|
|
where
Q_{WAQ}(t) | |
J(t) | aquifer productivity index at time moment t |
p_i | initial formation pressure |
p(t) | field-average formation pressure at time moment t |
\sigma | aquifer transmissibility |
\chi | aquifer diffusivity |
This model is based on assumption of:
- Infinite Acting Radial Flow Aquifer
- Slow variation of water influx Q_{WAQ}(t) in time
See Also
Petroleum Industry / Upstream / Subsurface E&P Disciplines / Field Study & Modelling / Aquifer Drive / Aquifer Drive @model
Reference
1. Fetkovich, M.J. 1971. A Simplified Approach to Water Influx Calculations—Finite Aquifer Systems. J Pet Technol 23 (7): 814–28. SPE-2603-PA. http://dx.doi.org/10.2118/2603-PA