Vol. 16 No. 3 (2025): June
			
		
							Cover image by Mei-Chun Li on pages 211-228. The image illustrates the cooling effect of phase-change microcapsules in a high-temperature wellbore. When the temperature exceeds the phase-change threshold, the core material melts, absorbing significant heat and thereby reducing the drilling fluid temperature. This thermal regulation improves drilling efficiency and operational safety.
				
					Published:
				
				
					2025-06-25