## ESTIMATE THE STORAGE-COEFFICIENT

The next piece of information required is an estimate of the possible
range of the well-bore storage-coefficient. This coefficient measures
the volume of fluid that enters the well-bore per unit-change
in the bottom-hole pressure. Because this is a well-bore coefficient,
it can be estimated strictly from the well-bore geometry and the
fluid in the well-bore.

**FIRST:** calculate the MAXIMUM storage-coefficient,
C(max). This value corresponds to a free fluid interface in the
well-bore and a well-head pressure of zero.

**NEXT:** calculate the MINIMUM storage-coefficient,
C(min). This value corresponds to a fluid-filled well-bore.

Calculate C(min) and C(max) and write down the values you obtain;
we need them later!

__Q: Did you calculate C(min) and C(max)
and write down the values?__

A1: Yes I did...

A2: Nope...