A new was put on production and initially produced $400ST\frac{B}{D}$ with a GOR of $1800SC\frac{F}{S}TB.$ The well is expected to decline exponentially with an effective decline rate of $30\frac{\%}{?}$ Year.

a$.$ Estimate the production rate at the end of the first year in STB$/$D$.$

$D_i=\frac{0\mathrm{.}3}{y}$ear

GOR$=1800SC\frac{F}{S}TB$

$a_i=400STB$

b$.$ Estimate the oil and gas production for the first year in barrels and MCF $($assume that the GOR remains constant$).$

c$.$ Schedule annual oil and gas production for the first five years.

d$.$ Assume the final rate of the well is ten STB$/$D$,$ what is the productive life of the well in years?

e$.$ Estimate the Ultimate oil and gas Recovery of the well in barrels and MCF$.$