Full-year profits by this measure were $17.59 billion, or $18.54 billion on a historical-cost basis.
Analysts said both figures exceeded any profit ever recorded by a UK-listed company, which Tony Woodley, General Secretary of the Transport and General Workers Union, said argued for the introduction of a windfall tax to curb excessive profits in the oil sector.
Excluding one-off gains of $318 million, the fourth-quarter figure was in line with a Reuters poll of 12 analysts which forecast $4.826 billion.
News of the higher payouts to shareholders cheered investors but Shell's fifth reserves cut in just over a year weighed on the company's stock.
Despite the fall, analysts were pleased that Shell appeared to have adopted a more generous cash-distribution strategy.
It said it would pay dividends of at least $10 billion in 2005, up from $7.2 billion in 2004, and buy back shares worth $3 billion to $5 billion, compared with $1.7 billion in 2004.