A new methodology to determine the potential SAGD, "Steam Assisted Gravity Drainage", application for Venezuelan reservoirs, with °API gravity less than 20, is proposed as a first phase to select the most proper candidates. A systematic ranking of all the possible reservoir candidates using screening criteria supported by statistical methods is performed. Based on the evaluation of several analytical models a more representative analytical tool was generated to evaluate and predict the performance of SAGD process. Also, this analytical tool was used to define the critical parameters and the statistical analysis was used to estimate the relative influence of each one. Ranking method was based on a similarity approach. By defining a reference reservoir from published field tests and comparing statistical distances from it thirty-five candidates were pre-selected from a total of 1067 Venezuelan reservoirs. The best candidates should be evaluated with more details through numerical simulations. The resulting technical efficiency and economic balance will be taken as a decision criterion for a field application. This methodology will facilitate the decisions related to the application of SAGD process to increase the recovery factor in Venezuelan heavy oil reservoirs and upon its potential massive application.