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View History:
Monthly
Annual
Download Data (XLS File)
U.S. Crude Oil Exploratory Wells Drilled (Number of Elements)
Year
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
1973
58
52
53
28
51
63
45
73
55
49
61
54
1974
56
54
70
61
77
88
80
81
63
85
65
79
1975
84
81
94
83
85
80
81
93
69
90
69
73
1976
92
100
90
79
84
90
84
105
92
78
104
88
1977
110
95
92
97
103
106
77
100
94
102
107
81
1978
81
93
88
106
115
110
99
95
95
103
96
90
1979
83
84
113
95
78
113
118
103
127
140
131
136
1980
140
137
143
137
130
141
137
163
169
148
149
183
1981
221
179
210
184
225
223
236
235
222
236
226
254
1982
248
184
267
228
182
213
171
202
184
202
176
179
1983
186
170
168
173
153
157
173
172
172
198
165
142
1984
214
195
215
150
197
188
184
184
210
150
180
142
1985
166
164
175
125
149
119
137
166
116
132
93
138
1986
203
142
113
108
77
68
81
58
45
52
61
76
1987
92
62
60
65
72
72
84
75
87
81
94
82
1988
88
74
67
92
53
79
71
66
74
81
54
56
1989
57
48
46
64
38
40
50
56
66
43
53
46
1990
45
38
53
62
46
57
60
78
55
68
51
51
1991
65
51
62
57
45
55
63
49
35
40
37
42
1992
50
36
35
48
40
44
49
45
41
44
38
28
1993
44
28
33
52
42
48
44
33
48
41
49
47
1994
53
27
37
52
54
56
43
48
46
47
58
58
1995
55
45
51
46
39
50
45
42
46
44
44
42
1996
55
46
43
32
47
37
40
46
35
47
35
33
1997
37
31
33
37
39
43
44
31
38
27
36
38
1998
48
27
37
30
19
30
24
15
23
15
12
6
1999
12
14
6
10
14
9
14
9
20
14
17
17
2000
19
20
25
20
25
29
25
25
32
26
20
22
2001
22
33
28
29
33
33
33
32
26
37
23
27
2002
15
17
25
27
26
28
23
17
18
14
25
22
2003
27
32
27
18
22
36
35
34
32
28
36
26
2004
27
25
30
36
37
29
31
33
38
41
30
29
2005
46
48
41
36
50
45
40
42
49
56
46
37
2006
66
52
44
45
62
78
38
62
59
61
63
40
2007
64
63
65
61
57
87
86
71
79
88
64
65
2008
91
86
74
71
98
64
74
75
64
95
104
69
2009
98
57
51
44
38
45
53
60
-
= 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
Referring Pages:
Crude Oil and Natural Gas Exploratory and Development Wells