Page tree

Versions Compared

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

@wikipedia  

A means of predicting future oil or gas well production based on past production history. 

The first and the most popular decline curve methodology is Arp's decline model:

...


Mathematical model predicting the fluid production from a reservoir based on the past production/injection history.

It can be applied to any fluid production: water, oil or gas. 

It does not involve the knowledge of formation pressure or bottom-hole pressure and is solely based on production/injection history data.

This comes as advantage in quick estimation of production perspectives and as disadvantage in accurate long-terms predictions.


There are many popular decline metrics, including the most popular:

Arpsconventional reservoirs
Duongtight gas, shales
Power Lawtight gas, shales
Neural Networkwide-range


The first historically and the most popular Decline Curve Analysis methodology in conventional reservoirs is Arps decline model:

Image Added

Image Added

Image Added

Fig. 1. Exponential Production DeclineFig. 2. Hyperbolic Production DeclineFig. 3. Harmonic Production Decline


...

It does not involve the knowledge of formation pressure or bottom-hole pressure and solely based on production data.

See Arp's DCA @model for mathematical Arp's model.

See Also

...

Petroleum Industry / Upstream /  Production / Subsurface Production / Field Study & Modelling / Production Analysis / Analytical Production Forecast

DCA Arps @model

DCA Power Law @model


References

...

DCA @petrowiki

DCA @feketeArp's DCA @model