There are lots of reasons why a well may be drilled, but not finished and producing: The operator could be waiting for a pipeline to be connected, a crew to complete the fracking, or the markets to improve.
Or it could be a well drilled to hold a lease, or a test well, and never put into production.
A drilled but uncompleted well (DUC) is a new well that has been drilled, but has not been fracked for the first time and put into production. There is also casing, cementing and other steps that need to be done before a well can start producing.
Why track drilled but uncompleted DUC wells? They are a signal of overall economic health of the oil and gas producers, as well as future production potential.Read the whole article, which explains more about the reasons behind DUC wells, by clicking here.