Atlantic Richfield's Arco Oil and Gas Cosaid it increased contract prices for crude oil by 50 cts a
barrel, effective today.
    Arco said the 50 cts increase brings its posted price for
West Texas Intermediate, the U.S. benchmark grade, to 19.00
dlrs a barrel.
    The price of West Texas Sour was increased to 18.10 dlrs.
Light Louisiana Sweet was raised to 19.35 dlrs.
    The price was last changed on September 30.
 Reuter
