RE:RE:RE:Fair Market Value: $ 720 billion (Shorts to be FRIED)you are right it can be higher but primary receovery of petroleum hydro carbons typically does not exceed 10%. Most of the time after that its Enhanced Oil recovery (EOR) or secondary recovery methods. Water/polymer floods. You can even get into tertiary recovery, Gas or CO2 injection as well. All of these as long as the rock properties allow for it can increase your recovery rate.