Estimating Flow Profile and Composition in Horizontal Wells While Draining the Oil Rim with a Massive Gas Cap

Abstract

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.