Sidetrack inside casing is a very effective way to exploit the residual oil and gas with low cost.

套管内侧钻是低成本开发剩余油气的有效途径。

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Positive displacement motor is widely used in sidetrack drilling inside casing because of its excellent dynamic characteristic.

由于螺杆钻具本身具有良好的动力特性，在套管内侧钻中得到广泛应用。

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Positive displacement motor is widely used in sidetrack drilling inside casing because of its excellent dynamic characteristic.

由于螺杆钻具本身具有良好的动力特性，在套管内侧钻中得到广泛应用。

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