Big difference in well completions

The potential for profit can be enhanced considerably by good well completion design in balance with the reservoir's productivity characteristics. Long-range planning should be an integral part of any completion program. A successful program designer must keep constantly in mind the fact that at some time in the future remedial or recompletion measures will undoubtedly be required. The program should be planned so that the cost and hazards involved in such work would be minimized. Several phases of any completion program are so closely related to the drilling program that they must be planned concurrently. Completion considerations have a significant bearing on such segments of the drilling program as hole size, type of drilling and drilling-in fluids, cores, drill-stem testing, logging, casing, and cementing. For this reason, completion planning should start simultaneously with the initial planning of the drilling program. A well-completion planning guide is presented which shows one way of classifying various types of information which may be of value in overall completion program design. Also included are the various sub-programs which must be developed and coordinated into the final program.