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Montana 2006
 
Distribution of Wells by Production Rate Bracket
 

  Oil Wells   Gas Wells
Prod.
Rate
Bracket
(BOE/Day)		 |
|
|
|		 # of
Oil
Wells		 % of
Oil
Wells		 Annual
Oil
Prod.
(Mbbl)		 % of
Oil
Prod.		 Oil
Rate
per Well
(bbl/Day)		 Annual
Gas
Prod.
(MMcf)		 Gas
Rate
per Well
(Mcf/Day)		 |
|
|
|		 # of
Gas
Wells		 % of
Gas
Wells		 Annual
Gas
Prod.
(MMcf)		 % of
Gas
Prod.		 Gas
Rate
per Well
(Mcf/Day)		 Annual
Oil
Prod.
(Mbbl)		 Oil
Rate
per Well
(bbl/Day)
0 - 1 | 1,106 26.3 170.5 0.5 0.4 3.8 0.0 | 1,155 18.6 1,092.3 1.2 3.0 0.3 0.0
1 - 2 | 498 11.9 244.4 0.7 1.4 24.6 0.1 | 972 15.7 3,074.9 3.3 8.9 1.0 0.0
2 - 4 | 388 9.2 382.3 1.1 2.8 49.0 0.4 | 1,280 20.6 7,949.4 8.5 17.5 3.9 0.0
4 - 6 | 213 5.1 356.7 1.0 4.7 74.3 1.0 | 684 11.0 6,943.7 7.4 29.3 0.8 0.0
6 - 8 | 217 5.2 504.6 1.4 6.6 107.2 1.4 | 354 5.7 5,088.6 5.4 41.5 0.4 0.0
8 - 10 | 141 3.4 431.6 1.2 8.6 111.9 2.2 | 264 4.3 4,721.7 5.0 53.6 5.5 0.1
Subtotal <=10 | 2,563 61.0 2,090.2 5.8 2.3 370.8 0.4 | 4,709 75.9 28,870.5 30.7 17.9 11.9 0.0
10 - 12 | 122 2.9 450.0 1.2 10.4 163.9 3.8 | 226 3.6 5,113.1 5.4 65.7 1.8 0.0
12 - 15 | 131 3.1 602.5 1.7 12.6 265.0 5.6 | 283 4.6 7,718.4 8.2 80.2 4.4 0.0
Subtotal <=15 | 2,816 67.1 3,142.7 8.7 3.2 799.6 0.8 | 5,218 84.1 41,702.1 44.4 23.4 18.1 0.0
15 - 20 | 209 5.0 1,237.3 3.4 16.4 481.7 6.4 | 373 6.0 12,827.6 13.6 103.5 3.1 0.0
20 - 25 | 146 3.5 1,087.4 3.0 21.0 437.5 8.5 | 223 3.6 9,762.3 10.4 133.5 6.4 0.1
25 - 30 | 105 2.5 959.8 2.6 25.6 433.5 11.6 | 136 2.2 6,451.0 6.9 163.6 3.2 0.1
30 - 40 | 156 3.7 1,727.4 4.8 31.4 970.9 17.7 | 127 2.0 7,837.5 8.3 205.8 0.3 0.0
40 - 50 | 100 2.4 1,407.2 3.9 41.0 790.2 23.0 | 47 0.8 3,911.3 4.2 261.3 8.7 0.6
50 - 100 | 265 6.3 5,824.8 16.1 64.4 3,878.2 42.9 | 60 1.0 6,979.8 7.4 393.2 16.6 0.9
100 - 200 | 271 6.5 11,281.0 31.1 130.2 6,926.1 79.9 | 20 0.3 3,746.5 4.0 783.0 0.0 0.0
200 - 400 | 124 3.0 8,837.6 24.4 236.5 4,907.5 131.3 | 3 0.0 781.6 0.8 1,826.2 0.0 0.0
400 - 800 | 6 0.1 458.2 1.3 406.2 261.0 231.4 | 0 0.0 0.0 0.0 0.0 0.0 0.0
800 - 1600 | 1 0.0 292.7 0.8 801.9 269.6 738.7 | 0 0.0 0.0 0.0 0.0 0.0 0.0
1600 - 3200 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
3200 - 6400 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
6400 - 12800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
> 12800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
Total | 4,199 100.0 36,256.2 100.0 24.8 20,155.7 13.8 | 6,207 100.0 93,999.7 100.0 44.8 56.5 0.0
 
Notes:
1) State Government agencies and commercial sources provided base data.
2) The Reserves and Production Division, Office of Oil and Gas, EIA has reviewed and edited inaccurate production data.
3) To be consistent between states a GOR of 6,000 (cf/bbl) for each years production was used to classify wells.
     If the GOR was less than 6,000 (cf/bbl) the well was classed an oil well, greater than or equal 6,000 (cf/bbl) were gas wells.
4) To determine production rate brackets for the first and last year of a wells life the annual production was divided
     by the number of days in the productive months. For other years the annual production was divided by 365 or 366 days.
5) Gas volumes have been converted from the various state pressure bases to the Federal base (14.73 psia).
 
                                                                                                                            29APR08

 


Montana 2005
 
Distribution of Wells by Production Rate Bracket
 

  Oil Wells   Gas Wells
Prod.
Rate
Bracket
(BOE/Day)		 |
|
|
|		 # of
Oil
Wells		 % of
Oil
Wells		 Annual
Oil
Prod.
(Mbbl)		 % of
Oil
Prod.		 Oil
Rate
per Well
(bbl/Day)		 Annual
Gas
Prod.
(MMcf)		 Gas
Rate
per Well
(Mcf/Day)		 |
|
|
|		 # of
Gas
Wells		 % of
Gas
Wells		 Annual
Gas
Prod.
(MMcf)		 % of
Gas
Prod.		 Gas
Rate
per Well
(Mcf/Day)		 Annual
Oil
Prod.
(Mbbl)		 Oil
Rate
per Well
(bbl/Day)
0 - 1 | 1,097 27.4 180.5 0.5 0.5 3.8 0.0 | 890 15.6 902.9 1.0 3.0 0.5 0.0
1 - 2 | 477 11.9 239.9 0.7 1.4 34.1 0.2 | 882 15.5 2,751.5 3.0 8.8 1.7 0.0
2 - 4 | 371 9.3 365.7 1.1 2.9 37.5 0.3 | 1,189 20.9 7,388.9 8.0 17.6 2.1 0.0
4 - 6 | 238 5.9 401.1 1.2 4.7 82.6 1.0 | 753 13.2 7,635.1 8.3 29.1 0.5 0.0
6 - 8 | 169 4.2 394.2 1.2 6.7 99.3 1.7 | 336 5.9 4,920.4 5.3 41.7 0.9 0.0
8 - 10 | 147 3.7 445.6 1.3 8.6 114.7 2.2 | 224 3.9 4,031.2 4.4 53.1 5.7 0.1
Subtotal <=10 | 2,499 62.3 2,027.0 6.1 2.3 372.1 0.4 | 4,274 75.2 27,629.9 30.0 18.5 11.6 0.0
10 - 12 | 115 2.9 412.5 1.2 10.3 165.0 4.1 | 204 3.6 4,547.0 4.9 66.0 0.9 0.0
12 - 15 | 137 3.4 627.9 1.9 12.6 248.5 5.0 | 234 4.1 6,299.3 6.8 80.7 0.0 0.0
Subtotal <=15 | 2,751 68.6 3,067.5 9.3 3.2 785.5 0.8 | 4,712 82.9 38,476.2 41.7 23.5 12.5 0.0
15 - 20 | 209 5.2 1,178.2 3.6 16.2 474.9 6.5 | 311 5.5 10,939.3 11.9 104.5 2.7 0.0
20 - 25 | 143 3.6 1,082.6 3.3 21.1 469.4 9.1 | 214 3.8 9,018.7 9.8 134.4 0.0 0.0
25 - 30 | 114 2.8 1,032.1 3.1 25.4 489.2 12.0 | 142 2.5 7,302.3 7.9 163.8 0.0 0.0
30 - 40 | 147 3.7 1,655.2 5.0 32.2 766.7 14.9 | 147 2.6 8,523.9 9.2 204.6 5.9 0.1
40 - 50 | 98 2.4 1,409.8 4.3 41.0 728.9 21.2 | 70 1.2 5,592.3 6.1 269.8 0.0 0.0
50 - 100 | 211 5.3 4,456.6 13.5 64.7 2,431.8 35.3 | 71 1.2 8,200.0 8.9 398.0 6.5 0.3
100 - 200 | 184 4.6 7,608.5 23.0 134.8 4,188.7 74.2 | 18 0.3 3,323.0 3.6 752.8 0.0 0.0
200 - 400 | 132 3.3 9,312.3 28.2 246.1 5,446.0 143.9 | 2 0.0 809.3 0.9 1,899.7 0.0 0.0
400 - 800 | 17 0.4 1,909.5 5.8 461.1 798.4 192.8 | 0 0.0 0.0 0.0 0.0 0.0 0.0
800 - 1600 | 3 0.1 366.6 1.1 998.9 147.7 402.5 | 0 0.0 0.0 0.0 0.0 0.0 0.0
1600 - 3200 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
3200 - 6400 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
6400 - 12800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
> 12800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
Total | 4,009 100.0 33,078.9 100.0 23.8 16,727.3 12.1 | 5,687 100.0 92,184.9 100.0 47.5 27.6 0.0
 
Notes:
1) State Government agencies and commercial sources provided base data.
2) The Reserves and Production Division, Office of Oil and Gas, EIA has reviewed and edited inaccurate production data.
3) To be consistent between states a GOR of 6,000 (cf/bbl) for each years production was used to classify wells.
     If the GOR was less than 6,000 (cf/bbl) the well was classed an oil well, greater than or equal 6,000 (cf/bbl) were gas wells.
4) To determine production rate brackets for the first and last year of a wells life the annual production was divided
     by the number of days in the productive months. For other years the annual production was divided by 365 or 366 days.
5) Gas volumes have been converted from the various state pressure bases to the Federal base (14.73 psia).
 
                                                                                                                            29APR08

 


Montana 2004
 
Distribution of Wells by Production Rate Bracket
 

  Oil Wells   Gas Wells
Prod.
Rate
Bracket
(BOE/Day)		 |
|
|
|		 # of
Oil
Wells		 % of
Oil
Wells		 Annual
Oil
Prod.
(Mbbl)		 % of
Oil
Prod.		 Oil
Rate
per Well
(bbl/Day)		 Annual
Gas
Prod.
(MMcf)		 Gas
Rate
per Well
(Mcf/Day)		 |
|
|
|		 # of
Gas
Wells		 % of
Gas
Wells		 Annual
Gas
Prod.
(MMcf)		 % of
Gas
Prod.		 Gas
Rate
per Well
(Mcf/Day)		 Annual
Oil
Prod.
(Mbbl)		 Oil
Rate
per Well
(bbl/Day)
0 - 1 | 1,061 28.2 174.2 0.7 0.5 3.6 0.0 | 813 15.2 831.9 0.9 3.0 0.2 0.0
1 - 2 | 457 12.1 231.0 0.9 1.4 13.2 0.1 | 805 15.1 2,546.5 2.9 8.9 1.4 0.0
2 - 4 | 370 9.8 375.6 1.5 2.8 47.2 0.4 | 1,142 21.4 7,076.5 8.1 17.5 2.5 0.0
4 - 6 | 211 5.6 369.9 1.5 4.8 75.3 1.0 | 731 13.7 7,542.0 8.6 29.1 1.7 0.0
6 - 8 | 166 4.4 408.9 1.6 6.8 76.4 1.3 | 365 6.8 5,176.6 5.9 41.5 0.0 0.0
8 - 10 | 139 3.7 423.7 1.7 8.5 138.8 2.8 | 198 3.7 3,460.6 3.9 53.7 3.3 0.1
Subtotal <=10 | 2,404 63.8 1,983.5 8.0 2.3 354.4 0.4 | 4,054 75.8 26,634.2 30.4 18.7 9.1 0.0
10 - 12 | 103 2.7 383.2 1.5 10.2 162.1 4.3 | 159 3.0 3,443.3 3.9 65.8 1.5 0.0
12 - 15 | 144 3.8 649.4 2.6 12.5 279.5 5.4 | 206 3.9 5,482.9 6.3 80.3 2.8 0.0
Subtotal <=15 | 2,651 70.4 3,016.1 12.2 3.2 796.0 0.8 | 4,419 82.7 35,560.4 40.6 23.1 13.4 0.0
15 - 20 | 200 5.3 1,181.5 4.8 16.5 374.6 5.2 | 265 5.0 9,093.5 10.4 104.1 0.0 0.0
20 - 25 | 143 3.8 1,078.4 4.3 21.1 432.7 8.5 | 194 3.6 8,207.1 9.4 133.0 0.0 0.0
25 - 30 | 117 3.1 1,074.4 4.3 25.8 407.9 9.8 | 132 2.5 6,466.9 7.4 163.0 0.0 0.0
30 - 40 | 142 3.8 1,602.2 6.5 32.0 752.0 15.0 | 171 3.2 9,207.6 10.5 206.3 1.2 0.0
40 - 50 | 102 2.7 1,466.8 5.9 41.5 725.8 20.6 | 56 1.0 3,706.6 4.2 264.1 0.2 0.0
50 - 100 | 203 5.4 4,436.2 17.9 64.4 1,957.0 28.4 | 85 1.6 9,787.6 11.2 405.1 0.1 0.0
100 - 200 | 105 2.8 4,139.9 16.7 134.1 1,901.6 61.6 | 20 0.4 4,309.6 4.9 797.6 0.6 0.1
200 - 400 | 90 2.4 5,755.2 23.2 243.8 2,623.6 111.1 | 3 0.1 1,303.5 1.5 1,643.8 0.0 0.0
400 - 800 | 14 0.4 1,068.9 4.3 411.9 575.6 221.8 | 0 0.0 0.0 0.0 0.0 0.0 0.0
800 - 1600 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
1600 - 3200 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
3200 - 6400 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
6400 - 12800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
> 12800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
Total | 3,767 100.0 24,819.5 100.0 18.6 10,546.7 7.9 | 5,345 100.0 87,642.8 100.0 48.2 15.4 0.0
 
Notes:
1) State Government agencies and commercial sources provided base data.
2) The Reserves and Production Division, Office of Oil and Gas, EIA has reviewed and edited inaccurate production data.
3) To be consistent between states a GOR of 6,000 (cf/bbl) for each years production was used to classify wells.
     If the GOR was less than 6,000 (cf/bbl) the well was classed an oil well, greater than or equal 6,000 (cf/bbl) were gas wells.
4) To determine production rate brackets for the first and last year of a wells life the annual production was divided
     by the number of days in the productive months. For other years the annual production was divided by 365 or 366 days.
5) Gas volumes have been converted from the various state pressure bases to the Federal base (14.73 psia).
 
                                                                                                                            29APR08

 


Montana 2003
 
Distribution of Wells by Production Rate Bracket
 

  Oil Wells   Gas Wells
Prod.
Rate
Bracket
(BOE/Day)		 |
|
|
|		 # of
Oil
Wells		 % of
Oil
Wells		 Annual
Oil
Prod.
(Mbbl)		 % of
Oil
Prod.		 Oil
Rate
per Well
(bbl/Day)		 Annual
Gas
Prod.
(MMcf)		 Gas
Rate
per Well
(Mcf/Day)		 |
|
|
|		 # of
Gas
Wells		 % of
Gas
Wells		 Annual
Gas
Prod.
(MMcf)		 % of
Gas
Prod.		 Gas
Rate
per Well
(Mcf/Day)		 Annual
Oil
Prod.
(Mbbl)		 Oil
Rate
per Well
(bbl/Day)
0 - 1 | 1,028 28.3 171.2 0.9 0.5 3.7 0.0 | 750 15.1 777.4 1.0 3.0 0.2 0.0
1 - 2 | 467 12.8 239.7 1.2 1.4 13.7 0.1 | 742 15.0 2,340.7 3.0 8.8 1.7 0.0
2 - 4 | 362 10.0 355.4 1.8 2.8 43.9 0.3 | 1,088 22.0 6,755.2 8.6 17.4 4.0 0.0
4 - 6 | 199 5.5 342.0 1.8 4.8 68.9 1.0 | 702 14.2 7,266.1 9.2 28.9 1.4 0.0
6 - 8 | 161 4.4 384.6 2.0 6.7 70.1 1.2 | 364 7.3 5,328.6 6.8 41.3 5.2 0.0
8 - 10 | 131 3.6 401.0 2.1 8.5 128.3 2.7 | 207 4.2 3,907.2 5.0 54.2 1.3 0.0
Subtotal <=10 | 2,348 64.6 1,893.9 9.8 2.3 328.6 0.4 | 3,853 77.8 26,375.2 33.5 19.4 14.0 0.0
10 - 12 | 113 3.1 419.5 2.2 10.4 161.5 4.0 | 128 2.6 2,792.7 3.6 65.3 3.9 0.1
12 - 15 | 158 4.3 717.8 3.7 12.6 285.7 5.0 | 195 3.9 5,095.9 6.5 79.7 2.0 0.0
Subtotal <=15 | 2,619 72.0 3,031.3 15.6 3.3 775.8 0.8 | 4,176 84.3 34,263.8 43.6 23.4 19.8 0.0
15 - 20 | 200 5.5 1,148.4 5.9 16.4 381.1 5.5 | 225 4.5 7,150.4 9.1 103.9 0.0 0.0
20 - 25 | 126 3.5 933.5 4.8 20.7 396.7 8.8 | 172 3.5 6,764.8 8.6 134.9 0.0 0.0
25 - 30 | 118 3.2 1,075.9 5.5 25.6 450.4 10.7 | 117 2.4 5,320.8 6.8 163.6 0.3 0.0
30 - 40 | 149 4.1 1,663.9 8.6 31.8 855.6 16.4 | 120 2.4 6,918.4 8.8 207.4 0.5 0.0
40 - 50 | 90 2.5 1,321.3 6.8 41.6 692.6 21.8 | 50 1.0 4,236.0 5.4 268.7 0.2 0.0
50 - 100 | 217 6.0 4,747.2 24.5 62.9 2,102.3 27.9 | 69 1.4 7,705.8 9.8 403.0 0.4 0.0
100 - 200 | 65 1.8 2,520.0 13.0 131.2 976.4 50.8 | 21 0.4 4,640.8 5.9 845.9 0.0 0.0
200 - 400 | 45 1.2 2,549.3 13.1 228.0 1,307.9 117.0 | 3 0.1 1,630.5 2.1 1,489.0 0.0 0.0
400 - 800 | 7 0.2 409.1 2.1 394.5 282.3 272.2 | 0 0.0 0.0 0.0 0.0 0.0 0.0
800 - 1600 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
1600 - 3200 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
3200 - 6400 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
6400 - 12800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
> 12800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
Total | 3,636 100.0 19,399.8 100.0 15.2 8,221.0 6.4 | 4,953 100.0 78,631.3 100.0 46.4 21.3 0.0
 
Notes:
1) State Government agencies and commercial sources provided base data.
2) The Reserves and Production Division, Office of Oil and Gas, EIA has reviewed and edited inaccurate production data.
3) To be consistent between states a GOR of 6,000 (cf/bbl) for each years production was used to classify wells.
     If the GOR was less than 6,000 (cf/bbl) the well was classed an oil well, greater than or equal 6,000 (cf/bbl) were gas wells.
4) To determine production rate brackets for the first and last year of a wells life the annual production was divided
     by the number of days in the productive months. For other years the annual production was divided by 365 or 366 days.
5) Gas volumes have been converted from the various state pressure bases to the Federal base (14.73 psia).
 
                                                                                                                            29APR08

 


Montana 2002
 
Distribution of Wells by Production Rate Bracket
 

  Oil Wells   Gas Wells
Prod.
Rate
Bracket
(BOE/Day)		 |
|
|
|		 # of
Oil
Wells		 % of
Oil
Wells		 Annual
Oil
Prod.
(Mbbl)		 % of
Oil
Prod.		 Oil
Rate
per Well
(bbl/Day)		 Annual
Gas
Prod.
(MMcf)		 Gas
Rate
per Well
(Mcf/Day)		 |
|
|
|		 # of
Gas
Wells		 % of
Gas
Wells		 Annual
Gas
Prod.
(MMcf)		 % of
Gas
Prod.		 Gas
Rate
per Well
(Mcf/Day)		 Annual
Oil
Prod.
(Mbbl)		 Oil
Rate
per Well
(bbl/Day)
0 - 1 | 998 27.9 170.3 1.0 0.5 4.2 0.0 | 697 14.1 742.6 0.9 3.0 0.1 0.0
1 - 2 | 497 13.9 248.5 1.5 1.4 10.9 0.1 | 664 13.4 2,132.5 2.7 8.9 1.3 0.0
2 - 4 | 338 9.4 325.9 1.9 2.8 38.3 0.3 | 1,030 20.8 6,281.1 7.9 17.4 1.4 0.0
4 - 6 | 219 6.1 360.9 2.1 4.7 83.1 1.1 | 878 17.7 7,300.1 9.2 29.3 2.7 0.0
6 - 8 | 154 4.3 371.2 2.2 6.8 67.9 1.2 | 411 8.3 5,392.8 6.8 41.2 1.3 0.0
8 - 10 | 138 3.9 421.3 2.5 8.5 146.0 3.0 | 222 4.5 3,914.1 4.9 53.7 0.1 0.0
Subtotal <=10 | 2,344 65.4 1,898.1 11.2 2.3 350.4 0.4 | 3,902 78.9 25,763.1 32.4 19.9 6.8 0.0
10 - 12 | 112 3.1 414.5 2.4 10.2 185.1 4.5 | 131 2.6 2,821.3 3.6 65.0 0.2 0.0
12 - 15 | 164 4.6 750.9 4.4 12.8 266.7 4.5 | 189 3.8 4,885.4 6.2 79.2 10.3 0.2
Subtotal <=15 | 2,620 73.1 3,063.5 18.0 3.3 802.2 0.9 | 4,222 85.3 33,469.7 42.1 23.9 17.4 0.0
15 - 20 | 193 5.4 1,123.2 6.6 16.2 421.2 6.1 | 243 4.9 7,898.4 9.9 103.2 1.7 0.0
20 - 25 | 147 4.1 1,112.4 6.6 20.8 402.0 7.5 | 137 2.8 5,439.1 6.8 132.5 0.0 0.0
25 - 30 | 117 3.3 1,106.4 6.5 26.0 423.3 9.9 | 102 2.1 4,668.2 5.9 163.7 0.0 0.0
30 - 40 | 144 4.0 1,653.2 9.7 32.0 827.4 16.0 | 102 2.1 5,683.6 7.2 203.2 0.2 0.0
40 - 50 | 97 2.7 1,420.1 8.4 41.5 791.3 23.1 | 43 0.9 2,894.2 3.6 266.3 0.7 0.1
50 - 100 | 188 5.2 4,202.4 24.8 64.1 1,967.6 30.0 | 61 1.2 8,387.0 10.6 421.4 0.0 0.0
100 - 200 | 63 1.8 2,433.6 14.3 125.9 1,109.0 57.4 | 31 0.6 7,956.0 10.0 799.4 0.7 0.1
200 - 400 | 12 0.3 771.4 4.5 226.3 453.2 132.9 | 7 0.1 3,034.4 3.8 1,633.2 0.0 0.0
400 - 800 | 1 0.0 86.2 0.5 402.6 134.9 630.4 | 0 0.0 0.0 0.0 0.0 0.0 0.0
800 - 1600 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
1600 - 3200 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
3200 - 6400 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
6400 - 12800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
> 12800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
Total | 3,582 100.0 16,972.4 100.0 13.4 7,332.2 5.8 | 4,948 100.0 79,430.6 100.0 49.0 20.6 0.0
 
Notes:
1) State Government agencies and commercial sources provided base data.
2) The Reserves and Production Division, Office of Oil and Gas, EIA has reviewed and edited inaccurate production data.
3) To be consistent between states a GOR of 6,000 (cf/bbl) for each years production was used to classify wells.
     If the GOR was less than 6,000 (cf/bbl) the well was classed an oil well, greater than or equal 6,000 (cf/bbl) were gas wells.
4) To determine production rate brackets for the first and last year of a wells life the annual production was divided
     by the number of days in the productive months. For other years the annual production was divided by 365 or 366 days.
5) Gas volumes have been converted from the various state pressure bases to the Federal base (14.73 psia).
 
                                                                                                                            29APR08

 


Montana 2001
 
Distribution of Wells by Production Rate Bracket
 

  Oil Wells   Gas Wells
Prod.
Rate
Bracket
(BOE/Day)		 |
|
|
|		 # of
Oil
Wells		 % of
Oil
Wells		 Annual
Oil
Prod.
(Mbbl)		 % of
Oil
Prod.		 Oil
Rate
per Well
(bbl/Day)		 Annual
Gas
Prod.
(MMcf)		 Gas
Rate
per Well
(Mcf/Day)		 |
|
|
|		 # of
Gas
Wells		 % of
Gas
Wells		 Annual
Gas
Prod.
(MMcf)		 % of
Gas
Prod.		 Gas
Rate
per Well
(Mcf/Day)		 Annual
Oil
Prod.
(Mbbl)		 Oil
Rate
per Well
(bbl/Day)
0 - 1 | 1,034 28.2 181.7 1.1 0.5 3.0 0.0 | 682 14.7 679.6 0.9 3.0 0.9 0.0
1 - 2 | 474 12.9 237.9 1.5 1.4 10.9 0.1 | 686 14.7 2,014.2 2.7 8.9 0.3 0.0
2 - 4 | 367 10.0 354.6 2.2 2.7 36.2 0.3 | 1,070 23.0 5,994.8 8.0 17.5 2.0 0.0
4 - 6 | 230 6.3 385.3 2.4 4.8 59.2 0.7 | 762 16.4 7,328.1 9.7 29.5 3.6 0.0
6 - 8 | 166 4.5 386.4 2.4 6.7 94.0 1.6 | 338 7.3 4,626.9 6.1 41.4 1.5 0.0
8 - 10 | 119 3.2 374.6 2.3 8.7 89.5 2.1 | 206 4.4 3,680.3 4.9 52.8 1.2 0.0
Subtotal <=10 | 2,390 65.2 1,920.4 11.8 2.3 292.8 0.3 | 3,744 80.4 24,323.9 32.3 19.9 9.5 0.0
10 - 12 | 119 3.2 434.2 2.7 10.3 181.7 4.3 | 137 2.9 3,006.1 4.0 65.1 1.9 0.0
12 - 15 | 173 4.7 757.0 4.7 12.6 284.0 4.7 | 176 3.8 4,504.0 6.0 80.2 3.1 0.1
Subtotal <=15 | 2,682 73.2 3,111.7 19.1 3.3 758.5 0.8 | 4,057 87.2 31,834.0 42.3 24.0 14.5 0.0
15 - 20 | 216 5.9 1,226.2 7.5 16.4 422.0 5.7 | 210 4.5 7,146.8 9.5 103.7 5.0 0.1
20 - 25 | 148 4.0 1,096.7 6.7 21.1 409.3 7.9 | 110 2.4 5,036.8 6.7 134.4 2.0 0.1
25 - 30 | 106 2.9 954.6 5.9 25.7 366.6 9.9 | 67 1.4 3,815.0 5.1 165.0 0.0 0.0
30 - 40 | 136 3.7 1,533.2 9.4 32.4 634.2 13.4 | 82 1.8 5,734.3 7.6 204.0 0.0 0.0
40 - 50 | 110 3.0 1,591.4 9.8 41.4 735.0 19.1 | 31 0.7 2,757.3 3.7 269.7 0.8 0.1
50 - 100 | 195 5.3 4,077.7 25.1 61.9 1,850.4 28.1 | 61 1.3 7,433.5 9.9 421.1 0.0 0.0
100 - 200 | 54 1.5 1,790.2 11.0 122.2 1,053.6 71.9 | 23 0.5 6,013.0 8.0 877.4 0.0 0.0
200 - 400 | 16 0.4 886.3 5.4 223.8 387.7 97.9 | 11 0.2 4,010.2 5.3 1,514.4 0.0 0.0
400 - 800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 2 0.0 1,544.8 2.1 2,668.0 0.0 0.0
800 - 1600 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
1600 - 3200 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
3200 - 6400 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
6400 - 12800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
> 12800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
Total | 3,663 100.0 16,268.0 100.0 12.7 6,617.3 5.2 | 4,654 100.0 75,325.8 100.0 49.5 22.3 0.0
 
Notes:
1) State Government agencies and commercial sources provided base data.
2) The Reserves and Production Division, Office of Oil and Gas, EIA has reviewed and edited inaccurate production data.
3) To be consistent between states a GOR of 6,000 (cf/bbl) for each years production was used to classify wells.
     If the GOR was less than 6,000 (cf/bbl) the well was classed an oil well, greater than or equal 6,000 (cf/bbl) were gas wells.
4) To determine production rate brackets for the first and last year of a wells life the annual production was divided
     by the number of days in the productive months. For other years the annual production was divided by 365 or 366 days.
5) Gas volumes have been converted from the various state pressure bases to the Federal base (14.73 psia).
 
                                                                                                                            29APR08

 


Montana 2000
 
Distribution of Wells by Production Rate Bracket
 

  Oil Wells   Gas Wells
Prod.
Rate
Bracket
(BOE/Day)		 |
|
|
|		 # of
Oil
Wells		 % of
Oil
Wells		 Annual
Oil
Prod.
(Mbbl)		 % of
Oil
Prod.		 Oil
Rate
per Well
(bbl/Day)		 Annual
Gas
Prod.
(MMcf)		 Gas
Rate
per Well
(Mcf/Day)		 |
|
|
|		 # of
Gas
Wells		 % of
Gas
Wells		 Annual
Gas
Prod.
(MMcf)		 % of
Gas
Prod.		 Gas
Rate
per Well
(Mcf/Day)		 Annual
Oil
Prod.
(Mbbl)		 Oil
Rate
per Well
(bbl/Day)
0 - 1 | 1,049 28.3 185.5 1.2 0.5 1.8 0.0 | 627 14.8 654.3 1.0 3.1 0.0 0.0
1 - 2 | 525 14.2 263.2 1.7 1.4 14.8 0.1 | 681 16.0 2,095.7 3.2 8.9 1.8 0.0
2 - 4 | 384 10.4 375.9 2.4 2.8 38.3 0.3 | 1,058 24.9 6,542.7 10.1 17.7 1.7 0.0
4 - 6 | 214 5.8 353.0 2.2 4.7 65.8 0.9 | 590 13.9 6,002.1 9.2 29.4 2.5 0.0
6 - 8 | 159 4.3 373.8 2.4 6.7 99.0 1.8 | 283 6.7 4,001.7 6.2 41.4 0.0 0.0
8 - 10 | 105 2.8 316.5 2.0 8.6 106.9 2.9 | 210 4.9 3,792.9 5.8 52.7 3.2 0.0
Subtotal <=10 | 2,436 65.7 1,867.9 11.9 2.2 326.7 0.4 | 3,449 81.2 23,089.3 35.5 19.4 9.3 0.0
10 - 12 | 131 3.5 478.0 3.0 10.5 153.3 3.4 | 111 2.6 2,397.0 3.7 66.2 0.6 0.0
12 - 15 | 165 4.4 742.7 4.7 12.8 266.3 4.6 | 133 3.1 3,631.1 5.6 79.7 2.4 0.1
Subtotal <=15 | 2,732 73.7 3,088.7 19.6 3.2 746.2 0.8 | 3,693 86.9 29,117.3 44.8 22.9 12.3 0.0
15 - 20 | 205 5.5 1,167.9 7.4 16.2 441.8 6.1 | 177 4.2 5,856.6 9.0 103.5 8.9 0.2
20 - 25 | 146 3.9 1,048.8 6.7 20.9 433.3 8.6 | 136 3.2 5,613.3 8.6 133.1 0.0 0.0
25 - 30 | 135 3.6 1,195.6 7.6 25.7 465.6 10.0 | 62 1.5 3,168.3 4.9 165.1 2.4 0.1
30 - 40 | 152 4.1 1,680.5 10.7 32.1 795.4 15.2 | 79 1.9 5,567.4 8.6 207.4 0.0 0.0
40 - 50 | 99 2.7 1,433.9 9.1 41.3 729.9 21.0 | 34 0.8 2,911.9 4.5 266.6 0.6 0.1
50 - 100 | 182 4.9 3,814.3 24.2 64.7 1,568.5 26.6 | 44 1.0 5,464.9 8.4 393.7 0.0 0.0
100 - 200 | 47 1.3 1,645.6 10.5 127.3 848.7 65.6 | 19 0.4 4,321.0 6.6 842.8 0.0 0.0
200 - 400 | 10 0.3 602.2 3.8 219.3 413.7 150.7 | 6 0.1 2,970.7 4.6 1,836.0 0.0 0.0
400 - 800 | 1 0.0 61.3 0.4 400.4 32.4 212.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
800 - 1600 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
1600 - 3200 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
3200 - 6400 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
6400 - 12800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
> 12800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
Total | 3,709 100.0 15,738.7 100.0 12.2 6,475.6 5.0 | 4,250 100.0 64,991.4 100.0 44.8 24.1 0.0
 
Notes:
1) State Government agencies and commercial sources provided base data.
2) The Reserves and Production Division, Office of Oil and Gas, EIA has reviewed and edited inaccurate production data.
3) To be consistent between states a GOR of 6,000 (cf/bbl) for each years production was used to classify wells.
     If the GOR was less than 6,000 (cf/bbl) the well was classed an oil well, greater than or equal 6,000 (cf/bbl) were gas wells.
4) To determine production rate brackets for the first and last year of a wells life the annual production was divided
     by the number of days in the productive months. For other years the annual production was divided by 365 or 366 days.
5) Gas volumes have been converted from the various state pressure bases to the Federal base (14.73 psia).
 
                                                                                                                            29APR08

 


Montana 1999
 
Distribution of Wells by Production Rate Bracket
 

  Oil Wells   Gas Wells
Prod.
Rate
Bracket
(BOE/Day)		 |
|
|
|		 # of
Oil
Wells		 % of
Oil
Wells		 Annual
Oil
Prod.
(Mbbl)		 % of
Oil
Prod.		 Oil
Rate
per Well
(bbl/Day)		 Annual
Gas
Prod.
(MMcf)		 Gas
Rate
per Well
(Mcf/Day)		 |
|
|
|		 # of
Gas
Wells		 % of
Gas
Wells		 Annual
Gas
Prod.
(MMcf)		 % of
Gas
Prod.		 Gas
Rate
per Well
(Mcf/Day)		 Annual
Oil
Prod.
(Mbbl)		 Oil
Rate
per Well
(bbl/Day)
0 - 1 | 1,071 29.7 178.6 1.2 0.5 3.7 0.0 | 536 13.8 507.3 0.9 2.8 0.1 0.0
1 - 2 | 488 13.6 238.6 1.6 1.4 12.8 0.1 | 558 14.4 1,727.2 3.1 8.8 1.6 0.0
2 - 4 | 372 10.3 368.5 2.4 2.8 38.6 0.3 | 982 25.4 6,278.2 11.2 18.0 2.1 0.0
4 - 6 | 189 5.2 309.3 2.0 4.8 73.0 1.1 | 592 15.3 6,167.7 11.1 29.3 3.7 0.0
6 - 8 | 146 4.1 339.5 2.2 6.7 97.8 1.9 | 338 8.7 5,021.0 9.0 41.9 0.9 0.0
8 - 10 | 115 3.2 347.4 2.3 8.6 94.3 2.3 | 152 3.9 2,785.2 5.0 53.3 2.1 0.0
Subtotal <=10 | 2,381 66.1 1,781.8 11.6 2.1 320.1 0.4 | 3,158 81.5 22,486.7 40.3 20.3 10.5 0.0
10 - 12 | 113 3.1 406.7 2.7 10.4 140.2 3.6 | 103 2.7 2,242.0 4.0 65.6 1.1 0.0
12 - 15 | 159 4.4 712.7 4.7 12.8 232.9 4.2 | 121 3.1 2,964.1 5.3 79.1 6.3 0.2
Subtotal <=15 | 2,653 73.7 2,901.2 18.9 3.1 693.3 0.7 | 3,382 87.3 27,692.8 49.6 23.5 18.0 0.0
15 - 20 | 197 5.5 1,109.5 7.2 16.3 426.5 6.3 | 150 3.9 4,493.6 8.1 103.9 3.1 0.1
20 - 25 | 163 4.5 1,174.0 7.7 21.1 435.8 7.8 | 99 2.6 4,057.2 7.3 133.2 0.0 0.0
25 - 30 | 102 2.8 910.9 5.9 25.9 328.7 9.3 | 57 1.5 2,586.0 4.6 163.4 2.4 0.2
30 - 40 | 140 3.9 1,597.8 10.4 32.5 701.0 14.2 | 76 2.0 4,722.0 8.5 207.8 6.6 0.3
40 - 50 | 102 2.8 1,439.9 9.4 41.2 675.5 19.3 | 38 1.0 3,102.6 5.6 262.8 0.0 0.0
50 - 100 | 192 5.3 4,062.3 26.5 63.6 1,850.4 29.0 | 57 1.5 6,947.8 12.4 404.0 0.9 0.1
100 - 200 | 47 1.3 1,806.5 11.8 117.6 981.3 63.9 | 11 0.3 1,570.3 2.8 715.1 0.0 0.0
200 - 400 | 5 0.1 318.1 2.1 232.0 208.6 152.2 | 3 0.1 641.2 1.1 1,501.6 0.0 0.0
400 - 800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
800 - 1600 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
1600 - 3200 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
3200 - 6400 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
6400 - 12800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
> 12800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
Total | 3,601 100.0 15,320.1 100.0 12.2 6,301.1 5.0 | 3,873 100.0 55,813.6 100.0 42.2 30.9 0.0
 
Notes:
1) State Government agencies and commercial sources provided base data.
2) The Reserves and Production Division, Office of Oil and Gas, EIA has reviewed and edited inaccurate production data.
3) To be consistent between states a GOR of 6,000 (cf/bbl) for each years production was used to classify wells.
     If the GOR was less than 6,000 (cf/bbl) the well was classed an oil well, greater than or equal 6,000 (cf/bbl) were gas wells.
4) To determine production rate brackets for the first and last year of a wells life the annual production was divided
     by the number of days in the productive months. For other years the annual production was divided by 365 or 366 days.
5) Gas volumes have been converted from the various state pressure bases to the Federal base (14.73 psia).
 
                                                                                                                            29APR08

 


Montana 1998
 
Distribution of Wells by Production Rate Bracket
 

  Oil Wells   Gas Wells
Prod.
Rate
Bracket
(BOE/Day)		 |
|
|
|		 # of
Oil
Wells		 % of
Oil
Wells		 Annual
Oil
Prod.
(Mbbl)		 % of
Oil
Prod.		 Oil
Rate
per Well
(bbl/Day)		 Annual
Gas
Prod.
(MMcf)		 Gas
Rate
per Well
(Mcf/Day)		 |
|
|
|		 # of
Gas
Wells		 % of
Gas
Wells		 Annual
Gas
Prod.
(MMcf)		 % of
Gas
Prod.		 Gas
Rate
per Well
(Mcf/Day)		 Annual
Oil
Prod.
(Mbbl)		 Oil
Rate
per Well
(bbl/Day)
0 - 1 | 1,065 29.0 176.1 1.1 0.5 4.7 0.0 | 502 14.0 522.0 1.0 3.0 0.1 0.0
1 - 2 | 494 13.4 244.9 1.5 1.4 15.4 0.1 | 504 14.1 1,580.2 3.0 8.8 0.4 0.0
2 - 4 | 414 11.3 403.6 2.4 2.8 50.6 0.3 | 892 24.9 5,703.8 10.7 17.9 2.8 0.0
4 - 6 | 205 5.6 346.3 2.1 4.8 66.7 0.9 | 608 17.0 6,380.2 12.0 29.4 2.6 0.0
6 - 8 | 139 3.8 334.3 2.0 6.7 64.5 1.3 | 319 8.9 4,778.7 9.0 41.6 0.7 0.0
8 - 10 | 115 3.1 354.1 2.1 8.6 80.4 2.0 | 186 5.2 3,521.3 6.6 53.2 2.0 0.0
Subtotal <=10 | 2,432 66.2 1,859.3 11.2 2.2 282.4 0.3 | 3,011 84.1 22,486.2 42.3 21.0 8.6 0.0
10 - 12 | 119 3.2 437.4 2.6 10.4 161.8 3.8 | 91 2.5 2,080.9 3.9 65.2 0.4 0.0
12 - 15 | 161 4.4 725.3 4.4 12.7 258.0 4.5 | 89 2.5 2,482.8 4.7 80.3 4.0 0.1
Subtotal <=15 | 2,712 73.8 3,021.9 18.2 3.2 702.2 0.7 | 3,191 89.1 27,049.8 50.9 23.9 12.9 0.0
15 - 20 | 228 6.2 1,318.1 7.9 16.5 480.2 6.0 | 96 2.7 3,177.9 6.0 104.0 0.3 0.0
20 - 25 | 136 3.7 1,029.0 6.2 21.2 348.5 7.2 | 83 2.3 3,337.7 6.3 132.3 3.0 0.1
25 - 30 | 119 3.2 1,111.7 6.7 26.0 437.1 10.2 | 52 1.5 2,651.6 5.0 163.5 0.0 0.0
30 - 40 | 132 3.6 1,561.4 9.4 32.7 655.3 13.7 | 63 1.8 3,604.2 6.8 206.0 11.6 0.7
40 - 50 | 100 2.7 1,443.4 8.7 41.1 672.2 19.1 | 32 0.9 2,597.9 4.9 265.2 0.7 0.1
50 - 100 | 168 4.6 3,612.2 21.7 62.8 1,539.7 26.8 | 49 1.4 6,504.9 12.2 427.5 0.0 0.0
100 - 200 | 61 1.7 2,353.4 14.2 121.9 1,075.3 55.7 | 14 0.4 3,089.9 5.8 710.2 0.0 0.0
200 - 400 | 19 0.5 1,166.0 7.0 227.6 604.4 118.0 | 2 0.1 1,112.0 2.1 1,828.9 0.9 1.4
400 - 800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
800 - 1600 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
1600 - 3200 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
3200 - 6400 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
6400 - 12800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
> 12800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
Total | 3,675 100.0 16,617.1 100.0 12.8 6,514.9 5.0 | 3,582 100.0 53,126.0 100.0 42.4 29.4 0.0
 
Notes:
1) State Government agencies and commercial sources provided base data.
2) The Reserves and Production Division, Office of Oil and Gas, EIA has reviewed and edited inaccurate production data.
3) To be consistent between states a GOR of 6,000 (cf/bbl) for each years production was used to classify wells.
     If the GOR was less than 6,000 (cf/bbl) the well was classed an oil well, greater than or equal 6,000 (cf/bbl) were gas wells.
4) To determine production rate brackets for the first and last year of a wells life the annual production was divided
     by the number of days in the productive months. For other years the annual production was divided by 365 or 366 days.
5) Gas volumes have been converted from the various state pressure bases to the Federal base (14.73 psia).
 
                                                                                                                            29APR08

 


Montana 1997
 
Distribution of Wells by Production Rate Bracket
 

  Oil Wells   Gas Wells
Prod.
Rate
Bracket
(BOE/Day)		 |
|
|
|		 # of
Oil
Wells		 % of
Oil
Wells		 Annual
Oil
Prod.
(Mbbl)		 % of
Oil
Prod.		 Oil
Rate
per Well
(bbl/Day)		 Annual
Gas
Prod.
(MMcf)		 Gas
Rate
per Well
(Mcf/Day)		 |
|
|
|		 # of
Gas
Wells		 % of
Gas
Wells		 Annual
Gas
Prod.
(MMcf)		 % of
Gas
Prod.		 Gas
Rate
per Well
(Mcf/Day)		 Annual
Oil
Prod.
(Mbbl)		 Oil
Rate
per Well
(bbl/Day)
0 - 1 | 1,085 29.1 191.0 1.2 0.5 5.6 0.0 | 460 13.1 471.5 1.0 3.0 0.2 0.0
1 - 2 | 511 13.7 255.8 1.6 1.4 17.4 0.1 | 484 13.8 1,531.1 3.1 8.9 1.3 0.0
2 - 4 | 389 10.4 383.0 2.4 2.8 34.9 0.3 | 850 24.2 5,421.2 11.0 18.1 3.8 0.0
4 - 6 | 221 5.9 375.9 2.3 4.8 66.5 0.9 | 591 16.8 6,207.2 12.6 29.9 3.0 0.0
6 - 8 | 156 4.2 363.3 2.3 6.6 85.2 1.5 | 376 10.7 5,116.9 10.3 41.1 0.9 0.0
8 - 10 | 104 2.8 314.6 2.0 8.6 64.2 1.8 | 157 4.5 2,631.3 5.3 53.3 2.7 0.1
Subtotal <=10 | 2,466 66.2 1,883.7 11.7 2.2 273.8 0.3 | 2,918 83.1 21,379.2 43.2 21.2 12.0 0.0
10 - 12 | 106 2.8 385.7 2.4 10.5 121.5 3.3 | 126 3.6 2,459.6 5.0 65.5 2.8 0.1
12 - 15 | 148 4.0 677.6 4.2 12.8 224.5 4.2 | 116 3.3 2,697.7 5.5 80.1 1.0 0.0
Subtotal <=15 | 2,720 73.0 2,947.0 18.3 3.1 619.8 0.6 | 3,160 90.0 26,536.5 53.7 24.5 15.9 0.0
15 - 20 | 238 6.4 1,379.1 8.6 16.4 537.3 6.4 | 88 2.5 2,755.4 5.6 103.6 1.6 0.1
20 - 25 | 168 4.5 1,228.5 7.6 20.9 503.5 8.6 | 61 1.7 2,556.0 5.2 134.6 3.7 0.2
25 - 30 | 115 3.1 1,050.0 6.5 25.9 363.7 9.0 | 56 1.6 2,780.9 5.6 162.7 3.1 0.2
30 - 40 | 149 4.0 1,716.5 10.6 32.6 758.3 14.4 | 52 1.5 3,266.5 6.6 202.6 7.9 0.5
40 - 50 | 86 2.3 1,264.1 7.8 41.7 570.9 18.8 | 32 0.9 2,456.1 5.0 264.6 4.4 0.5
50 - 100 | 179 4.8 3,738.1 23.2 62.6 1,597.6 26.8 | 47 1.3 6,208.9 12.6 419.9 0.0 0.0
100 - 200 | 61 1.6 2,258.3 14.0 123.2 1,053.3 57.5 | 12 0.3 2,468.0 5.0 794.9 0.0 0.0
200 - 400 | 11 0.3 539.5 3.3 232.9 351.3 151.6 | 2 0.1 415.0 0.8 1,693.7 0.9 3.8
400 - 800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
800 - 1600 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
1600 - 3200 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
3200 - 6400 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
6400 - 12800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
> 12800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
Total | 3,727 100.0 16,121.2 100.0 12.3 6,355.6 4.9 | 3,510 100.0 49,443.4 100.0 41.6 37.4 0.0
 
Notes:
1) State Government agencies and commercial sources provided base data.
2) The Reserves and Production Division, Office of Oil and Gas, EIA has reviewed and edited inaccurate production data.
3) To be consistent between states a GOR of 6,000 (cf/bbl) for each years production was used to classify wells.
     If the GOR was less than 6,000 (cf/bbl) the well was classed an oil well, greater than or equal 6,000 (cf/bbl) were gas wells.
4) To determine production rate brackets for the first and last year of a wells life the annual production was divided
     by the number of days in the productive months. For other years the annual production was divided by 365 or 366 days.
5) Gas volumes have been converted from the various state pressure bases to the Federal base (14.73 psia).
 
                                                                                                                            29APR08

 


Montana 1996
 
Distribution of Wells by Production Rate Bracket
 

  Oil Wells   Gas Wells
Prod.
Rate
Bracket
(BOE/Day)		 |
|
|
|		 # of
Oil
Wells		 % of
Oil
Wells		 Annual
Oil
Prod.
(Mbbl)		 % of
Oil
Prod.		 Oil
Rate
per Well
(bbl/Day)		 Annual
Gas
Prod.
(MMcf)		 Gas
Rate
per Well
(Mcf/Day)		 |
|
|
|		 # of
Gas
Wells		 % of
Gas
Wells		 Annual
Gas
Prod.
(MMcf)		 % of
Gas
Prod.		 Gas
Rate
per Well
(Mcf/Day)		 Annual
Oil
Prod.
(Mbbl)		 Oil
Rate
per Well
(bbl/Day)
0 - 1 | 1,142 30.7 196.3 1.2 0.5 5.3 0.0 | 497 15.2 518.2 1.1 2.9 0.1 0.0
1 - 2 | 511 13.8 257.5 1.6 1.4 17.0 0.1 | 519 15.9 1,649.4 3.6 8.9 1.7 0.0
2 - 4 | 341 9.2 337.6 2.1 2.8 44.2 0.4 | 802 24.5 5,191.3 11.4 18.0 0.8 0.0
4 - 6 | 224 6.0 385.7 2.4 4.8 47.7 0.6 | 605 18.5 6,501.6 14.3 29.8 2.4 0.0
6 - 8 | 132 3.6 306.3 1.9 6.7 73.8 1.6 | 277 8.5 4,126.1 9.0 41.2 0.7 0.0
8 - 10 | 121 3.3 370.2 2.3 8.6 90.7 2.1 | 119 3.6 2,261.5 5.0 53.0 1.8 0.0
Subtotal <=10 | 2,471 66.5 1,853.5 11.5 2.1 278.7 0.3 | 2,819 86.3 20,248.0 44.4 20.1 7.6 0.0
10 - 12 | 106 2.9 390.7 2.4 10.4 109.1 2.9 | 82 2.5 1,856.0 4.1 65.4 1.9 0.1
12 - 15 | 144 3.9 653.5 4.0 12.8 220.1 4.3 | 71 2.2 1,934.1 4.2 79.2 2.0 0.1
Subtotal <=15 | 2,721 73.2 2,897.8 18.0 3.0 607.9 0.6 | 2,972 90.9 24,038.1 52.7 22.6 11.5 0.0
15 - 20 | 214 5.8 1,229.9 7.6 16.2 503.2 6.6 | 77 2.4 2,740.8 6.0 102.7 0.3 0.0
20 - 25 | 179 4.8 1,339.4 8.3 20.9 617.6 9.6 | 46 1.4 2,063.0 4.5 134.5 0.0 0.0
25 - 30 | 115 3.1 1,056.4 6.5 25.8 413.7 10.1 | 52 1.6 2,982.0 6.5 161.3 3.5 0.2
30 - 40 | 156 4.2 1,785.5 11.1 32.4 742.7 13.5 | 49 1.5 3,389.8 7.4 198.8 0.7 0.0
40 - 50 | 94 2.5 1,424.5 8.8 42.0 585.7 17.3 | 19 0.6 1,543.6 3.4 259.5 9.6 1.6
50 - 100 | 176 4.7 3,931.5 24.4 65.3 1,510.6 25.1 | 43 1.3 6,133.9 13.4 407.1 8.2 0.5
100 - 200 | 50 1.3 1,866.8 11.6 125.1 759.9 50.9 | 10 0.3 2,723.2 6.0 811.7 0.0 0.0
200 - 400 | 10 0.3 611.7 3.8 225.1 363.6 133.8 | 0 0.0 0.0 0.0 0.0 0.0 0.0
400 - 800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
800 - 1600 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
1600 - 3200 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
3200 - 6400 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
6400 - 12800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
> 12800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
Total | 3,715 100.0 16,143.5 100.0 12.3 6,105.0 4.7 | 3,268 100.0 45,614.5 100.0 39.2 33.7 0.0
 
Notes:
1) State Government agencies and commercial sources provided base data.
2) The Reserves and Production Division, Office of Oil and Gas, EIA has reviewed and edited inaccurate production data.
3) To be consistent between states a GOR of 6,000 (cf/bbl) for each years production was used to classify wells.
     If the GOR was less than 6,000 (cf/bbl) the well was classed an oil well, greater than or equal 6,000 (cf/bbl) were gas wells.
4) To determine production rate brackets for the first and last year of a wells life the annual production was divided
     by the number of days in the productive months. For other years the annual production was divided by 365 or 366 days.
5) Gas volumes have been converted from the various state pressure bases to the Federal base (14.73 psia).
 
                                                                                                                            29APR08

 


Montana 1995
 
Distribution of Wells by Production Rate Bracket
 

  Oil Wells   Gas Wells
Prod.
Rate
Bracket
(BOE/Day)		 |
|
|
|		 # of
Oil
Wells		 % of
Oil
Wells		 Annual
Oil
Prod.
(Mbbl)		 % of
Oil
Prod.		 Oil
Rate
per Well
(bbl/Day)		 Annual
Gas
Prod.
(MMcf)		 Gas
Rate
per Well
(Mcf/Day)		 |
|
|
|		 # of
Gas
Wells		 % of
Gas
Wells		 Annual
Gas
Prod.
(MMcf)		 % of
Gas
Prod.		 Gas
Rate
per Well
(Mcf/Day)		 Annual
Oil
Prod.
(Mbbl)		 Oil
Rate
per Well
(bbl/Day)
0 - 1 | 1,084 28.7 179.4 1.1 0.5 4.2 0.0 | 466 14.4 515.2 1.1 3.1 0.1 0.0
1 - 2 | 593 15.7 284.5 1.7 1.4 14.6 0.1 | 509 15.8 1,612.0 3.6 8.9 2.1 0.0
2 - 4 | 398 10.5 387.8 2.4 2.7 48.8 0.3 | 823 25.5 5,312.5 11.8 18.0 1.4 0.0
4 - 6 | 194 5.1 320.3 1.9 4.7 68.0 1.0 | 589 18.3 6,354.3 14.1 29.9 0.6 0.0
6 - 8 | 141 3.7 332.5 2.0 6.8 54.3 1.1 | 273 8.5 3,945.3 8.8 41.6 1.9 0.0
8 - 10 | 120 3.2 359.3 2.2 8.7 91.0 2.2 | 122 3.8 2,309.6 5.1 53.0 2.2 0.1
Subtotal <=10 | 2,530 67.0 1,863.8 11.3 2.1 280.9 0.3 | 2,782 86.2 20,048.9 44.6 20.2 8.3 0.0
10 - 12 | 103 2.7 382.0 2.3 10.6 92.6 2.6 | 83 2.6 1,892.9 4.2 64.5 4.5 0.2
12 - 15 | 141 3.7 640.9 3.9 12.8 221.9 4.4 | 75 2.3 2,094.9 4.7 79.5 1.5 0.1
Subtotal <=15 | 2,774 73.5 2,886.7 17.5 3.0 595.4 0.6 | 2,940 91.1 24,036.7 53.4 22.9 14.3 0.0
15 - 20 | 197 5.2 1,137.9 6.9 16.3 419.0 6.0 | 76 2.4 2,712.7 6.0 103.1 2.5 0.1
20 - 25 | 160 4.2 1,182.3 7.2 20.8 534.2 9.4 | 54 1.7 2,572.5 5.7 132.6 3.0 0.2
25 - 30 | 152 4.0 1,406.6 8.5 25.8 514.3 9.4 | 35 1.1 1,960.3 4.4 163.1 0.1 0.0
30 - 40 | 154 4.1 1,805.2 11.0 33.0 627.2 11.5 | 42 1.3 2,837.9 6.3 205.5 5.8 0.4
40 - 50 | 109 2.9 1,619.8 9.8 41.7 679.9 17.5 | 22 0.7 1,543.1 3.4 257.4 8.1 1.3
50 - 100 | 162 4.3 3,512.5 21.3 63.3 1,271.0 22.9 | 42 1.3 5,525.6 12.3 400.1 17.8 1.3
100 - 200 | 57 1.5 2,195.7 13.3 124.3 846.3 47.9 | 13 0.4 3,100.0 6.9 749.3 0.0 0.0
200 - 400 | 9 0.2 720.8 4.4 236.9 340.2 111.8 | 1 0.0 514.3 1.1 1,409.0 0.0 0.0
400 - 800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 1 0.0 176.2 0.4 2,888.5 0.0 0.0
800 - 1600 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
1600 - 3200 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
3200 - 6400 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
6400 - 12800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
> 12800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
Total | 3,774 100.0 16,467.5 100.0 12.4 5,827.5 4.4 | 3,226 100.0 44,979.5 100.0 39.3 51.6 0.0
 
Notes:
1) State Government agencies and commercial sources provided base data.
2) The Reserves and Production Division, Office of Oil and Gas, EIA has reviewed and edited inaccurate production data.
3) To be consistent between states a GOR of 6,000 (cf/bbl) for each years production was used to classify wells.
     If the GOR was less than 6,000 (cf/bbl) the well was classed an oil well, greater than or equal 6,000 (cf/bbl) were gas wells.
4) To determine production rate brackets for the first and last year of a wells life the annual production was divided
     by the number of days in the productive months. For other years the annual production was divided by 365 or 366 days.
5) Gas volumes have been converted from the various state pressure bases to the Federal base (14.73 psia).
 
                                                                                                                            29APR08

 


Montana 1994
 
Distribution of Wells by Production Rate Bracket
 

  Oil Wells   Gas Wells
Prod.
Rate
Bracket
(BOE/Day)		 |
|
|
|		 # of
Oil
Wells		 % of
Oil
Wells		 Annual
Oil
Prod.
(Mbbl)		 % of
Oil
Prod.		 Oil
Rate
per Well
(bbl/Day)		 Annual
Gas
Prod.
(MMcf)		 Gas
Rate
per Well
(Mcf/Day)		 |
|
|
|		 # of
Gas
Wells		 % of
Gas
Wells		 Annual
Gas
Prod.
(MMcf)		 % of
Gas
Prod.		 Gas
Rate
per Well
(Mcf/Day)		 Annual
Oil
Prod.
(Mbbl)		 Oil
Rate
per Well
(bbl/Day)
0 - 1 | 1,241 30.7 194.4 1.2 0.5 6.1 0.0 | 427 13.4 468.4 1.0 3.1 0.1 0.0
1 - 2 | 616 15.2 303.5 1.8 1.4 17.5 0.1 | 475 14.9 1,539.7 3.4 9.0 2.0 0.0
2 - 4 | 439 10.9 426.8 2.6 2.8 59.7 0.4 | 784 24.5 5,052.4 11.0 18.0 1.5 0.0
4 - 6 | 218 5.4 364.9 2.2 4.8 60.6 0.8 | 615 19.2 6,375.2 13.9 29.1 2.6 0.0
6 - 8 | 159 3.9 384.2 2.3 6.8 69.9 1.2 | 270 8.4 3,823.4 8.3 40.8 2.4 0.0
8 - 10 | 126 3.1 377.9 2.3 8.6 87.3 2.0 | 193 6.0 3,720.2 8.1 54.1 0.1 0.0
Subtotal <=10 | 2,799 69.2 2,051.7 12.4 2.1 301.0 0.3 | 2,764 86.5 20,979.2 45.7 21.3 8.8 0.0
10 - 12 | 85 2.1 308.3 1.9 10.4 104.9 3.6 | 78 2.4 1,742.0 3.8 66.0 2.3 0.1
12 - 15 | 143 3.5 653.3 4.0 12.8 210.9 4.1 | 74 2.3 2,030.8 4.4 79.3 3.6 0.1
Subtotal <=15 | 3,027 74.9 3,013.3 18.3 2.9 616.8 0.6 | 2,916 91.2 24,752.0 53.9 23.9 14.7 0.0
15 - 20 | 199 4.9 1,171.6 7.1 16.4 403.9 5.7 | 82 2.6 2,706.9 5.9 104.2 2.8 0.1
20 - 25 | 159 3.9 1,176.2 7.1 20.7 586.6 10.3 | 52 1.6 2,359.3 5.1 132.1 3.7 0.2
25 - 30 | 138 3.4 1,243.3 7.5 25.5 519.0 10.6 | 33 1.0 1,831.0 4.0 166.7 0.1 0.0
30 - 40 | 163 4.0 1,890.9 11.5 32.6 734.5 12.7 | 36 1.1 2,499.5 5.4 204.4 0.6 0.0
40 - 50 | 113 2.8 1,683.1 10.2 41.8 709.4 17.6 | 16 0.5 1,404.9 3.1 251.0 12.0 2.1
50 - 100 | 185 4.6 3,905.2 23.7 62.0 1,451.4 23.0 | 44 1.4 6,158.5 13.4 412.3 32.2 2.2
100 - 200 | 49 1.2 1,933.4 11.7 124.3 756.6 48.6 | 17 0.5 4,203.9 9.2 803.3 18.1 3.5
200 - 400 | 9 0.2 471.7 2.9 238.3 238.7 120.6 | 0 0.0 0.0 0.0 0.0 0.0 0.0
400 - 800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
800 - 1600 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
1600 - 3200 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
3200 - 6400 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
6400 - 12800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
> 12800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
Total | 4,042 100.0 16,488.6 100.0 11.7 6,016.8 4.3 | 3,196 100.0 45,916.0 100.0 40.7 84.1 0.1
 
Notes:
1) State Government agencies and commercial sources provided base data.
2) The Reserves and Production Division, Office of Oil and Gas, EIA has reviewed and edited inaccurate production data.
3) To be consistent between states a GOR of 6,000 (cf/bbl) for each years production was used to classify wells.
     If the GOR was less than 6,000 (cf/bbl) the well was classed an oil well, greater than or equal 6,000 (cf/bbl) were gas wells.
4) To determine production rate brackets for the first and last year of a wells life the annual production was divided
     by the number of days in the productive months. For other years the annual production was divided by 365 or 366 days.
5) Gas volumes have been converted from the various state pressure bases to the Federal base (14.73 psia).
 
                                                                                                                            29APR08

 


Montana 1993
 
Distribution of Wells by Production Rate Bracket
 

  Oil Wells   Gas Wells
Prod.
Rate
Bracket
(BOE/Day)		 |
|
|
|		 # of
Oil
Wells		 % of
Oil
Wells		 Annual
Oil
Prod.
(Mbbl)		 % of
Oil
Prod.		 Oil
Rate
per Well
(bbl/Day)		 Annual
Gas
Prod.
(MMcf)		 Gas
Rate
per Well
(Mcf/Day)		 |
|
|
|		 # of
Gas
Wells		 % of
Gas
Wells		 Annual
Gas
Prod.
(MMcf)		 % of
Gas
Prod.		 Gas
Rate
per Well
(Mcf/Day)		 Annual
Oil
Prod.
(Mbbl)		 Oil
Rate
per Well
(bbl/Day)
0 - 1 | 1,324 31.1 211.0 1.2 0.5 4.4 0.0 | 408 13.0 431.8 0.9 3.0 0.0 0.0
1 - 2 | 619 14.6 316.1 1.8 1.4 18.0 0.1 | 417 13.3 1,337.1 2.7 9.0 1.4 0.0
2 - 4 | 483 11.4 478.9 2.8 2.8 60.0 0.3 | 788 25.1 4,912.8 9.9 17.3 1.7 0.0
4 - 6 | 227 5.3 388.9 2.2 4.8 60.1 0.7 | 532 16.9 5,652.6 11.4 29.6 0.4 0.0
6 - 8 | 154 3.6 367.3 2.1 6.7 72.5 1.3 | 313 10.0 4,669.9 9.4 41.6 2.1 0.0
8 - 10 | 130 3.1 406.0 2.3 8.7 83.4 1.8 | 197 6.3 3,845.4 7.8 54.0 2.3 0.0
Subtotal <=10 | 2,937 69.1 2,168.2 12.5 2.1 298.5 0.3 | 2,655 84.4 20,849.6 42.1 22.0 8.0 0.0
10 - 12 | 108 2.5 391.9 2.3 10.4 115.7 3.1 | 118 3.8 2,728.1 5.5 65.0 1.6 0.0
12 - 15 | 160 3.8 729.3 4.2 12.8 253.5 4.4 | 84 2.7 2,358.0 4.8 79.4 2.9 0.1
Subtotal <=15 | 3,205 75.4 3,289.5 18.9 2.9 667.7 0.6 | 2,857 90.9 25,935.7 52.4 25.4 12.4 0.0
15 - 20 | 227 5.3 1,332.2 7.7 16.5 463.0 5.7 | 97 3.1 3,512.9 7.1 102.0 7.8 0.2
20 - 25 | 142 3.3 1,050.0 6.0 20.9 428.9 8.6 | 38 1.2 1,768.7 3.6 131.2 5.3 0.4
25 - 30 | 149 3.5 1,371.2 7.9 25.6 564.8 10.5 | 34 1.1 2,006.4 4.1 164.1 0.0 0.0
30 - 40 | 175 4.1 2,054.4 11.8 32.7 762.5 12.1 | 30 1.0 2,289.1 4.6 209.6 0.0 0.0
40 - 50 | 103 2.4 1,500.6 8.6 41.6 777.1 21.5 | 24 0.8 2,058.8 4.2 252.6 15.1 1.9
50 - 100 | 191 4.5 4,121.1 23.7 61.4 1,637.7 24.4 | 41 1.3 5,369.5 10.8 397.4 10.1 0.7
100 - 200 | 56 1.3 2,388.7 13.7 123.4 1,073.0 55.4 | 22 0.7 5,861.5 11.8 773.5 9.7 1.3
200 - 400 | 4 0.1 293.8 1.7 219.4 191.9 143.3 | 1 0.0 710.1 1.4 1,945.6 0.0 0.0
400 - 800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
800 - 1600 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
1600 - 3200 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
3200 - 6400 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
6400 - 12800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
> 12800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
Total | 4,252 100.0 17,401.4 100.0 11.6 6,566.7 4.4 | 3,144 100.0 49,512.7 100.0 44.2 60.5 0.1
 
Notes:
1) State Government agencies and commercial sources provided base data.
2) The Reserves and Production Division, Office of Oil and Gas, EIA has reviewed and edited inaccurate production data.
3) To be consistent between states a GOR of 6,000 (cf/bbl) for each years production was used to classify wells.
     If the GOR was less than 6,000 (cf/bbl) the well was classed an oil well, greater than or equal 6,000 (cf/bbl) were gas wells.
4) To determine production rate brackets for the first and last year of a wells life the annual production was divided
     by the number of days in the productive months. For other years the annual production was divided by 365 or 366 days.
5) Gas volumes have been converted from the various state pressure bases to the Federal base (14.73 psia).
 
                                                                                                                            29APR08

 


Montana 1992
 
Distribution of Wells by Production Rate Bracket
 

  Oil Wells   Gas Wells
Prod.
Rate
Bracket
(BOE/Day)		 |
|
|
|		 # of
Oil
Wells		 % of
Oil
Wells		 Annual
Oil
Prod.
(Mbbl)		 % of
Oil
Prod.		 Oil
Rate
per Well
(bbl/Day)		 Annual
Gas
Prod.
(MMcf)		 Gas
Rate
per Well
(Mcf/Day)		 |
|
|
|		 # of
Gas
Wells		 % of
Gas
Wells		 Annual
Gas
Prod.
(MMcf)		 % of
Gas
Prod.		 Gas
Rate
per Well
(Mcf/Day)		 Annual
Oil
Prod.
(Mbbl)		 Oil
Rate
per Well
(bbl/Day)
0 - 1 | 1,264 28.7 232.9 1.3 0.5 4.6 0.0 | 391 12.5 407.3 0.9 3.1 0.0 0.0
1 - 2 | 655 14.9 334.0 1.8 1.4 20.2 0.1 | 401 12.8 1,286.5 2.7 9.0 0.5 0.0
2 - 4 | 530 12.0 530.8 2.9 2.8 59.3 0.3 | 851 27.1 5,341.2 11.2 17.6 1.1 0.0
4 - 6 | 275 6.3 456.4 2.5 4.8 95.8 1.0 | 536 17.1 5,572.0 11.7 29.5 1.2 0.0
6 - 8 | 173 3.9 404.8 2.2 6.7 94.9 1.6 | 312 10.0 4,573.4 9.6 41.8 1.4 0.0
8 - 10 | 139 3.2 417.3 2.3 8.7 78.8 1.6 | 176 5.6 3,229.8 6.8 53.8 0.0 0.0
Subtotal <=10 | 3,036 69.0 2,376.3 12.9 2.2 353.6 0.3 | 2,667 85.1 20,410.1 42.8 21.8 4.2 0.0
10 - 12 | 123 2.8 458.2 2.5 10.4 136.5 3.1 | 93 3.0 1,994.0 4.2 64.7 2.1 0.1
12 - 15 | 144 3.3 660.3 3.6 12.9 191.7 3.8 | 85 2.7 2,294.1 4.8 78.7 6.2 0.2
Subtotal <=15 | 3,303 75.1 3,494.7 18.9 3.0 681.8 0.6 | 2,845 90.7 24,698.2 51.8 24.7 12.5 0.0
15 - 20 | 210 4.8 1,237.2 6.7 16.4 481.5 6.4 | 86 2.7 3,110.7 6.5 102.8 5.0 0.2
20 - 25 | 178 4.0 1,339.8 7.3 20.9 511.8 8.0 | 49 1.6 2,193.5 4.6 132.2 7.7 0.5
25 - 30 | 150 3.4 1,394.8 7.6 25.9 576.3 10.7 | 32 1.0 1,808.0 3.8 163.3 1.0 0.1
30 - 40 | 179 4.1 2,095.4 11.3 32.4 865.9 13.4 | 33 1.1 2,211.7 4.6 212.0 0.0 0.0
40 - 50 | 108 2.5 1,640.8 8.9 41.7 750.8 19.1 | 20 0.6 1,731.8 3.6 261.7 1.2 0.2
50 - 100 | 209 4.8 4,536.2 24.6 62.2 2,105.1 28.9 | 52 1.7 6,232.6 13.1 385.5 17.8 1.1
100 - 200 | 55 1.3 2,267.7 12.3 121.5 1,058.5 56.7 | 15 0.5 3,999.9 8.4 766.8 9.8 1.9
200 - 400 | 8 0.2 464.1 2.5 211.1 213.3 97.0 | 2 0.1 728.1 1.5 1,589.8 0.0 0.0
400 - 800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 1 0.0 984.4 2.1 2,689.7 0.0 0.0
800 - 1600 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
1600 - 3200 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
3200 - 6400 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
6400 - 12800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
> 12800 | 0 0.0 0.0 0.0 0.0 0.0 0.0 | 0 0.0 0.0 0.0 0.0 0.0 0.0
Total | 4,400 100.0 18,470.7 100.0 11.9 7,244.9 4.7 | 3,135 100.0 47,698.8 100.0 43.5 54.9 0.1
 
Notes:
1) State Government agencies and commercial sources provided base data.
2) The Reserves and Production Division, Office of Oil and Gas, EIA has reviewed and edited inaccurate production data.
3) To be consistent between states a GOR of 6,000 (cf/bbl) for each years production was used to classify wells.
     If the GOR was less than 6,000 (cf/bbl) the well was classed an oil well, greater than or equal 6,000 (cf/bbl) were gas wells.
4) To determine production rate brackets for the first and last year of a wells life the annual production was divided
     by the number of days in the productive months. For other years the annual production was divided by 365 or 366 days.
5) Gas volumes have been converted from the various state pressure bases to the Federal base (14.73 psia).
 
                                                                                                                            29APR08