Single Salt Fluid Composition and Blending Tables|
The following single salt fluid tables are organized according to the CBF density. Each single salt fluid shown has three tables: (1) density and composition information, (2) cutback information, and (3) weight up information. The information in the following tables is intended as a guide. The values are representative of TETRA’s clear brine fluids; however, there can be slight variations in the values provided in the tables versus those measured in actual fluids. These variations are due to slight compositional differences inherent in the manufacturing processes.
To see the equations necessary for conversions between milligrams per liter (mg/l), parts per million (ppm), and weight percent (wt%), see Equation 22 through Equation 24.
Using the Density and Composition Tables
The density and composition tables provided here are based on dissolving commonly available commercial grade salts in fresh water. Densities in pounds per gallon (lb/gal) shown in column one are measured at 60°F. Column three shows the volume of water in barrels that, when mixed with the weight in pounds of commercial purity dry salt shown in column four, will yield one barrel at the density shown in column one. The average purity of the dry salt is given in parentheses at the top of column four. Column five is the concentration of salt on a 100% basis.
Using the Single Salt Cutback Tables
The cutback tables for single salt fluids provided here are based on weight percentages of salt in the starting fluid and the target fluid, as shown in Equation 15.
Values along the top of each cutback table show starting density, and values in column one show target density. Values in the table are fractions of a barrel of starting fluid required to make a single barrel of target fluid. For example, it takes 0.623 bbl of 9.4 lb/gal KCl to make one barrel of 9.0 lb/gal KCl when it is brought up to one barrel with fresh water. In short, first add the CBF and then bring it up to the target volume with fresh water.
Using the Single Salt Weight Up Tables
The single salt weight up tables provided here give pounds of dry chemical that can be added to one barrel of brine (with the starting density shown in column one) to achieve a density increase that ranges from 0.1 lb/gal to 0.6 lb/gal. A volume increase will be experienced and you will be able to estimate it using Equation 14. The purity of the dry chemical is provided in the title of each table.