The invention provides a foam control formulation in the form of a microemulsion, the formulation comprising: (a) from 5 to 70% w/w of primary surfactant, this surfactant having an HLB of from 1 to 12 and/or a cloud point of from 20 to 70° C.; (b) from 2 to 40% w/w of water-insoluble organic carrier liquid; and (c) water. Also provided is the use of this formulation to prevent and/or reduce foam in a fluid system, or as a processing aid to control foam production in a fluid system. The formulation may be used in an aqueous fluid system, such as an oilfield.
本发明提供了一种微乳液形式的泡沫控制配方,该配方包括:(a) 5% 至 70% w/w 的主表面活性剂,该表面活性剂的 HLB 为 1 至 12 和/或浊点为 20 至 70°C;(b) 2% 至 40% w/w 的不溶于
水的有机载液;以及 (c)
水。本配方还可用于防止和/或减少流体系统中的泡沫,或作为加工助剂控制流体系统中泡沫的产生。该配方可用于
水性流体系统,如油田。