IOR-11 OPTIMUM ROCK BIT PROGRAM SELECTION BY INTEGRATED GEOSTATISTICS AND ARTIFICIAL INTELLIGENCE Abstract 1 Optimum bit selection is one of the important issues in drilling engineering. Usually optimum bit selection is determined by the lowest cost per foot and is a function of bit cost and performance as well as penetration rate. Conventional optimum rock bit selection program involves development of computer programs created from mathematical models along with information from previously drilled wells in the same area. Based on the data gathered on a daily basis for each well drilled the optimum drilling program may be modified and revised


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