Cased-hole logging is a critical well-evaluation technique used after a well has been drilled, cased, and often completed. It provides operators with advanced insight into the condition of the wellbore, reservoir behavior, and overall production performance. By deploying specialized logging tools through the casing, operators can diagnose downhole issues, optimize production strategies, and make informed decisions on well intervention or stimulation.
Cased-hole operations help extend the life of the well, enhance hydrocarbon recovery, and ensure safe, reliable, and efficient field development.
Evaluates the quality and integrity of cement behind the casing. This helps determine zonal isolation, detect poor bonding, and identify areas that may require remedial cementing or squeeze jobs.
Used in cased-hole environments to determine fluid saturation levels, especially distinguishing oil from water in complex reservoirs. These logs provide valuable information for waterflood monitoring, reservoir management, and enhanced oil recovery programs.
Enables selective reservoir access by creating flow channels through the casing and cement. Combined with DST, operators can evaluate formation productivity, pressure behavior, fluid characteristics, and overall reservoir performance.
Used for zonal isolation, well abandonment, stimulation operations, and pressure control. Plugs and packers ensure precise downhole sealing, allowing operators to conduct safe and efficient interventions or isolate producing zones.
Provides a detailed profile of well performance by measuring fluid movement, flow contributions, water entry points, and production anomalies. It is essential for diagnosing declining production and optimizing reservoir drainage strategies.
Critical for understanding reservoir pressure, wellbore conditions, and production behavior. BHP surveys support reservoir modeling, performance forecasting, and monitoring of drawdown and buildup trends over the life of the well.
