The Bulla-Deniz field, located in the Azerbaijani sector of the Caspian Sea, is one of the country's most significant hydrocarbon reservoirs, rich in oil and gas potential. Since its commissioning in 1975, the field has been a focal point of exploration and production activities, characterized by its deep wells and complex geological structure. Situated in the northern part of the Baku Archipelago, the field has been extensively studied through geophysical surveys, mapping, and drilling, revealing an asymmetrical brachianticline structure extending from northwest to southeast. Despite decades of exploitation, certain areas, particularly the southwestern flank, remain unexplored, leaving their hydrocarbon potential unknown. The Bulla-Deniz field is primarily known for its gas-condensate reserves, concentrated in Mesozoic and Cenozoic sedimentary rocks. Estimated reserves include approximately 15-20 billion cubic meters of gas, 2-3 million tons of oil, and around 1 million tons of condensate. The field's geological structure is complex, with key productive layers such as the Red Beds, the Miocene complex, and the Upper Paleogene-Red Beds transition. The Red Beds, located at depths of 5-7 kilometers, are particularly significant due to their high porosity and permeability, making them the primary zone for gas-condensate accumulation. The Miocene complex, at depths of 3-5 kilometers, contains both gas and oil reserves, offering further potential for exploitation. Modern seismic surveys and geochemical analyses suggest that some blocks within the field remain underexplored, indicating the possibility of additional hydrocarbon reserves. However, the Upper Paleogene-Red Beds transition, located at depths exceeding 6 kilometers, presents challenges due to high pressure and temperature, requiring advanced extraction technologies for future development. The Bulla-Deniz field continues to play a strategic role in Azerbaijan's energy sector. Its full potential can be unlocked through comprehensive exploration and the application of modern extraction technologies. The field not only contributes significantly to the country's current energy production but also holds promise for future discoveries, reinforcing its importance in the region's hydrocarbon industry. This article examines the geological features, hydrocarbon reserves, exploitation history, and future development prospects of the Bulla-Deniz field, highlighting its critical role in Azerbaijan's energy landscape.