Why many mature wells underperform

Hi everyone,

I recently joined the forum and wanted to contribute from a technical perspective. I’m a reservoir engineer with 15 years of experience, having worked in major oil & gas companies as well as with private operators.

One recurring observation in mature or low-rate wells is that production underperformance is often attributed to reservoir depletion, when in reality the limitation may be operational or surface-related.

This can create confusion between:

  • True reservoir decline

  • Mechanical or artificial lift constraints

  • Surface handling or backpressure effects

From a technical standpoint, distinguishing between these factors is critical before drawing conclusions about remaining potential.

For those willing to share: When a well underperforms, what data or indicator do you personally trust the most to decide whether it’s a reservoir issue or something else?

1 Like