A Double Action P-D (Polymer-Deep Eutectic Solvent) Based Shale Inhibitor in Drilling Mud

Shale stabilization is very significant during drilling to avoid wellbore stability issues. Water based fluid results into shale swelling on contact with formation. Different additives are added in the mud which inhibits by stabilizing charge clay surface. Various polymers and different Deep Eutectic Solvents (DES) have been proven be successful inhibitors, but their performance can further improved using a combination of polymer DES. This research features double action P-D (Polymer – Solvent|) inhibitor formulated Potassium Carbonate DES modified oxazoline compares its inhibition KCl (Potassium Chloride). Linear Swell meter has used after compressing Na-Bt (Sodium bentonite) wafers at 1600 psia analysed 24 hours. Moreover, surface tension, d-spacing, Zeta potential inhibitors-based samples measured justify understand results. The showed best 76% maximum decline 36% 73% Surface tension Potential respectively. associated capability form hydrogen bond exhibit Vander wall forces altogether.