The technology of hole trajectory primary sect ion is the key of drilling in re entry horizontal Wells.

侧钻水平井轨迹起始段工艺技术，是侧钻水平井钻井工艺的关键技术。

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The technology of hole trajectory primary sect ion is the key of drilling in re entry horizontal Wells.

侧钻水平井轨迹起始段工艺技术，是侧钻水平井钻井工艺的关键技术。

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