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U.S. Crude Oil Exploratory and Developmental Wells Drilled (Number of Elements)
U.S. Crude Oil Exploratory and Developmental Wells Drilled (Number of Elements)
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  1973 779 695 846 679 891 915 857 978 898 896 911 822
  1974 909 883 1,077 1,137 1,191 1,229 1,253 1,210 1,083 1,281 1,105 1,289
  1975 1,315 1,067 1,314 1,333 1,352 1,434 1,450 1,545 1,496 1,720 1,430 1,492
  1976 1,709 1,288 1,495 1,468 1,385 1,543 1,343 1,581 1,482 1,535 1,396 1,463
  1977 1,388 1,345 1,653 1,519 1,596 1,676 1,521 1,698 1,629 1,630 1,565 1,525
  1978 1,430 1,182 1,451 1,785 1,704 1,765 1,562 1,708 1,578 1,863 1,643 1,510
  1979 1,342 1,151 1,375 1,387 1,670 1,739 1,865 1,948 1,914 2,313 2,015 2,132
  1980 2,520 2,187 2,378 2,441 2,580 2,825 2,943 3,004 2,978 3,221 2,884 2,998
  1981 3,840 3,042 3,549 3,483 3,652 3,758 3,840 3,929 3,791 3,630 3,530 3,843
  1982 3,945 3,098 3,895 3,614 3,266 3,029 3,132 3,298 2,960 3,059 2,991 3,138
  1983 3,549 2,619 2,942 2,619 2,727 2,971 3,162 3,493 3,322 3,433 3,394 3,117
  1984 3,466 3,357 3,387 3,186 3,629 3,815 3,858 3,835 3,573 3,626 3,643 3,531
  1985 3,195 2,733 3,182 2,968 2,852 2,951 3,057 3,245 2,818 3,021 2,505 2,734
  1986 3,386 2,448 2,386 1,869 1,304 1,133 1,069 1,052 1,056 1,170 1,160 1,180
  1987 1,286 1,171 1,066 1,063 1,218 1,283 1,467 1,562 1,506 1,620 1,538 1,430
  1988 1,358 1,285 1,277 1,257 1,307 1,296 1,112 1,144 988 995 816 811
  1989 826 578 698 884 880 820 871 982 850 921 958 962
  1990 1,029 869 914 870 887 946 998 1,120 1,071 1,286 1,259 1,196
  1991 1,251 1,170 1,176 1,137 1,058 938 962 1,005 868 943 764 763
  1992 782 613 746 730 699 702 764 733 810 856 750 834
  1993 692 629 693 651 670 722 777 804 769 828 779 750
  1994 665 534 576 555 511 550 501 636 619 651 600 603
  1995 599 579 643 600 706 695 705 719 649 674 601 657
  1996 626 652 638 676 781 665 764 817 722 850 796 773
  1997 742 778 811 858 935 983 943 925 921 900 845 804
  1998 819 714 744 675 610 638 605 544 523 428 373 306
  1999 265 260 223 262 312 333 380 377 406 485 541 470
  2000 579 527 594 572 667 704 705 746 707 822 688 684
  2001 747 680 769 741 838 809 773 794 690 798 613 560
  2002 576 460 499 530 539 616 641 610 508 631 610 513
  2003 599 521 600 661 708 711 736 738 781 693 600 707
  2004 618 618 693 710 746 750 748 823 843 767 697 697
  2005 730 755 828 817 891 950 933 986 934 966 945 904
  2006 1,015 911 1,012 1,013 1,088 1,218 1,177 1,167 1,147 1,204 1,193 1,103
  2007 1,051 967 1,081 1,015 1,123 1,182 1,192 1,237 1,118 1,269 1,107 1,074
  2008 1,190 1,219 1,232 1,314 1,514 1,562 1,568 1,586 1,596 1,843 1,648 1,646
  2009 1,432 1,121 955 861 775 761 986 1,110

- = 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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