METHOD FOR ACID BOTTOM-HOLE TREATMENT

摘要

A method for acid bottom-hole treatment includes sequential injection of buffer liquid as solution of ammonium chloride, acid solution based on hydrochloric acid and its pressing to the bed with buffer fluid. After preliminarily injected buffer liquid the dehydration of the bed is carried out by means injection of dehydration agent of loamy components of rock. After that acid solution is injected, this comprises supplementary acid solution that includes hydrochloric acid and main acid solution that includes the mixture of hydrofluoric and hydrochloric acids.