This paper describes laboratory experiments demonstrating that the use of polymer linkage specific enzymes is effective in breaking the starch polymer constituent of sized salt fluid loss control materials (FLCMs). It is further demonstrated that the linkage specific enzymes are efficient in reducing the near-wellbore damage induced by the starch polymer that makes up roughly 75% of the FLCMs polymer content. As a result of the laboratory work presented here, it is shown that return permeabilities arc in the 8098% range without the use of acid systems.

You can access this article if you purchase or spend a download.