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View History:
Monthly
Annual
Download Data (XLS File)
U.S. Dry Exploratory and Developmental Wells Drilled (Number of Elements)
Year
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
1973
868
747
811
658
809
821
895
1,022
861
948
906
974
1974
867
796
895
955
1,028
947
1,115
1,061
1,074
1,149
1,098
1,131
1975
1,139
861
1,028
1,033
1,043
1,081
1,149
1,194
1,260
1,374
1,237
1,247
1976
1,316
1,045
1,170
1,129
1,064
1,123
1,075
1,102
1,154
1,238
1,164
1,178
1977
1,089
997
1,208
1,147
1,246
1,200
1,248
1,337
1,322
1,426
1,386
1,379
1978
1,346
1,031
1,274
1,304
1,342
1,408
1,405
1,522
1,491
1,570
1,446
1,412
1979
1,227
997
1,192
1,102
1,250
1,278
1,280
1,514
1,450
1,668
1,558
1,583
1980
1,604
1,334
1,389
1,458
1,637
1,753
1,807
1,966
1,941
2,001
1,919
1,976
1981
2,305
1,833
2,102
2,091
2,257
2,343
2,427
2,596
2,467
2,575
2,419
2,538
1982
2,655
2,095
2,341
2,225
2,013
2,058
2,208
2,255
2,110
2,155
2,070
2,175
1983
2,251
1,812
1,953
1,624
1,803
1,958
2,042
2,194
2,112
2,323
2,243
2,028
1984
2,339
1,866
1,845
1,732
2,009
2,452
2,370
2,614
2,185
2,180
2,137
2,155
1985
2,044
1,555
1,892
1,860
1,729
1,733
1,904
1,964
1,726
1,728
1,370
1,706
1986
1,815
1,311
1,384
1,116
949
834
929
894
826
857
871
1,013
1987
895
706
779
849
852
844
964
998
1,066
1,175
983
1,056
1988
897
756
805
819
894
866
873
895
849
938
740
787
1989
656
466
607
680
649
680
689
731
752
830
757
739
1990
696
551
582
622
629
692
750
785
729
862
836
762
1991
609
660
669
669
622
668
742
673
614
709
636
611
1992
513
435
520
501
577
493
552
582
557
558
509
487
1993
449
449
446
526
559
549
675
561
623
573
563
540
1994
449
337
418
420
416
481
471
553
481
509
483
497
1995
420
424
374
396
426
469
476
471
485
477
449
452
1996
475
374
404
404
474
452
494
530
476
564
494
446
1997
454
449
411
472
463
511
515
542
547
574
517
500
1998
420
455
387
394
488
460
419
395
328
391
335
333
1999
275
216
186
220
261
299
287
346
349
354
360
351
2000
323
295
313
336
357
331
351
452
300
349
320
319
2001
366
323
308
366
408
401
411
431
359
413
347
299
2002
302
260
272
286
311
299
309
348
296
329
289
309
2003
296
240
247
312
295
296
336
348
327
383
307
301
2004
289
206
305
286
297
272
273
317
306
316
309
298
2005
294
247
321
334
389
396
350
433
317
336
343
303
2006
313
308
478
494
478
491
498
516
514
502
495
494
2007
494
499
506
508
508
512
514
526
520
517
532
535
2008
514
521
532
543
556
569
575
Release Date: 9/2/2008
Next Release Date: 10/2/2008
Referring Pages:
Crude Oil and Natural Gas Exploratory and Development Wells
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