可用于转盘钻或井下动力钻具。

Can be used on rotary or down hole motor.

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动力钻具配合PD C钻头钻井，可以大大地提高机械钻速、降低成本、缩短钻井周期。

By dynamical drilling tools matching with PDC drilling bits, drilling rates are able to be increased greatly, drilling costs are decreased greatly, and the drilling cycles are shortened.

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注气欠平衡钻水平井技术面临的两大技术难题是井下动力钻具不能正常工作和常规MWD无法正常工作。

The two technical problems faced by the technology of under-balanced horizontal well drilling with gas injection are the down-hole motor and the conventional MWD can't work normally.

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