And it's all very close: a matter of oil being $2 more a barrel than $30 and producing 200,000 barrels more than 500,000 barrels.
The average cost of producing a barrel of crude from reserves also fell.
The cost of producing a barrel of oil in Africa last year was $14.43.
That the average cost of producing a barrel of oil is circa $11/bbl.
DSI has gone from producing a barrel or so a week to producing 35,000 bottles a week.
Greater Sudan was producing 304,000 barrels a day in 2004, and 80,000 barrels of refined product.
By 2009 Salt Creek could be producing 35,000 barrels a day at an average cost of $3 per barrel.
The Government generally produces 210,000 barrels of oil a day, but earlier this year had been producing 240,000 barrels a day to increase its export earnings, a Western diplomat said.
In two decades of expansion, Chinese national oil companies went from producing zero barrels of oil and gas overseas annually to producing 2.5 million barrels.
By 1862, Pennsylvania was producing three million barrels per year.
