If you have or potentially have oil or gas reserves on your land in California, you may believe that you have "struck it rich." And that may be the case. Your land could hold a substantial reserve of oil and gas that is viable for production. A well or group of wells could produce for many years, and they could add greatly to your income and your overall wealth.
If you own a piece of land in California and it potentially may have viable oil and gas reserves beneath it, it is important that you understand exactly what it is that you mean when you say you "own" the property. Property law is ancient, as ownership of land has always been important, and land does not disappear the way more transitory objects do.