Over time, corrosion in a pipe causes metal loss which reduces the amount of stress a pipe can be exposed to before failure. A radial thickness measurement of the corroded pipe allows for a quantitative analysis of the pipe's strength by identifying areas of significant material loss. The effects of metal loss defects on a pipe compound when the defects are close enough to interact. Thus, the identification and characterization of interacting defects as a defect cluster is required when calculating the remaining pipe strength. A Python-based Techlog* wellbore software platform plugin was developed to provide an analytical workflow to detect and characterize the impact of metal loss defects and defect clusters on remaining pipe strength for downhole wellbore integrity applications. The developed plugin is a fully customizable workflow which can be adapted to any well integrity scenario and pipeline regulatory body standards such as ASME B31G, subsequently meeting clients' reporting requirements. The innovative workflow has additional potential to be ported to completely new applications utilizing various alternative downhole measurements.

The project presents the results of the production logging campaign performed in horizontal wells of the Korchagina oil gascondensate field. FSI-MaxTrac tool was run for inflow profiling purposes. Obtained results allowed to: • Assess the multiphase fluid dynamics along the wellbore • Identify the oil, gas and water inflow zones • Analyze the presence of cross-flow behind casing and assess the swelling packers integrity • Perform the completion effectiveness and horizontal drain productivity analysis. This was the first time in this field when production logging was performed. Comprehensive analysis of OH logs and FSI data helped to better understand the reservoir nature and determine the source of gas. Production data obtained with FSI technology allowed the client to optimize well flowing regimes; to determine the main directions for future downhole operations, workover procedures and bottomhole zone treatment in order to reduce the inflow of free gas.

No abstract