Research on Retarding Crosslinked System for Profile Control
Cheng Jian-da · West-china Exploration Engineering · 2005
The retarding crosslinking mechanism of polymer gel system is discussed. And in accordance with the technical needs of deep profile, a new high-efficiency retarding crosslinked agent composition is developed, which can retard gelation time of the polyacrylamide plugging agent gel from 3 to 6 days. This plugging agent possess such advantages as easy pumping, adjustable crosslinking time, high gel strength after gelation, and better plugging rate for artificial cores, which make deep profile control feasible.