Reservoir pressure dynamics away from wellbore and boundaries is representative of two very important complex reservoir properties: transmissibility and pressure diffusivity .
In case the reservoir flow has been created by a well (vertical or horizontal) it will trend to form a radial flow away from boundaries and well itself.
In this case a pressure drop and well flowrate can be roughly related to each other by means of a simple analytical homogeneous reservoir flow model with wellbore and boundary effects neglected.
Inputs | Outputs | ||
---|---|---|---|
total sandface rate | reservoir pressure | ||
initial formation pressure | |||
transmissibility | |||
pressure diffusivity |
|
Radial fluid flow | Homogenous reservoir | Infinite boundary | Zero wellbore radius | Slightly compressible fluid flow | Constant rate production |
---|---|---|---|---|---|
|
|
|
|
|
Late-time response | |
---|---|
|
Physics / Fluid Dynamics / Radial fluid flow / Line Source Solution
[ Radial Flow Pressure @model ] [ 1DR pressure diffusion of low-compressibility fluid ]