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Energy Glossary
View History:
Monthly
Annual
Download Data (XLS File)
U.S. Crude Oil 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
1970's
NA
NA
NA
NA
NA
NA
NA
1980's
NA
NA
NA
NA
NA
NA
NA
NA
554
453
1990's
532
482
373
373
335
323
306
376
264
128
2000's
197
217
137
157
165
194
274
297
-
= No Data Reported;
--
= Not Applicable;
NA
= Not Available;
W
= Withheld to avoid disclosure of individual company data.
Release Date: 10/31/2008
Next Release Date: 11/28/2008
Referring Pages:
Crude Oil and Natural Gas Drilling Activity