Calculating Specific Gravity of Brine at High Pressure and Temperature

Click For Summary
SUMMARY

This discussion focuses on calculating the Specific Gravity (SG) of brine at high pressure and temperature, particularly for salinity values ranging from 0 to 600,000 ppm. The user seeks a reliable method to convert brine salinity to density, emphasizing that assuming SG = 1 is inaccurate for high salinities. The conversation highlights the need for specific equations or tables that account for pressure, temperature, and salinity variations. The CASC concentration calculator is recommended as a tool that provides real-time conversions between density and concentration.

PREREQUISITES
  • Understanding of brine salinity and its measurement in ppm
  • Knowledge of Specific Gravity (SG) and its significance in density calculations
  • Familiarity with high-pressure and high-temperature conditions affecting fluid properties
  • Experience with using concentration calculators or similar software tools
NEXT STEPS
  • Research equations for calculating Specific Gravity of brine under varying pressure and temperature conditions
  • Explore the CASC concentration calculator for practical applications and trials
  • Investigate published tables or databases that provide SG values for brine at different salinities
  • Learn about the effects of temperature and pressure on the density of saline solutions
USEFUL FOR

Researchers, chemical engineers, and professionals in the oil and gas industry who are involved in fluid dynamics and density calculations of brine solutions.

Sorade
Messages
53
Reaction score
1
Hello all,

I am currently trying to convert brine salinity values in ppm to the corresponding brine density.

My understanding is that I can do that using ppm * SG = mg/L . However I do not know how to get the Specific Gravity (SG) of my brine. The data I try to convert has a minimum value of 0ppm, a maximum value of 600,000 ppm and a mean of 118,000 ppm.

My understanding is that I can't simply assume that SG = 1 because I have high salinities. Most of the data I can find only refers to seawater and I am dealing with brines at high pressure and temperatures. I was therefore wondering if there was an equation to get SG in function of pressure, temperature and salinity.

Thank you for your help !
 
Chemistry news on Phys.org
Best approach: tables. Published and not that difficult to google.

Such tables are built into my CASC concentration calculator, which does the conversion between density and concentration on the fly, as you enter the data. It is a commercial product, but with a free 30-days trial.
 

Similar threads

Expansion and elasticity of brines
  • · Replies 1 ·
Replies
1
Views
3K
How do I convert specific gravity of salt water to density and concentrations?
  • · Replies 10 ·
Replies
10
Views
4K
I want to calculate degree of saturation of a brine with SG and temp known
  • · Replies 1 ·
Replies
1
Views
13K
Specific Heat at High Temperatures
  • · Replies 2 ·
Replies
2
Views
3K
What does "limit of zero pressure" mean for ideal gas temperature?
  • · Replies 14 ·
Replies
14
Views
3K
How to Calculate Atomic Density for Borated Water (750 ppm) at 300 K?
  • · Replies 16 ·
Replies
16
Views
3K
Undergrad Can Buoyancy Exchange Occur in a Gravity-Fed Closed Hydraulic System?
  • · Replies 2 ·
Replies
2
Views
3K
Two immiscible liquids in a container
  • · Replies 6 ·
Replies
6
Views
2K
Moist Chlorine & Hydrogen Psychrometric or Mollier Chart
  • · Replies 2 ·
Replies
2
Views
3K
I want to resolve to the degree of saturation of a salt solution
  • · Replies 3 ·
Replies
3
Views
3K