Practice A$=-=-$Pressure distrilbution

Pe$=100$atm, Pw$=90$atm, Re$=1000$cm$,$ rw$=10$cm

$P=P_e-\frac{P_e-P_w}{ln(\frac{r_e}{r_w})}ln(\frac{r_e}{r})$

$(1)$ Calculate the pressure where $r=10,100,200,300,400,500,600,700,800,900,1000cm?$

$(2)$ Draw the pressure drop funnel curve according to the calculation results of $(1).$ Select $(10,90)$ as the original point of the coordinate system.

$(3)$ Draw the filtration field diagram.