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View History:
Monthly
Annual
Download Data (XLS File)
U.S. Natural Gas Exploratory Wells Drilled (Number of Elements)
Year
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
1973
60
61
69
82
96
85
112
93
103
110
94
102
1974
84
87
98
110
120
97
105
81
108
119
94
87
1975
96
81
91
95
113
104
128
133
94
113
109
91
1976
127
110
124
116
104
133
108
112
108
107
111
86
1977
81
99
137
127
117
154
130
147
139
136
150
131
1978
142
118
144
160
155
149
144
151
141
190
131
146
1979
131
120
164
149
153
177
151
156
159
214
162
171
1980
163
174
151
175
127
190
185
155
206
217
185
171
1981
211
179
191
215
225
209
206
236
238
210
191
211
1982
221
176
221
168
177
187
184
168
157
157
161
156
1983
155
148
146
126
146
125
126
133
129
135
111
123
1984
138
144
151
99
128
131
152
121
126
132
108
98
1985
129
118
105
110
114
110
88
90
69
83
88
96
1986
117
86
79
62
50
52
67
60
67
51
58
48
1987
69
65
60
63
59
54
53
80
58
76
62
57
1988
62
56
66
59
67
60
70
53
55
72
66
61
1989
67
52
53
52
47
51
57
67
64
62
66
68
1990
59
45
61
53
47
58
64
78
49
69
47
63
1991
48
57
39
46
41
47
38
45
39
48
43
53
1992
38
34
32
30
29
49
34
44
24
34
42
37
1993
41
51
33
35
47
44
39
45
45
66
54
41
1994
57
44
67
57
46
62
78
61
69
62
66
71
1995
66
62
59
34
44
40
41
46
57
37
51
46
1996
64
48
33
41
64
51
67
45
38
45
43
52
1997
59
31
41
47
42
34
46
33
54
44
61
51
1998
42
31
28
34
32
45
47
49
56
52
50
44
1999
42
29
31
27
36
25
38
47
57
64
57
66
2000
49
57
60
41
45
49
45
55
68
65
60
63
2001
80
75
59
77
87
109
104
106
93
108
88
60
2002
83
87
71
45
65
62
55
76
71
95
70
63
2003
48
41
58
69
67
71
103
86
118
114
103
113
2004
104
139
121
120
124
132
170
122
163
160
149
149
2005
118
152
189
153
221
194
155
193
148
179
190
196
2006
170
176
193
165
210
217
202
260
210
225
252
219
2007
236
211
276
260
293
259
297
282
273
334
310
275
2008
278
291
238
241
243
249
254
260
261
-
= 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 Exploratory and Development Wells