Ranker provides a list of the largest and most profitable oil and gas drilling companies. As of 2015, the Bronco Drilling Company and China National Offshore Oil rank first and second on the list. More »

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Patterson-UTI Drilling Company, Inc., offers land-based drilling services for oil and natural gas companies. The company operates in the United States and western Canada and works with independent and major energy compan... More »

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Websites that specialize in the oil and gas industry, such as Rigzone.com, are a good place to start when on the lookout for oil drilling companies that are hiring. Rigzone is a leading website that feature news, job pos... More »

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Patterson-UTI Drilling Company, Inc., offers land-based drilling services for oil and natural gas companies. The company operates in the United States and western Canada and works with independent and major energy compan... More »

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There are over 14,000 oil and gas companies operating in the United States, most of which are small businesses. Some of the more well-known producers include Exxon Mobil, BP and Conoco Phillips. The 40 largest producers ... More »

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Some oil and gas pipeline companies are Kinder Morgan, Inc., Energy Transfer Equity L.P. and Tesoro Logistics L.P., states the Dividend and Yahoo Finance websites. Many oil and gas pipeline companies operate as Master Li... More »

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Some offshore drilling companies are Diamond Offshore, Pacific Drilling, Transocean and Rowan Companies. As of 2014, all are public companies with stock trading on the New York Stock Exchange. More »

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