, , , (, ) . , . , : 1947 .; 1947 1971 .; 1971 1986 .; 1986 . .
. 1. WTI, ./.
(. . 1). , , . "" (Exxon, Mobil, Galf, Texaco, Standard Oil of California - , British Petroleum - , Royal-Dutch/Shell - -; , , Compani Franzes du Petrol). , 13 ( , , , , , - ; , , , - ; , - ; - - ).
1986 . - - , . , . 1986 ., , , , , , ( ) .
1971 . , 70-80- ( - Upstream) , , ( - Downstream) - , -. . 7 ( 8 -. ) , 13 , - .
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