[EN] THE USE OF OLIGO-QUATERNARY COMPOSITIONS TO INCREASE SCALE INHIBITOR LIFETIME IN A SUBTERRANEAN FORMATION<br/>[FR] UTILISATION DE COMPOSITIONS OLIGOQUATERNAIRES POUR AUGMENTER LA DURÉE DE VIE D'UN INHIBITEUR D'INCRUSTATIONS DANS UNE FORMATION SOUTERRAINE
申请人:CORSICANA TECHNOLOGIES INC
公开号:WO2013177237A1
公开(公告)日:2013-11-28
A method of inhibiting scale in a subterranean formation comprises pretreating the subterranean formation with a polyquaternary amine that serves as a squeeze life extention (SLE) agent, and then introducing a scale inhibitor pill into the subterranean formation, wherein the scale inhibitor pill includes one or more scale inhibitor compositions. For example, the polyquaternary amine may be a polymer having up to 5 quaternary amine centers, but is preferably a nonpolymeric diquaternary amine having a molecular weight of from 250 to 500. One such example is 1,3-propandiaminium, 2-hydroxy-N,N,N,Ν',Ν',Ν'-hexamethyl-, dichloride. The SLE agent is preferably introduced into the formation in a brine solution having a concentration from 0.1 to 20 weight percent. The SLE agents may be used with a variety of known scale inhibitors and scale inhibitor chemistries.