. "oil exploitation" . "oil extraction and production" . . . . "Oil and Gas" . . "production recovery" . "oil strike" . . "recovery" . "oil" . "cumulative production" . . . "oil output." . "Oil Production" . "oil recovery" . . "conventional oil and gas industry" . "oil-extraction" . "Extraction of petroleum" . "oil extraction" . "secondary recovery" . . "Extraction_of_petroleum#Recovery_rates" . "production of oil and natural gas" . "primary extraction" . "recovery rates" . "unearth oil" . "extraction of petroleum" . . . "Oil and gas extraction" . "gas extraction" . . "oil producer" . . . "production" . "petroleum and oil extraction" . "Oil extraction" . "Secondary recovery or waste disposal" . . . . "petroleum" . "production by pressure depletion" . "extraction" . . . "Oil production" . . "extraction from the reserve" . "petroleum extraction technologies" . "primary" . "oil production" . . "petroleum extraction" . "Production" . "recovery factor" . "Extraction of petroleum" . "natural oil extraction" . . "crude oil extraction" . . . "percentage of the OOIP" . "exploitation or production" . "tertiary recovery" . . "extraction of oil" . "petroleum production" . . . "oil and gas" . . . .