Oil majors like ExxonMobil and Shell Petroleum come up with little incremental reserve despite escalating spending for drilling and exploration.
The Shell Petroleum Development Co is the largest oil and gas company in Nigeria - Africa's top energy producer - with an output of more than one million barrels of oil or equivalent per day.
British Petroleum, Shell, Chevron, IBM, Intel, Microsoft and Wal-Mart are some supercaps that will do well in the months ahead.
Royal Dutch Petroleum (Shell).
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Though profits would most likely ripple throughout the industry, Chevron, Shell, BP and Anadarko Petroleum, which have some of the largest offshore operations in U.S. waters, are the most likely winners.
On Ruhrgas, Gazprom Export, GDF Suez, Qatar Petroleum, Royal Dutch Shell and Statoil - would like to see coal's share of the energy mix fall from 24% currently to between 4% and 9% by 2030.
Its top competitors are Chevron (CVX), British Petroleum (BP), and Royal Dutch Shell (RDS.A).
Given the extent to which sand, tar or murderous thugs get in the way of petroleum production, it's no surprise that Shell's engineers see salvation in natural gas.
Royal Dutch Shell, Europe's largest oil company, and Qatar Petroleum have partnered in new Qatar-based projects that will ramp up natural gas production more than 1 million barrels per day by 2030.
Other companies that have underperformed the group of 20 include BP, Anadarko Petroleum, Hess, Statoil, and Royal Dutch Shell, among others.
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Shell's first quarter results were also boosted by proceeds from asset sales, which included sales in its pipeline business in the United States, its liquefied petroleum gas (LPG) venture in Vietnam and the majority of Shell's shareholding in its downstream business in Uganda.
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While Shell was once seen as a model of good management, some investors have in recent years criticised its complicated two-company structure: Royal Dutch Petroleum, based in the Netherlands, owns 60% of the group and London-based Shell Transport and Trading the remaining 40%, with operational management reporting to both boards.
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