循环压耗的准确计算是钻头水力参数优化程序设计的基础。

Accurate calculation of cyclic pressure dissipation is the basis of programming of bit hydraulics optimization.

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PDC钻头在实钻过程中井底流场非常复杂，而优化其水力学参数是提高钻头钻井能力的有效手段。

The flow field of PDC bits is very complicated during drilling process, while optimizing its hydraulics parameters is an effective method to improve its drilling performance.

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