Markers-based Production Logging in Horizontal Wells as a Tool to Approach Hard-to-recover Reserves of Sredne-Nazymskoye Field
The article presents a new approach to production logging in horizontal wells stimulated with multistage fracturing. The QuantumPLT technology has been applied for downhole data acquisition in horizontal laterals developing hard-to-recover reserves of the Bazhenov formation. The main objective of production logging using QuantumPLT was to identify performance of fractures by hydrocarbons and water (gel flowback monitoring) within an extended timeframe of several months. In addition, project team performed a comparative evaluation of QuantumPLT against conventional production logging. Conventional PLT used coiled tubing service with acoustics and thermometry tools. The repetitive results of comparison confirmed satisfactory convergence of both methods and enabled to scale the QuantumPLT technology to upcoming horizontal well in the Sredne-Nazymskoye field.