SHELL CANADA <SHC> RAISED CRUDE OIL POSTINGS Shell Canada, a wholly owned subsidiary of the Royal Dutch/Shell Group <RD> said that it raised crude oil prices by about 47 Canadian cts a barrel today. The increase riased its posted price for Light sweet crude oil to 21.95 dlrs a barrel from its march one level. Light sour crudes were raised to 19.95 dlrs a barrel, the company said.