一种新型正电胶(Y-1)的研制

通过结晶氯化铝加热并水化合成一种新型正电胶Y-1,其生产工艺简单,产品的回收率高,生产成本和原料成本比现有的正电胶生产工艺低。性能测试表明:该正电胶与其它处理剂的配伍性好,在各种钻井液体系中加入Y-1后,钻井液的流变性、抑制性、抗膏盐污染能力等多项指标均优于用现有正电胶配制的钻井液体系,加有该正电胶的钻井液体系的动切应力高、动塑比值高、塑性粘度低、水眼粘度低、卡森切力及剪切稀释指数高、初终切力高且相近等,其正电胶特性比现有的产品更为突出;由该正电胶组成的钻井液体系能抗2%石膏、10%氯化钠的复合盐污染,至少能抗140℃以上的高温,且页岩回收率大于90%,由此说明该正电胶是一种优良的钻井液添加剂。

DEVELOPMENT AND PRODUCTION OF A NEW KIND OF CATIONIC COLLOID

A new kind of cationic colloid used in drilling fluids is introduced. Theological properties, compatibility with other additives and inhibitive property of this frilling fluid system were studied in laboratory, and lots of data show that this drilling fluid system is more efficient than MMH and COS-1 drilling fluid system. This drilling fluid system can e used in high temperature system (more than 140°C) and in high slat lime concentration system, and shows good performance. The cationic colloid can be prepared in laboratory with aluminum chloride by heating aluminum chloride to get to caustic aluminum chloride and then using aluminum chloride reacting with water to produce this cationic colloid.