The last four columns have discussed tools needed for a successful cable-tool drilling operation (that is, in addition to a drill rig, casing and, oh yes, a job to go on). As I will describe many more tools in the future, I have decided to number these columns.
After selecting a tool string and tools needed to drive casing, we next need a way to raise casing sections from horizontal to vertical. For a small-diameter well, such as a 3- or 4-inch, using 10.5-foot casing sections, we may stand these up by hand — especially if we have a helper and thread them to casing already in the ground. The “by-hand” approach may not prove easy or practical for welded casing, since you need to clamp the sections together to keep them straight during welding. In my area, we join very little 3- and 4-inch casing by welding, so I will limit my remarks to threaded and coupled casing.