SYNTHESIS OF FLUID LOSS ADDITIVE OF SULFNATE TANNIC-PHONEMIC RESIN

A fluid loss additive of sulfnate tannic-phenolic resin has been synthesized with replace phenol partly.Main factors effected on product of synthesis and additive effectings on drilling fluid have been discussed.Test results have shown that fluid loss additives have good loss control effect in high temperature and pressure and abilities of anti salt and anti-acid.