You know, there are misconceptions about the Middle East. OK not every Arab country is rich and has oil flooding on the streets! The Arab countries that sell oil are Saudi Arabia which actually produces less than Canada does. Also Kuwait and Iraq. You may include Qatar and Bahrain but they don't have a lot. So you got Egypt, Jordan, Lebanon, Palestine, Libya, Morocco, Moretania, Djabuti, Yemen, Algeria "which has oil but a lot" and many other Arab countries that are poor and drought.
The OPEC organization comprise of collective countries and few of them are Arabs. You got Canada, Argentina, Venenzuella, Neigeria, Brazil, and other Asian countries that produce oil. So there is not answer to who owns oil in the Middle East!