Present worth expectation for a risky job

Input(s)

$\overline{X_{A}}$: Present Values of Discounted Probable Outcomes that includes all Costs except Initial Speculative Cost (\$)

$C$: Dry Well Drilling Cost in Initial Investment (\$)

Output(s)

$X_{E}$: Present Worth Expectation per a Risky Job (\$)

Formula(s)

$$ \mathrm{X}_{\mathrm{E}}=\overline{\mathrm{X}_{\mathrm{A}}}-\mathrm{C} $$

Reference(s)

Serpen, U., Petroleum Economics, Course Notes, ITU Petroleum and Natural Gas Engineering, Istanbul, Turkey, (2008) Page: 92.