Shell reports stable oil reserves

Another record profit for Exxon
Oil giant Exxon Mobil breaks its own record for the highest ever quarterly profit by a US company but its shares fall.

Oil prices boost Shell's results
High oil prices give another boost to profits from Royal Dutch Shell, making up for difficult conditions in its retailing arm.

Nigerian attack closes oilfield
Royal Dutch Shell halts production at its main offshore oil field in Nigeria, following a militant attack.

Exxon profit up 17% on oil surge
Oil giant Exxon Mobil makes $10.9bn profit in the first three months of 2008 - up 17% but less than some had expected.

Rising prices boost Shell and BP
Record oil prices help Royal Dutch Shell and BP to report strong profits for the first three months of 2008.