Search results

...[[:file:Land rig example drawing.png|Figure 1]]) while drilling and to the drawworks (15) when [[trip]]ping. ...[[hole friction]] and the correct amount of weight to put on the bit. The drawworks also transfers power to make up and break out the drill string via the tong

...movement of the drill string. Common attachment points are the drill line, drawworks drum, or crown sheaves.

* drawworks http://www.glossary.oilfield.slb.com/en/Terms/d/drawworks.aspx