from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun oil industry a method of closing an oil well, by drilling a relief well to the bottom of the borehole of the blown-out well, and pumping in heavy drilling fluid (synthetic mud) to counteract oil pressure and staunch the flow, then filling in the orifice to the oil reservoir with concrete (cement) sealing the blow-out and the relief wells


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