In this study, a thorough investigation was conducted on an air-to-ground heat exchanger system designed for cooling of air compression equipments in oil pipe line system south of Iraq. The research involved numerical and experimental simulations for comparing non-finned tubes with finned tubes of various shapes, such as annular fin tubes, circular perforated annular fin tubes, and square perforated annular fin tubes. The system, utilizing a 1.5-meter-long, 6-inch-diameter PVC pipe buried approximately 3.5 meters deep in the ground, demonstrated effective cooling during summer and warmth in winter in Nasiriyah, southern Iraq, where the ground temperature remains relatively constant at around 30 degrees Celsius at a depth of 3 meters throughout the year. Practical experiments conducted from July to August 2023 revealed that, despite high inlet temperatures, annularly finned tubes exhibited superior heat transfer rates and higher pressure drops in both theoretical simulations and practical experiments compared to non-finned tubes. The consistent low outlet temperatures contributed to efficient system cooling. Theoretical simulations also indicated that finned tubes, particularly those in annular shapes, outperformed non-finned tubes in terms of heat transfer rates. The annularly finned tube demonstrated the most effective cooling performance despite challenging external conditions, generating the highest pressure drop among various fin shapes and non-finned tubes. Furthermore, the system showcased energy efficiency by consuming less electrical energy, emphasizing its effectiveness in providing cooling under demanding environmental circumstances.