The influence of ionic hydration inhibitors on dual inhibitor system mud properties – clay rock swelling.
Sławomir Wysocki, Rafał Wiśniowski, Magdalena Gaczoł, Wiktor Nowak
Vol. 33, no. 4 (2016), s. 671-678, 
Various organic and inorganic compounds can be used as the hydration inhibitors. The main purpose of this paper is the examination of five different ionic hydration inhibitors: KCl, K₂CO₃, HCOOK, NH₄Cl, CaCl₂. The paper contains survey findings of the influence of the abovementioned inhibitors different concentrations on technological parameters of drilling muds with dual inhibitor system and swelling of clays.