Section 5 - Well Drilling Methods - Michigan
2016-2-26 · pipe is added. The drive mechanism for the drilling operation is provided either at the rotary table (table drive) or at the swivel (top head drive). The rig also contains a cable called a casing line which is used to raise and lower sections of drill pipe and casing. In rotary drilling, the borehole size is larger than the casing size.
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