Two-stage PDC bits advance ROP effectively, because a section of smaller hole drilled first released the stress of formations and formed a large free face.

  • 双级PDC钻头通过钻出一段小井眼释放地层应力和产生一大的自由面,有效提高机械钻速。

  • 互联网摘选 2025-01-19 22:15:14

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