公开(公告)号：US20150330148A1

公开(公告)日：2015-11-19

申请号：US14442784

申请日：2013-11-15

Applicant: Edwin G. SPOELSTRA ,  VERMEER MANUFACTURING COMPANY

Inventor： Jeffrey James UTTER ,  Edwin G. SPOELSTRA

IPC: E21B7/04 ,  E21B10/28 ,  E21B17/10 ,  E21B3/00

CPC classification number: E21B7/28 ,  E21B3/00 ,  E21B7/046 ,  E21B10/08 ,  E21B10/28 ,  E21B17/1078 ,  E21D9/004

Abstract: In some underground boring applications the exit location of the underground bore may be located such that drill pipe and material pipe sections cannot be conveniently deployed therefrom (e.g., a basement of a building, the inside of another pipe, or a small manhole space). In such applications, push reaming functionality is often the preferred method of reaming because the pipe section can be deployed and installed from a pit where the bore is started during a push reaming operation. The present disclosure provides a new push reaming drill head as well as a new method of push reaming.

Abstract translation: 在一些地下钻孔应用中，地下孔的出口位置可以被定位成使得钻杆和材料管段不能方便地从其中展开（例如，建筑物的地下室，另一管道的内部或小的井孔空间）。 在这种应用中，推动铰接功能通常是铰接的首选方法，因为管道部分可以在推动扩孔操作期间从孔开始的坑部署和安装。 本公开提供了一种新的推动式铰孔钻头以及一种推动铰孔的新方法。