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Date: 2014-06-27 14:13:32Petroleum production Drilling rig Oil well Drilling fluid Natural gas prices Extraction of petroleum Blowout Natural gas Precision Drilling Petroleum Oilfield terminology Petroleum geology | SECURITIES AND EXCHANGE COMMISSION Washington, D.C[removed]FORM 10-K (Mark One)Add to Reading ListSource URL: www.unitcorp.comDownload Document from Source WebsiteFile Size: 264,83 KBShare Document on Facebook |