Well operating envelopes are defined to ensure optimal production performance,while maintaining completions integrity.Operating envelopes(OE’s)however,have to be kept live to reflect the dynamic nature of well performance.This paper presents how the operating envelops of subsea production wells in a deepwater field are being monitored and utilised as enablers to realising production targets without compromising relevant constraints such as reservoir pressure,drawdown and well integrity. A review of the current parameters employed to determine the required well operating envelope was carried out with a view to ascertain any window of opportunity for optimization.Downhole velocities, drawdown,produced sand/fines data were evaluated to help mitigate completion impairment and loss of installed sand control equipments. An extensive post implementation analysis was also carried out to help revalidate the basis of well operating envelope.This provides a platform for remedial action,as any deviation from expectation is found out.This paper will provide an overview of how the operating envelope for Producer 1 was reviewed and implemented to maximize production from reservoir Z.The methodologies and workflow will be discussed extensively to demonstrate how the Field team has effectively arrested production decline in the Z reservoir by proactive review and update of its wells operating envelopes.
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