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U.S. Average Depth of Dry Exploratory and Developmental Wells Drilled (Feet per Well)
U.S. Average Depth of Dry Exploratory and Developmental Wells Drilled (Feet per Well)
Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9
  1940's 3,473
  1950's 3,445 3,706 3,983 4,004 4,004 4,161 4,079 4,126 4,110 4,275
  1960's 4,248 4,311 4,524 4,552 4,598 4,723 4,573 4,616 5,053 5,195
  1970's 5,265 5,305 5,377 5,403 5,191 5,073 5,014 5,120 5,183 5,071
  1980's 4,791 4,827 4,691 4,320 4,631 4,733 4,763 4,799 5,190 5,112
  1990's 5,198 5,114 5,063 5,116 5,493 5,511 5,614 5,749 6,037 5,823
  2000's 5,732 5,651 5,628 5,685 5,978 5,704 NA

- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Release Date: 10/2/2008
Next Release Date: 11/3/2008

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