Oil exploration and production activities in Onshore and Offshore structures are associated with the imminent risk of gas or oil leakage, which encountering any type of ignition, can cause fires and explosions with the potential to cause substantial financial losses and deaths. In the present work, the CFD methodology was used to analyze the leakage of natural gas at a point located in the gas compression module on an offshore platform. The flow turbulence was modeled with the RANS methodology, using the two-equation K-epsilon model. Consider the critical situation, the leak was analyzed in steady state, and modeled as a point source. Two wind intensities were considered: 0.5 m / s represents the calm condition and 6.5 m / s represents the most frequent speed, and a single direction in the PROA-POPA direction. For each wind condition, four distinct leakage results (direction of gas release) were studied, i.g., from the junction between the compressor nozzle and the system supply piping flange (driven above the compressor) there are leaks in the north, south, east and west directions. From the results of overpressure (deltaP) (the difference between the ambient pressure (P0) and the maximum shock wave pressure (P maximum) obtained, points obtained were separated. The cloud volume was determined for each scenario and, subsequently, a calculation of equivalent TNT (comparison of the potential of the explosive mixture with the mass of TNT necessary to produce similar effects) was performed to identify potential risks to the offshore structure in case of ignition make dispersed gaseous material. The results obtained coincided with experimental pressure measurements under similar conditions. It was identified as the worst scenario, a leak in the compressor flange in the south direction, corresponding to the direction against the wind, with a high concentration of natural gas in a large region of the platform.