Difference between revisions of "Water compressibility"

Revision as of 05:39, 2 October 2020

The formation water (brine) isothermal compressibility data is published in 1990.

Water compressibility data ^[1]

B_w = (1+\Delta V_{wP})(1+\Delta V_{wT})

^[1]

where

\Delta V_{wP} = -1.95301(10^{-9}) P T - 1.72834(10^{-13}) P^2 T - 3.58922(10^{-7}) P - 2.25341(10^{-10}) P^2

\Delta V_{wT} = -1.0001(10^{-2}) + 1.33391(10^{-4}) T + 5.50654(10^{-7}) T^2

The correlation is valid through the full range of solids concentrations, temperatures to 260F, and pressures to 5000psia^[2].

Example source ^[1]

Calculate water formation volume factor at 3176 psia and 165°F?

\Delta V_{wP} = -0.0047241

\Delta V_{wT} = 0.027

B_w = 1.022

B_w

= water formation volume factor, res bbl/STB

P

= pressure, psia

T

= Temperature, °F

\Delta V_{wP}

= pressure correction, res bbl/STB

\Delta V_{wT}

= temperature correction, res bbl/STB

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

@@ Line 1: / Line 1: @@
 __TOC__
 ==Water compressibility==
-The water formation volume factor represents the change in volume of the brine as it is transported from the reservoir conditions to surface conditions<ref name= M1990/>.
+The formation water (brine) isothermal compressibility data is published in '''1990'''.
-The units are reservoir barrels per surface barrel at standard conditions, res bbl/STB.
+[[File:Water compressibility data.png|thumb|right|600px|Water compressibility data <ref name= M1990/>]]
-[[File:Water compressibility.png|thumb|right|600px|Water compressibility]]
 ==Math and Physics==