Is potassium chloride a good shale inhibitor?

Potassium chloride (KCl) salt has been found to be more effective in the development of inhibitive water based drilling fluid system due to its high shale inhibition capability (Oort, 2003).

Can polyacrylamide/clay nanocomposite be used as drilling fluid additive?

The troublesome shale formations need special formulation of drilling fluids having high shale inhibition characteristics to mitigate wellbore instability problems. In the present study, polyacrylamide/clay nanocomposite (PANC) was synthesized and used as drilling fluid additive.

Why is polyacrylamide used in wellbore encapsulation?

Many industries use polyacrylamide to mitigate wellbore instability problems arising due to swelling and dispersion of shale and cuttings inside the wellbore because of its unique property of shale encapsulation.

Can clay nanoparticles improve thermal stability of polyacrylamide?

The TGA curves of partially hydrolyzed polyacrylamide (PHPA) and synthesized nanocomposite are given in Fig. 4. The incorporation of clay nanoparticles into the polyacrylamide polymer matrix was found to enhance the thermal stability of the polyacrylamide (Cui et al., 2008).

Does synthesized composite have good filtration control properties in drilling mud?

Synthesized composite had good filtration control properties in drilling mud. High shale recovery was obtained with synthesized composite. The troublesome shale formations need special formulation of drilling fluids having high shale inhibition characteristics to mitigate wellbore instability problems.

Does potassium chloride increase shale encapsulation effect?

The shale encapsulation effect of polymer is increased in the presence of potassium chloride (KCl) salt, which also aids in the inhibition of swelling tendency of shale (Mahto et al., 2013, Fink, 2012, Taylor, 2003, Clark et al., 1976). However, it has relatively low strength, and low salt tolerance.