Citric acid is used to reduce the pH of drilling fluids and also treatment of cement contamination. It also acts as a polymer stabilizer and one of they key raw material in ion chelation process.
Easily available ex stock Houston
Multifunctional acid and safer than HCL
Reduces pH
Removes calcium in pretreat process
Sequesters soluble iron to prevent polymer crosslinking
As compared to other acids less reactive and safer