Acid soluble packer and workover fluid

摘要

A well completion and packer fluid additive consisting essentially of carboxymethyl cellulose crosslinked with an inorganic chromium compound. The fluids prepared with this procedure have temperature stability to 250 DEG F., excellent resistance to contamination, stability in electrolyte solutions such as KCl and CaCl2 and upon acidizing the fluid retains less the 3% residue.