Method of protecting a cased pipeline from corrosion

摘要

Tall oil pitch is used as casing fillers in the interstitial spaced between a pipeline and a surrounding casing pipe. The tall oil pitch can be used per se or can be modified by: increasing its specific gravity above 1.0; increasing its pour point or dropping point; increasing its viscosity; decreasing its pumpability temperature. The tall oil pitch is pumped into the interstitial space between the pipeline and the casing pipe.