I work for a large oil and gas company, specifically supporting an offshore oil and gas production facility. Currently, we are attempting to use OEE and potentially Process Weibull to determine actual production losses and where to focus our attention for improvement efforts. We are having difficulty determining the rate aspect of OEE and how changes in rates will affect the data in a Process Weibull. The issue is we depend on oil reservoirs for production and since the operation has been producing for over 10 years, we are starting to see a decline from the reservoirs which occurs naturally over time. While we do experience losses due to reliability issues, how can we consider the changes in rate do to natural reservoir decline and the impact on OEE/Process Weibull?
Is there anyone with an oil and gas production company experiencing declining production due to natural depletion of oil reservoirs and using OEE/Process Weibull to track losses?
Any feedback would be greatly appricated!