公开(公告)号：US4079795A

公开(公告)日：1978-03-21

申请号：US652617

申请日：1976-01-26

Applicant: Wilfried Sackmann ,  Georg Hurtz ,  Fritz Tibussek

Inventor： Wilfried Sackmann ,  Georg Hurtz ,  Fritz Tibussek

IPC: E21D9/00 ,  E21D9/04 ,  E21D9/10 ,  E21B3/06

CPC classification number: E21D9/1093 ,  E21D9/003 ,  E21D9/04

Abstract: A method for drilling boreholes utilizing a plurality of simultaneously operated boring tools. During a drilling operation the loading forces on the tools are measured and constantly compared with a predetermined limiting value representative of a limiting loading value and the variation of a limiting loading value with respect to time. If these limiting values are exceeded at least one working parameter of the tools is adjusted such as feed force, feed speed or track speed of the tools. Apparatus for carrying out the method is also disclosed.

Abstract translation: 一种利用多个同时操作的钻孔工具钻孔的方法。 在钻井操作期间，对工具上的装载力进行测量并且与表示极限载荷值的预定极限值和限制载荷值相对于时间的变化恒定地进行比较。 如果超过这些极限值，则调整工具的至少一个工作参数，例如进给力，进给速度或工具的轨迹速度。 还公开了用于执行该方法的装置。