yimc
Petroleum
- Jul 4, 2003
- 19
I have noticed that many oilcos tend to drill unconventional wells and run 4 1/2" casing. While this keeps the cost of the drilling program down, I do hear of multiple problems when trying to produce these wells. For example, landing a rod pump to about 70 degrees as opposed to running it to 90 degrees.
A small ESP might do better, but the 4 1/2" diameter limits ESP's from playing in this area due to pump + cable clearance.
So my dumb question is; what is the cost difference in drilling a well to say 7500 feet MD (say 4500 feet TVD) and running 5 1/2" casing to TD vs 4 1/2" casing?
A small ESP might do better, but the 4 1/2" diameter limits ESP's from playing in this area due to pump + cable clearance.
So my dumb question is; what is the cost difference in drilling a well to say 7500 feet MD (say 4500 feet TVD) and running 5 1/2" casing to TD vs 4 1/2" casing?