This discussion would be a long one with many details needed. The number of drills would not be smaller than what I think, lol. That's assuming what I know or don't know. The owner operator contracts to return typically are required maintenance and asset assessments to meet environmental requirements and corporate captial evaluations. Capping a well/ wellhead is dependant on if its plugged or a suspended well and dormancy of operation, and to reinstate (uncap) the well requires a large capital investment to start up, which in many cases costs as much as drilling new bore hole with casing and pressure, flow regulators.