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 View History:    Monthly     Annual   
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U.S. Onshore Crude Oil and Natural Gas Rotary Rigs in Operation (Number of Elements)
U.S. Onshore Crude Oil and Natural Gas Rotary Rigs in Operation (Number of Elements)
Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9
  1940's NA
  1950's NA NA NA NA NA NA NA NA NA NA
  1960's NA NA NA NA NA NA NA NA NA NA
  1970's NA NA NA 1,110 1,378 1,554 1,529 1,834 2,074 1,970
  1980's 2,678 3,714 2,862 2,033 2,215 1,774 865 841 813 764
  1990's 902 779 669 672 673 622 671 821 703 519
  2000's 778 1,003 717 924 1,095 1,287 1,559 1,695 1,814

- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Release Date: 10/8/2009
Next Release Date: 11/6/2009

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