PEFORM-X stands out as a non-fluorescent, non-asphaltic shale stabilizer that effectively substitutes sulfonated asphalt in water-based drilling fluids, without its environmental unfriendly properties whilst still maintaining all its beneficial attributes. PEFORM-X is engineered through modifying high carbon alcohol esters to be partially water-soluble to achieve a balance between hydrophilic and lipo-philic properties, which play a pivotal role in the formation of a robust filter cake. Its ability to enhance filter cake quality, stabilize shales, control fluid loss, improve lubricity, and maintain fluid stability under various conditions makes it an invaluable component of modern drilling fluid formulations.