Well integrity management in mature fields: a state-of-the-art review on the system structure and maturity

Abstract Nowadays, oil and gas (O&G) fields are maturing creating new threats. This urged the operating companies industry researchers to have intensive focus on well integrity (WI). Building Well Integrity Management System (WIMS) establishes standardized criteria guarantee that of all wells is preserved during their lifespan, functions properly in healthy condition, able operate consistently fulfill expected production/injection demands. Moreover, exploration production (E&P) put Health, Safety, Environment (HSE), assets, production, local public image as top priority businesses. Having effective WIMS at times throughout phases reduces frequency major failures thus helps be track regarding aforementioned considerations. In this paper, we present a comprehensive review system structure maturity mature fields. state-of-the-art highlights efforts made by different O&G operators over world develop start application WIMS, which varies widely due differences main WI challenges recurring each field or concession. it lists goals expounds stages launching WIMS. addition, key elements, around program structured, discussed presented for various operators. The five elements accountability responsibility, operations procedures, intervention tubing casing program, wellhead X-tree maintenance overviewed. Furthermore, paper assesses sustainability through demonstration models, scrutiny levels, analysis transformative convert into strategic framework. Risk management systems analytics also covered thoroughly discussed. reviewing literature covering assets—all last 15 years—it was found real progress area, established many approaches. However, introduced lack universality few them applying artificial intelligence powerful tool boosting system. most obvious finding emerge from crucial must implemented matured lifecycle. findings study can help better framing pillars robust operable concessions, hence improving performance worldwide.