Possible Clues:

• Texas tycoon, often
• J. Paul Getty, e.g.
• Might one have money invested in Gulf state?
• One left in Arab country may look after the wells there
• Owner of company that sinks wells for fuel
• Bush, once
• One whose success is well-earned?
• J. Paul Getty or J.R. Ewing
• J.R. Ewing was one
• Worker from Mongolia strangely denied leave