=Houston | ||
+ | |url=https://www.amazon.com/Applied-Waterflood-Field-Development-Wolcott/dp/0578023946/ref=sr_1_1?ie=UTF8&qid=1481788841&sr=8-1&keywords=Don+wolcott | ||
+ | |url-access=subscription | ||
}}</ref> | }}</ref> | ||
</references> | </references> | ||
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{{#seo: | {{#seo: | ||
− | |title= | + | |title=Valko - McCain bubble point pressure correlation |
|titlemode= replace | |titlemode= replace | ||
− | |keywords= | + | |keywords=Valko - McCain correlation, oil bubble point |
− | |description= | + | |description=Valko - McCain correlation is an empirical correlation for the oil bubble point pressure published in 2003. |
}} | }} |
Latest revision as of 08:50, 28 September 2020
Contents
Valko - McCain bubble point pressure correlation
Valko - McCain is an empirical correlation for the bubble point pressure published in 2003 [1].
Math & Physics
where:
A0 = -4.814074834
A1 = 0.7480913
A2 = 0.1743556
A3 = -0.0206
B0 = 1.27
B1 = -0.0449
B2 = 4.36e-4
B3 = -4.76e-6
C0 = 4.51
C1 = -10.84
C2 = 8.39
C3 = -2.34
D0 = -7.2254661
D1 = 0.043155
D2 = -8.55e-5
D3 = 6.00696e-8
Application range
Example. Calculation of the bubble point pressure
Example source [3]
Input data
- = 60 sm3/sm3
- = 0.85 or 35 API
- = 0.75
- = 90C or 363K
Calculate bubble point pressure?
Solution
z1=-0.2422
z2=0.0294
z3=0.1122
z4=-0.0594
- = 2.4557
- = 11.65MPa or 115 atm
The solution is available in the online PVT calculator software at www.pengtools.com
Nomenclature
- = oil specific gravity, °API
- = coefficients
- = coefficients
- = coefficients
- = coefficients
- = bubble point pressure, MPa
- = solution oil gas ratio, sm3/sm3
- = gas specific gravity, dimensionless
- = oil specific gravity, dimensionless
- = temperature, °K
References
- ↑ Valkó, P. P.; McCain, W.D. (2003). "Reservoir oil bubblepoint pressures revisited; solution gas–oil ratios and surface gas specific gravities.". J. Pet. Sci. Eng. 37 (3–4): 153-169.
- ↑ Afanasyev, Vitaliy; Moskvin, Igor; Wolcott, Ken; McCain, W.D. (2004). "Practical PVT Calculations for black oils". YUKOS publication.
- ↑ Wolcott, Don (2009). Applied Waterflood Field Development. Houston: Energy Tribune Publishing Inc.