Abstract
Abstract An algorithm, based on the steerability of a bottom hole assembly (BHA), has been developed which can predict the complete geometry of the most suitable BHA to drill a given section of a directional well. The model is particularly versatile because it is applicable to rotary mode extended reach drilling, can be used to compare various BHA configurations to that predicted by the algorithm and can take full advantage of the steerability of variable gauge stabilizers. A field case study is presented to illustrate its usefulness.
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