"Our 2011 Finding & Development (F&D) Cost Study examines year-end reserve data from the 100 largest domestic, public oil and gas companies that existed over the past five years. These aggregated data include over 332 trillion cubic feet (Tcf) of natural gas reserves, over 44 billion barrels of liquids reserves, average daily production of 68 billion cubic feet (Bcf) of gas (about 20% of global production) and 11.2 million barrels of liquids (about 12.5% of production), and cash flow in 2011 of $1.96 trillion (up 27% year-over-year and now larger than Russia's GDP, the ninth largest in the world).
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