Mechanism of shales stabilization by hydrophobized poly(ethylene glycol)/K+ in water-base drilling fluids

VILLABONA-ESTUPIÑAN Santiago,de ALMEIDA RODRIGUES JUNIOR Jorge,de ABREU Carolina Ferreira,NASCIMENTO Regina Sandra Veiga

Fig. 3. Yield point of bentonite/PEG/KCl suspensions as a function of bentonite loading. In PEG / KCl system, the mass concentration of PEG and KCl was 30 g/L;The KCl concentration of blank control solution was 30 g/L.