Kp. O'Driscoll et al., New treatment for removal of mud-polymer damage in multilateral wells drilled using starch-based fluids, SPE DRILL C, 15(3), 2000, pp. 167-176
Significant improvement in production from horizontal, multilateral wells h
as been realized through the application of specific enzyme breaker (SEB) t
echnology for the removal of natural starch polymers used in drilling opera
tions. This new treatment allows placement of a fluid to remove polymeric m
ud damage at the cessation of drilling operations for each multilateral sec
tion, which could not otherwise be re-entered for cleanup and effective sti
mulation during completion of the well.