The early concepts of drilling optimization was dated back to the 1958’s but have only been a viable for rotary speed, Weight on bit and rate of penetration (R-W-N) models followed by more efficient models as Bourgoyne and Young models. Improvements in drilling optimization around the world continue to focus on accuracy and efficiency over decades via different criteria's and disciplines. The objective of this paper is to review Bourgoyne and Young model development sequences together with area's need to be improved. Studies have been classified depends on it is scope directions to three groups: Multiple Regression Approach Group; Alternative Mathematical solutions group and Accuracy Improvement group for easy identification of added values together with critical need to be improved to each scope individually. Although these groups are not really separate from each other results showed lack in solving the shortage of bit wear information for all data points except end of bit run. Also there was a mostly absence of simulator application and scenario's for more strong verifications and accuracy.