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液体活化沥青(NH—3)是多级多组分混合体系,是一种新型的钻井液多功能添加剂。经室内系统试验和川东地区65口井的推广应用表明:NH-3适用于密度1.06—2.40g/cm~3的各种水基泥浆体系和浅井至深井,具有显著的防粘卡、防塌、改善泥饼质量和泥浆流变性的优良特征;有一定的抗盐、钙污染能力;抗温可达150℃;与稀释剂复配使用能增强稀释剂的降粘切效果;与其它处理剂配伍性好;用于井身质量不好、大斜度井、超重泥浆井、小井眼取芯井、高压差井,高渗透性地层亦具有明显的防粘卡功能。加量1～4%,可降低k(?)15～46%,降低HTHP (?) 20—30%。
Liquid activated bitumen (NH-3) is a multi-stage multi-component mixing system, which is a new multifunctional additive for drilling fluid. The indoor system test and the popularization and application of 65 wells in eastern Sichuan show that NH-3 is suitable for various water-based mud systems with density of 1.06-2.40g / cm ~ 3 and shallow well to deep well, And improve the quality of mud cake and mud rheology of the fine features; have a certain resistance to salt, calcium pollution ability; temperature up to 150 ℃; with the use of thinners can enhance the viscosity of the thinner slimming effect; compatibility with other processing agents Good; for poor well quality, high deviated wells, overweight mud wells, slimhole coring wells, high pressure well, high permeability formation also has significant anti-sticking card function. Adding 1 ~ 4%, can reduce k (?) 15 ~ 46%, reduce HTHP (?) 20-30%.