Difference between revisions of "Water viscosity"

Revision as of 06:15, 2 October 2020

The formation water (brine) isothermal viscosity correlation is published by McCain in 1991^[1].

Water viscosity ^[2]

\mu_{w1} = AT^{-B}

^[1]

\mu_{w} = \mu_{w1} (0.9994 + 4.0295 * 1e-5 * P + 3.1062 * 1e-9 * P^2

^[1]

The correlation is valid only for temperatures between 200 and 270F, pressures of 1000 to 20000 psia, and salinities up to 200000 mg/l^[1].

We, at pengtools.com, are calculating water compressibility below the bubble point with the same equation at the moment.

Example source ^[2]

C_{mg/l} = 74289.3

Calculate water isothermal compressibility at 3500 psia and 165°F?

c_w = 2.6348E-6\ psia^{-1}

C_{mg/l}

= pressure correction, res bbl/STB

C_{mg/l}

= water salinity or solids concentration, mg/l

P

= pressure, psia

T

= Temperature, °F

↑ ^1.0 ^1.1 ^1.2 ^1.3 McCain, W.D. Jr. (1991). "Reservoir-Fluid Property Correlations-State of the Art". Society of Petroleum Engineers (SPE-18571-PA).
↑ ^2.0 ^2.1 McCain, W.D. Jr. (1990). Properties of Petroleum Fluids (2 ed.). Oklahoma: PennWell Corp. ISBN 978-0878143351.

@@ Line 1: / Line 1: @@
 __TOC__
 ==Water viscosity==
-The formation water (brine) isothermal viscosity correlation is published by '''McCain''' in '''1990'''<ref name= M1991/>.
+The formation water (brine) isothermal viscosity correlation is published by '''McCain''' in '''1991'''<ref name= M1991/>.
 [[File:Water viscosity.png|thumb|right|400px|Water viscosity <ref name= M1990/>]]
@@ Line 7: / Line 7: @@
 ==Math and Physics==
-At pressures above bubble point:
+:<math> \mu_{w1} = AT^{-B}</math><ref name= M1991/>
-:<math> c_w = 1 / (7.033 P + 0.5415 C_{mg/l} - 537 T + 403300) </math><ref name= M1991/>
+:<math> \mu_{w} = \mu_{w1} (0.9994 + 4.0295 * 1e-5 * P + 3.1062 * 1e-9 * P^2</math><ref name= M1991/>
 == Application range ==