Production Log

Definition - What does Production Log mean?

Production Log is a type of log used to determine the contribution of each zone (in case of co-mingled stacked sands or multiple zones) in the total production or injection. The log helps in allocating production of hydrocarbons on zone by zone basis. Any faults such as leaks or cross flows in the oil or gas producing wells can also be diagnosed using Production Logs.

Petropedia explains Production Log

Production logging tools are used to develop Production Logs. These tools are run down the wellbore and provide behavior and nature of fluids inside the well during production or injection. Once the logs are prepared, dynamic analysis of well performance is done at different production zones. The logs are also used to monitor the results when well stimulation is performed. Production Logs are produced for all types of wells (vertical, deviated or horizontal). The production logging tools used are modular and can be combined with array of sensors that logs the production data. These tools provide real-time production data and generate logs at continuous intervals during the production. Some of the tools used include:

  • Full bore flow meters
  • Inline flow meters
  • Basket flow meters
  • Continuous flow meters
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