Influence of ionic hydration inhibitors on triple inhibition system mud properties – clay rock swelling.
Vol. 34, no. 2 (2017), s. 629-636, 
Recently past years, while drilling clay rock, mainly mud with triple inhibition system is applied. In the light of abovementioned fact, it can be seen growing importance of studies related to improvement and development of this type of mud formulas. The paper describes undertaken studies of QSE Pellets swelling and linear swelling (LST) of the Miocene shale under influence of different concentration of chosen clay rock hydration inhibitors in mud with triple inhibition system.