Value of a Multi-Discipline, Life of Field Approach to Subsea Well Intervention Planning

摘要

As our industry continues to move into the deeper waters ofrnthe Gulf of Mexico, we are finding more and more complexrngeologic structures, which present increasingly challengingrndrilling and completions requirements. Due to the geologicrncomplexity, intervention will become an integral part of thernreservoir development plan in order to achieve target recoveryrnfactors. After first oil, as the development moves into day-todayrnproduction operations, subsea well interventions will playrna significant role in maximizing production rates to keep thernfacility at maximum capacity. However, increased interventionsrnwill also carry additional OPEX impact. A significantrnchallenge for any deepwater development is to identify therntypes, frequencies, and cost impact of intervention requirementsrnover the life of the field. Since the ramifications ofrnthese issues are so diverse, it is crucial that the team whichrnaddresses this issue during the define stage of the project bernrepresentative of the stakeholders involved. They must take arnholistic, or "Life of Field," approach to evaluating and modelingrnthe anticipated intervention program, in order to achievernan optimum balance between CAPEX and OPEX considerations.rnReservoir modeling, intervention modeling techniques,rnimpact on well design, equipment selection, and drilling andrnintervention vessel strategy will be addressed, as each are relatedrnto and affected by the Life of Field approach.