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Abstract
Drilling bit optimization is one of the key concepts in drilling engineering. It is considered as one of the economical factors in an overall well budget. Computers are strictly used as decision-making systems in the optimization calculations. Formation parameters are easily processed according to drilling bit selection criteria by the help of computer programs. Although the computer program is an interface by which the user makes the computer do some jobs, the database is another important part of this decision-making systems. Data is stored and can be modified in the database. Also, necessary calculations can be accomplished by the database so that results of these calculations and data can be reached by the computer programs. In this study, a database holding field data is designed and a computer program calculating necessary parameters and related excel file holding output are prepared. Although mostly lowest cost per foot is preferred and there isn't an absolute method for choosing optimum drill bit, this design can be helpful in the selection period.