I found this little tidbit about oil that's so simple even your granddaddy can understand it:
Although every oil producing nation, including the United States, puts all the oil it produces on the open international market and buys it back at prices set by the OPEC-dominated consortium, it is nevertheless important for a nation to produce and sell as much oil as it can. The United States does not produce enough oil to enable its oil industry to sell and make outrageously high profits like other high-producing nations do. Even though Venezuela and Mexico puts all its production on the international market and buys it back at OPEC prices, it nevertheless sells so much oil to the open market at OPEC prices that they can use the excessive profits to lower fuel prices for their citizens. In oil-rich Venezuela gasoline is about 14 cents a gallon and in Mexico about $2.40 a gallon.
If the United States produced and sold all the oil it is capable of producing, it too would see its oil companies drastically lower fuel prices for American consumers. In other words, the more oil a nation produces and sells the more profit its oil companies make and is able to use those profits to lower prices for its own consumers.
Of course, if oil companies had their way, they would keep all the profits, but there is no government on the planet that allows them to do that -- except of course the Arabs, but they have so much oil money they don't mind selling it back to their citizens for a nickel a gallon.