The image above represents the reservoir radius.

To compute for the reservoir radius, one essential parameter is needed and this parameter is **Well Spacing (A).**

The formula for calculating the reservoir radius:

r_{e} = √[^{43560A } / _{π}]

Where;

r_{e} = Reservoir Radius

A = Well Spacing

Let’s solve an example;

Given that the well spacing of an reservoir radius is 42. Find the reservoir radius?

This implies that;

A = Well Spacing = 42

r_{e} = √[^{43560A } / _{π}]

r_{e} = √[^{43560 x 42 }/ _{π}]

r_{e} = √[^{1829520 }/ _{π}]

r_{e} = √582354.3

r_{e} = 763.12

Therefore, the **reservoir radius **is **763.12 ft.**