Challenge: Understand the reason for low reservoir performance. Optimize production.
Artificially produced wells can’t be logged by the Production logging survey for reservoir performance evaluation unless Y-tool or Dual Wellhead is part of well completion. The presented case study is an ESP well with a gross rate of 60 m3/d and WC of 5%. The reservoir zone consists of 5 perforation intervals. When ESP failed, Workover Rig was sent to the well to replace ESP. Thus, it was an opportunity to perform Production Logging Services through the FlowJet pump for reservoir performance evaluation.
Methodology of Solution
A ESP pump was pulled by workover rig and FlowJet pump run in hole on workover rig tubing. Production logging survey was performed by North Side Production Logging Tools in Static, Flowing and Transient modes at different flowing regimes (drawdown) created by FlowJet pump. MPLT interpretation results were delivered to the Client in 12 hours after completion of the logging.