ABSTRACT

Possibly the one factor that most affects the costs of drilling is the average footage drilled per hookup. As more information on drilling tendencies in anyone oil field become available, the number of changes in drilling hookup is reduced and the speed of the drilling operation is increased. Also, feet per hour at the bottom of the well, combined with the amount of time spent at the bottom, is perhaps the best measure of the relative efficiency

and speed of a drilling operation in a particular oil well and for a given amount of controlled footage.