The Example $3\mathrm{.}1$ in the Lee text, Well Testing provides the

following data. These data were obtained from a constant rate

"pressure drawdown" test performed on an oil well $($use the liquid

relations for analysis$).$

Reservoir properties:

$=0\mathrm{.}039,{}_x=0\mathrm{.}198ft,c_c=1710-6{}^{-1},h=69ft$

Oil properties:

$B_o=1\mathrm{.}136R\frac{B}{S}TB,{}_0=0\mathrm{.}8cp$

Production parameters:

$p_i=4412$ psia

$q_0=250ST\frac{B}{D}$

Blassingame provides the following plotting functions, $($i$,$e$,$Test,Data

and Data Functions$).$ I have added $ln(t)$ with just two decimal points

to this table as well:

Your are asked

$($a$)$ To reproduce the $ln(t)$ derivative of $p$ for for $L=0$ and $L=0\mathrm{.}1($use

Bourdet formula for both $L$ values$)$

$($c$)$ Discuss your results compared the Blassingame results. are they the

same for each time point. if different which one is correct and why?

$($d$)$ Plot both $p$ and $p^{\text{'}}$ against $t$ on a log log graph

$($e$)$ Identify the IARF region on the derivative plot. do you see a boundary

effect?

$($f$)$ From the derivative plot do you see a well bore storage and skin effect

$($positive or negative$)?$

$($g$)$ Use IARF analysis via semilog graph to calculate permeability and the

skin factor

$($h$)$ Calculate the wellbore storage coefficient using a type curve matching

technique

$t,br$

pok Dsia

$p,$

$p^{\text{'}},$

$lnt$

$($Dete that there are ne "yerd" early time data$)$