1 Renewal EAD: You should apply for an EAD renewal four months before your original EAD expires.  Replacement EAD: This document replaces a lost, stolen, or mutilated EAD. A replacement EAD also replaces an EAD that was issued with incorrect information, such as a misspelled name.
petroleum, rock oil (mid-14c. in Anglo-French), from Medieval Latin petroleum, from Latin: petra : rock + oleum : oil. ) is a naturally occurring, yellow-to-black liquid found in geological formations beneath the Earth 's surface, which is commonly refined into various types of fuels.
literally rock oil it is a general term for crude oil and natural gas primary source of automotive fuels and lubricant oils petroleum is a complex mixture of hydrocarbons and paraffins in some areas and aromatics and cyclo paraffins in other areasn most oil fields oil and natural gas occur together gas being the top layer on crude oil under which may lie water one barrel of petroleum equals 5604 cubic feet of natural gas 1 45 barrels of liquefied natural gas lng or about one barrel of gas oil