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Montana 2009
 
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 | 1,253 28.4 190.5 0.7 0.4 4.1 0.0 | 1,469 21.7 1,417.1 1.7 2.8 0.4 0.0
1 - 2 | 470 10.7 231.2 0.8 1.4 27.7 0.2 | 1,171 17.3 3,718.1 4.4 8.8 0.9 0.0
2 - 4 | 420 9.5 411.8 1.5 2.8 66.0 0.5 | 1,390 20.6 8,648.1 10.3 17.4 2.3 0.0
4 - 6 | 217 4.9 380.3 1.4 4.9 81.5 1.0 | 670 9.9 7,027.3 8.3 29.6 2.1 0.0
6 - 8 | 178 4.0 414.5 1.5 6.6 107.6 1.7 | 457 6.8 6,916.0 8.2 41.9 1.3 0.0
8 - 10 | 145 3.3 434.9 1.6 8.4 155.2 3.0 | 391 5.8 7,409.5 8.8 53.7 4.8 0.0
Subtotal <=10 | 2,683 60.8 2,063.3 7.5 2.2 442.2 0.5 | 5,548 82.1 35,136.1 41.7 18.0 11.7 0.0
10 - 12 | 115 2.6 430.2 1.6 10.4 149.1 3.6 | 294 4.3 6,948.4 8.2 65.7 0.4 0.0
12 - 15 | 159 3.6 715.5 2.6 12.7 289.8 5.1 | 369 5.5 10,557.2 12.5 80.6 1.7 0.0
Subtotal <=15 | 2,957 67.1 3,209.0 11.7 3.1 881.0 0.9 | 6,211 91.9 52,641.6 62.5 24.0 13.8 0.0
15 - 20 | 236 5.4 1,353.5 4.9 16.0 651.8 7.7 | 266 3.9 9,636.2 11.4 102.5 8.8 0.1
20 - 25 | 171 3.9 1,284.8 4.7 20.7 669.7 10.8 | 98 1.4 4,499.9 5.3 129.5 7.5 0.2
25 - 30 | 130 2.9 1,162.1 4.2 25.0 686.0 14.7 | 50 0.7 2,826.3 3.4 160.5 12.7 0.7
30 - 40 | 209 4.7 2,351.1 8.5 31.2 1,673.1 22.2 | 52 0.8 3,565.7 4.2 201.8 18.7 1.1
40 - 50 | 159 3.6 2,260.9 8.2 39.1 2,033.4 35.1 | 28 0.4 2,610.5 3.1 255.4 21.8 2.1
50 - 100 | 374 8.5 8,061.3 29.3 59.6 7,830.3 57.8 | 41 0.6 4,524.2 5.4 358.3 105.3 8.3
100 - 200 | 157 3.6 6,579.4 23.9 115.8 5,571.8 98.1 | 13 0.2 3,493.5 4.1 736.2 73.2 15.4
200 - 400 | 17 0.4 1,278.8 4.6 223.5 1,048.1 183.2 | 1 0.0 466.2 0.6 1,277.1 5.9 16.1
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 | 4,410 100.0 27,541.1 100.0 17.7 21,045.3 13.5 | 6,760 100.0 84,264.0 100.0 35.3 267.8 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).
 
                                                                                                                            02NOV10

 


Montana 2008
 
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 | 1,237 27.9 200.5 0.6 0.5 3.5 0.0 | 1,285 18.9 1,253.3 1.3 2.8 0.4 0.0
1 - 2 | 474 10.7 237.7 0.8 1.4 23.4 0.1 | 1,103 16.2 3,477.2 3.6 8.9 1.4 0.0
2 - 4 | 398 9.0 401.6 1.3 2.8 75.3 0.5 | 1,369 20.1 8,384.6 8.6 17.4 2.8 0.0
4 - 6 | 240 5.4 412.8 1.3 4.8 93.3 1.1 | 736 10.8 7,651.5 7.9 29.3 1.4 0.0
6 - 8 | 169 3.8 407.6 1.3 6.7 98.6 1.6 | 455 6.7 6,606.0 6.8 41.5 4.2 0.0
8 - 10 | 166 3.7 509.7 1.6 8.5 193.5 3.2 | 349 5.1 6,608.9 6.8 53.3 5.0 0.0
Subtotal <=10 | 2,684 60.5 2,169.9 6.9 2.3 487.7 0.5 | 5,297 77.7 33,981.5 35.0 18.3 15.1 0.0
10 - 12 | 96 2.2 352.8 1.1 10.4 125.0 3.7 | 252 3.7 5,789.6 6.0 65.4 4.1 0.0
12 - 15 | 156 3.5 710.0 2.3 12.6 269.3 4.8 | 369 5.4 10,488.5 10.8 80.7 0.3 0.0
Subtotal <=15 | 2,936 66.1 3,232.7 10.3 3.1 882.0 0.8 | 5,918 86.9 50,259.5 51.8 24.2 19.5 0.0
15 - 20 | 218 4.9 1,266.0 4.0 16.2 512.3 6.6 | 423 6.2 14,877.7 15.3 102.9 2.4 0.0
20 - 25 | 159 3.6 1,177.6 3.8 20.7 594.5 10.4 | 191 2.8 8,324.8 8.6 131.1 10.5 0.2
25 - 30 | 135 3.0 1,226.2 3.9 25.2 686.6 14.1 | 96 1.4 4,996.6 5.1 163.3 5.4 0.2
30 - 40 | 193 4.3 2,163.6 6.9 31.4 1,376.4 20.0 | 70 1.0 4,139.7 4.3 203.7 16.6 0.8
40 - 50 | 123 2.8 1,781.0 5.7 39.9 1,344.4 30.1 | 42 0.6 3,291.4 3.4 263.1 22.2 1.8
50 - 100 | 411 9.3 8,996.1 28.7 60.9 8,046.4 54.4 | 55 0.8 6,572.6 6.8 364.0 79.4 4.4
100 - 200 | 228 5.1 9,272.2 29.6 119.4 7,308.2 94.1 | 15 0.2 2,987.3 3.1 648.4 87.6 19.0
200 - 400 | 36 0.8 2,194.1 7.0 213.3 1,781.9 173.3 | 3 0.0 1,589.2 1.6 1,447.3 26.4 24.1
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 | 4,439 100.0 31,309.6 100.0 19.9 22,532.8 14.3 | 6,813 100.0 97,038.8 100.0 40.9 270.1 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).
 
                                                                                                                            02NOV10

 


Montana 2007
 
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 | 1,148 26.8 185.8 0.5 0.5 2.3 0.0 | 1,255 18.8 1,172.5 1.2 2.8 1.0 0.0
1 - 2 | 465 10.8 236.0 0.7 1.4 26.7 0.2 | 1,083 16.2 3,342.5 3.4 8.9 2.7 0.0
2 - 4 | 385 9.0 388.7 1.1 2.8 57.7 0.4 | 1,325 19.9 8,023.3 8.2 17.5 1.7 0.0
4 - 6 | 225 5.2 377.2 1.1 4.7 80.9 1.0 | 700 10.5 7,059.2 7.2 29.3 1.7 0.0
6 - 8 | 192 4.5 445.2 1.3 6.6 115.4 1.7 | 402 6.0 5,769.6 5.9 41.3 1.7 0.0
8 - 10 | 152 3.5 467.1 1.3 8.6 120.7 2.2 | 311 4.7 5,733.2 5.8 53.2 6.4 0.1
Subtotal <=10 | 2,567 59.9 2,100.0 6.1 2.3 403.7 0.4 | 5,076 76.1 31,100.2 31.7 17.8 15.2 0.0
10 - 12 | 109 2.5 405.2 1.2 10.2 189.2 4.8 | 268 4.0 6,007.2 6.1 65.6 0.9 0.0
12 - 15 | 151 3.5 697.1 2.0 12.8 256.7 4.7 | 277 4.2 7,685.7 7.8 80.6 3.7 0.0
Subtotal <=15 | 2,827 65.9 3,202.4 9.2 3.2 849.6 0.8 | 5,621 84.3 44,793.2 45.6 23.2 19.7 0.0
15 - 20 | 191 4.5 1,111.3 3.2 16.3 432.4 6.3 | 436 6.5 15,205.2 15.5 103.8 7.2 0.0
20 - 25 | 157 3.7 1,173.7 3.4 21.0 495.8 8.9 | 241 3.6 9,977.7 10.2 132.0 3.8 0.1
25 - 30 | 109 2.5 977.5 2.8 25.6 473.4 12.4 | 111 1.7 5,715.9 5.8 163.4 0.0 0.0
30 - 40 | 169 3.9 1,909.6 5.5 31.7 1,040.0 17.3 | 133 2.0 7,799.2 7.9 203.0 16.2 0.4
40 - 50 | 112 2.6 1,605.8 4.6 40.1 1,065.6 26.6 | 38 0.6 2,944.3 3.0 257.9 15.0 1.3
50 - 100 | 370 8.6 8,211.0 23.7 63.7 6,406.9 49.7 | 72 1.1 8,223.5 8.4 372.7 68.0 3.1
100 - 200 | 294 6.9 11,866.9 34.2 126.3 8,553.9 91.0 | 12 0.2 2,680.0 2.7 688.1 63.6 16.3
200 - 400 | 57 1.3 4,215.9 12.2 228.6 2,329.2 126.3 | 3 0.0 853.3 0.9 1,269.8 0.0 0.0
400 - 800 | 3 0.1 374.5 1.1 409.8 701.8 767.8 | 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 | 4,289 100.0 34,648.5 100.0 22.9 22,348.5 14.8 | 6,667 100.0 98,192.3 100.0 43.3 193.6 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).
 
                                                                                                                            02NOV10

 


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 | 1,110 26.5 172.0 0.5 0.4 3.9 0.0 | 1,158 18.6 1,092.6 1.2 3.0 0.3 0.0
1 - 2 | 490 11.7 243.0 0.7 1.4 22.9 0.1 | 975 15.7 3,083.3 3.3 8.9 1.0 0.0
2 - 4 | 382 9.1 378.4 1.0 2.8 48.8 0.4 | 1,279 20.6 7,944.1 8.5 17.5 3.9 0.0
4 - 6 | 212 5.1 357.8 1.0 4.7 73.1 1.0 | 685 11.0 6,953.2 7.4 29.3 0.8 0.0
6 - 8 | 216 5.2 504.1 1.4 6.6 103.7 1.4 | 354 5.7 5,088.6 5.4 41.5 0.4 0.0
8 - 10 | 140 3.3 429.2 1.2 8.6 109.2 2.2 | 264 4.2 4,722.1 5.0 53.6 5.5 0.1
Subtotal <=10 | 2,550 60.9 2,084.6 5.7 2.3 361.6 0.4 | 4,715 75.9 28,883.9 30.7 17.9 11.9 0.0
10 - 12 | 120 2.9 444.7 1.2 10.4 162.6 3.8 | 226 3.6 5,113.1 5.4 65.7 1.8 0.0
12 - 15 | 131 3.1 602.2 1.7 12.6 263.7 5.5 | 282 4.5 7,713.8 8.2 80.2 4.4 0.0
Subtotal <=15 | 2,801 66.9 3,131.5 8.6 3.2 787.9 0.8 | 5,223 84.1 41,710.9 44.4 23.3 18.0 0.0
15 - 20 | 209 5.0 1,237.2 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 1,087.5 3.0 21.0 435.9 8.4 | 223 3.6 9,764.0 10.4 133.5 6.4 0.1
25 - 30 | 106 2.5 969.2 2.7 25.6 432.0 11.4 | 136 2.2 6,451.0 6.9 163.6 3.2 0.1
30 - 40 | 155 3.7 1,723.5 4.7 31.4 968.5 17.7 | 127 2.0 7,837.5 8.3 205.8 0.3 0.0
40 - 50 | 99 2.4 1,405.9 3.9 41.0 788.8 23.0 | 47 0.8 3,911.3 4.2 261.3 8.7 0.6
50 - 100 | 266 6.4 5,835.1 16.1 64.4 3,853.3 42.5 | 60 1.0 6,979.8 7.4 393.2 16.6 0.9
100 - 200 | 271 6.5 11,291.9 31.1 130.3 6,801.4 78.5 | 20 0.3 3,746.5 4.0 783.0 0.0 0.0
200 - 400 | 124 3.0 8,862.1 24.4 236.8 4,915.0 131.3 | 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 | 4,184 100.0 36,294.6 100.0 24.8 19,995.1 13.7 | 6,212 100.0 94,010.2 100.0 44.7 56.4 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).
 
                                                                                                                            02NOV10

 


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 | 1,090 27.4 179.4 0.5 0.5 3.8 0.0 | 896 15.7 905.2 1.0 3.0 0.5 0.0
1 - 2 | 474 11.9 239.4 0.7 1.4 34.1 0.2 | 883 15.5 2,757.1 3.0 8.8 1.7 0.0
2 - 4 | 366 9.2 362.0 1.1 2.9 37.4 0.3 | 1,190 20.9 7,394.4 8.0 17.6 2.1 0.0
4 - 6 | 236 5.9 400.7 1.2 4.8 78.7 0.9 | 755 13.3 7,661.9 8.3 29.1 0.5 0.0
6 - 8 | 164 4.1 384.0 1.2 6.7 98.0 1.7 | 338 5.9 4,951.0 5.4 41.7 0.9 0.0
8 - 10 | 148 3.7 448.5 1.4 8.6 115.4 2.2 | 223 3.9 4,009.0 4.3 53.1 5.7 0.1
Subtotal <=10 | 2,478 62.3 2,014.0 6.1 2.3 367.4 0.4 | 4,285 75.3 27,678.7 30.0 18.5 11.5 0.0
10 - 12 | 116 2.9 419.5 1.3 10.3 167.1 4.1 | 203 3.6 4,541.1 4.9 66.0 0.9 0.0
12 - 15 | 136 3.4 623.8 1.9 12.6 246.7 5.0 | 232 4.1 6,285.0 6.8 80.7 0.0 0.0
Subtotal <=15 | 2,730 68.6 3,057.3 9.3 3.2 781.2 0.8 | 4,720 82.9 38,504.8 41.8 23.4 12.5 0.0
15 - 20 | 206 5.2 1,170.2 3.5 16.2 474.3 6.5 | 310 5.4 10,899.6 11.8 104.5 2.7 0.0
20 - 25 | 142 3.6 1,080.6 3.3 21.1 469.3 9.1 | 214 3.8 9,018.7 9.8 134.4 0.0 0.0
25 - 30 | 114 2.9 1,037.3 3.1 25.4 488.1 11.9 | 142 2.5 7,302.3 7.9 163.8 0.0 0.0
30 - 40 | 148 3.7 1,656.2 5.0 32.2 766.7 14.9 | 147 2.6 8,523.9 9.2 204.6 5.9 0.1
40 - 50 | 97 2.4 1,407.1 4.3 41.0 728.5 21.2 | 70 1.2 5,592.3 6.1 269.8 0.0 0.0
50 - 100 | 206 5.2 4,428.9 13.4 64.6 2,420.7 35.3 | 71 1.2 8,200.0 8.9 398.0 6.5 0.3
100 - 200 | 184 4.6 7,609.4 23.0 134.8 4,186.1 74.1 | 18 0.3 3,323.0 3.6 752.8 0.0 0.0
200 - 400 | 132 3.3 9,312.9 28.2 246.2 5,445.9 143.9 | 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 | 3,979 100.0 33,036.0 100.0 23.9 16,707.0 12.1 | 5,694 100.0 92,173.8 100.0 47.3 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).
 
                                                                                                                            02NOV10

 


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 28.5 174.0 0.7 0.5 3.6 0.0 | 815 15.2 834.8 1.0 3.0 0.2 0.0
1 - 2 | 448 12.0 226.2 0.9 1.4 13.4 0.1 | 805 15.1 2,547.8 2.9 8.9 1.4 0.0
2 - 4 | 369 9.9 374.4 1.5 2.8 45.6 0.3 | 1,142 21.4 7,077.4 8.1 17.5 2.5 0.0
4 - 6 | 211 5.7 369.3 1.5 4.8 73.9 1.0 | 732 13.7 7,552.7 8.6 29.1 1.5 0.0
6 - 8 | 165 4.4 406.8 1.7 6.8 78.1 1.3 | 365 6.8 5,180.8 5.9 41.5 0.2 0.0
8 - 10 | 136 3.6 417.9 1.7 8.5 139.6 2.8 | 198 3.7 3,462.4 3.9 53.7 3.3 0.1
Subtotal <=10 | 2,390 64.1 1,968.5 8.0 2.3 354.2 0.4 | 4,057 75.9 26,655.8 30.4 18.7 9.0 0.0
10 - 12 | 104 2.8 386.7 1.6 10.2 166.0 4.4 | 159 3.0 3,443.3 3.9 65.8 1.5 0.0
12 - 15 | 141 3.8 638.1 2.6 12.5 273.8 5.4 | 205 3.8 5,473.0 6.2 80.3 2.8 0.0
Subtotal <=15 | 2,635 70.7 2,993.3 12.2 3.1 794.0 0.8 | 4,421 82.7 35,572.1 40.5 23.0 13.4 0.0
15 - 20 | 196 5.3 1,163.7 4.7 16.4 372.9 5.3 | 265 5.0 9,093.5 10.4 104.1 0.0 0.0
20 - 25 | 139 3.7 1,052.3 4.3 21.1 425.2 8.5 | 194 3.6 8,221.5 9.4 133.0 0.0 0.0
25 - 30 | 117 3.1 1,083.3 4.4 25.8 408.6 9.7 | 132 2.5 6,466.9 7.4 163.0 0.0 0.0
30 - 40 | 139 3.7 1,575.7 6.4 31.9 742.1 15.0 | 172 3.2 9,267.4 10.6 206.3 1.2 0.0
40 - 50 | 97 2.6 1,416.0 5.8 41.5 707.7 20.7 | 56 1.0 3,706.6 4.2 264.1 0.2 0.0
50 - 100 | 199 5.3 4,371.7 17.8 64.3 1,941.6 28.6 | 85 1.6 9,787.6 11.1 405.1 0.1 0.0
100 - 200 | 102 2.7 4,061.2 16.5 135.0 1,871.2 62.2 | 20 0.4 4,368.2 5.0 799.5 0.6 0.1
200 - 400 | 90 2.4 5,755.2 23.5 243.8 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 4.4 411.9 575.6 221.8 | 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 | 3,728 100.0 24,541.2 100.0 18.6 10,462.6 7.9 | 5,348 100.0 87,787.3 100.0 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).
 
                                                                                                                            02NOV10

 


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 | 1,025 28.4 170.8 0.9 0.5 3.7 0.0 | 752 15.2 778.9 1.0 3.0 0.2 0.0
1 - 2 | 460 12.8 236.1 1.2 1.4 14.1 0.1 | 743 15.0 2,342.8 3.0 8.8 1.7 0.0
2 - 4 | 359 10.0 354.6 1.8 2.8 43.8 0.3 | 1,088 22.0 6,755.2 8.6 17.4 4.0 0.0
4 - 6 | 196 5.4 336.1 1.7 4.8 68.6 1.0 | 701 14.1 7,257.2 9.2 29.0 1.4 0.0
6 - 8 | 159 4.4 380.9 2.0 6.7 70.1 1.2 | 363 7.3 5,314.8 6.8 41.3 5.2 0.0
8 - 10 | 131 3.6 401.0 2.1 8.5 128.3 2.7 | 208 4.2 3,927.1 5.0 54.2 1.3 0.0
Subtotal <=10 | 2,330 64.6 1,879.5 9.8 2.3 328.6 0.4 | 3,855 77.8 26,376.0 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 4.4 717.8 3.7 12.6 285.7 5.0 | 196 4.0 5,108.6 6.5 79.7 2.0 0.0
Subtotal <=15 | 2,601 72.1 3,016.9 15.7 3.3 775.8 0.8 | 4,179 84.3 34,277.3 43.6 23.3 19.8 0.0
15 - 20 | 198 5.5 1,142.5 5.9 16.4 378.9 5.5 | 225 4.5 7,150.4 9.1 103.9 0.0 0.0
20 - 25 | 126 3.5 933.5 4.9 20.7 396.7 8.8 | 172 3.5 6,764.8 8.6 134.9 0.0 0.0
25 - 30 | 118 3.3 1,076.5 5.6 25.6 453.3 10.8 | 117 2.4 5,320.8 6.8 163.6 0.3 0.0
30 - 40 | 148 4.1 1,661.7 8.6 31.8 855.2 16.4 | 120 2.4 6,918.4 8.8 207.4 0.5 0.0
40 - 50 | 89 2.5 1,315.3 6.8 41.6 690.3 21.8 | 50 1.0 4,236.0 5.4 268.7 0.2 0.0
50 - 100 | 211 5.8 4,659.1 24.2 62.7 2,072.1 27.9 | 69 1.4 7,705.8 9.8 403.0 0.4 0.0
100 - 200 | 64 1.8 2,477.6 12.9 130.6 965.2 50.9 | 21 0.4 4,640.8 5.9 845.9 0.0 0.0
200 - 400 | 45 1.2 2,549.3 13.2 228.0 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 | 3,607 100.0 19,241.3 100.0 15.1 8,177.5 6.4 | 4,956 100.0 78,644.9 100.0 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).
 
                                                                                                                            02NOV10

 


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 | 992 27.9 170.3 1.0 0.5 4.0 0.0 | 700 14.1 745.9 0.9 3.0 0.1 0.0
1 - 2 | 493 13.9 246.5 1.5 1.4 11.0 0.1 | 665 13.4 2,138.3 2.7 8.9 1.3 0.0
2 - 4 | 332 9.3 320.5 1.9 2.8 38.6 0.3 | 1,029 20.8 6,275.3 7.9 17.5 1.4 0.0
4 - 6 | 217 6.1 358.4 2.1 4.7 82.9 1.1 | 877 17.7 7,289.5 9.2 29.3 2.7 0.0
6 - 8 | 154 4.3 371.3 2.2 6.8 67.9 1.2 | 411 8.3 5,392.8 6.8 41.2 1.3 0.0
8 - 10 | 136 3.8 416.9 2.5 8.5 146.0 3.0 | 222 4.5 3,914.1 4.9 53.7 0.1 0.0
Subtotal <=10 | 2,324 65.4 1,883.9 11.2 2.3 350.4 0.4 | 3,904 78.9 25,755.8 32.4 19.8 6.8 0.0
10 - 12 | 112 3.2 414.5 2.5 10.2 185.1 4.5 | 131 2.6 2,821.3 3.6 65.0 0.2 0.0
12 - 15 | 161 4.5 745.4 4.4 12.8 265.7 4.6 | 189 3.8 4,885.4 6.1 79.2 10.3 0.2
Subtotal <=15 | 2,597 73.1 3,043.8 18.0 3.3 801.1 0.9 | 4,224 85.3 33,462.5 42.1 23.8 17.4 0.0
15 - 20 | 193 5.4 1,123.2 6.7 16.2 421.2 6.1 | 244 4.9 7,919.8 10.0 103.2 1.7 0.0
20 - 25 | 146 4.1 1,105.0 6.5 20.8 399.8 7.5 | 137 2.8 5,439.1 6.8 132.5 0.0 0.0
25 - 30 | 117 3.3 1,106.4 6.6 26.0 423.3 9.9 | 102 2.1 4,668.2 5.9 163.7 0.0 0.0
30 - 40 | 144 4.1 1,652.5 9.8 32.0 831.2 16.1 | 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 | 185 5.2 4,166.3 24.7 64.0 1,941.2 29.8 | 61 1.2 8,387.0 10.6 421.4 0.0 0.0
100 - 200 | 61 1.7 2,405.6 14.3 125.8 1,106.2 57.9 | 31 0.6 7,956.0 10.0 799.4 0.7 0.1
200 - 400 | 12 0.3 771.4 4.6 226.3 453.2 132.9 | 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 | 3,553 100.0 16,880.5 100.0 13.4 7,303.4 5.8 | 4,951 100.0 79,444.8 100.0 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).
 
                                                                                                                            02NOV10

 


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 | 1,032 28.3 181.2 1.1 0.5 3.0 0.0 | 684 14.7 682.2 0.9 3.0 0.9 0.0
1 - 2 | 474 13.0 238.0 1.5 1.4 10.9 0.1 | 687 14.8 2,015.9 2.7 8.9 0.3 0.0
2 - 4 | 362 9.9 349.1 2.2 2.7 36.2 0.3 | 1,070 23.0 5,998.8 8.0 17.4 2.0 0.0
4 - 6 | 229 6.3 383.3 2.4 4.8 58.3 0.7 | 761 16.3 7,316.7 9.7 29.5 3.6 0.0
6 - 8 | 164 4.5 383.0 2.4 6.6 95.4 1.7 | 338 7.3 4,626.9 6.1 41.4 1.5 0.0
8 - 10 | 119 3.3 374.5 2.3 8.7 91.0 2.1 | 206 4.4 3,680.3 4.9 52.8 1.2 0.0
Subtotal <=10 | 2,380 65.3 1,909.1 11.8 2.3 294.7 0.3 | 3,746 80.5 24,320.8 32.3 19.8 9.5 0.0
10 - 12 | 117 3.2 430.3 2.7 10.3 168.1 4.0 | 137 2.9 3,006.1 4.0 65.1 1.9 0.0
12 - 15 | 169 4.6 747.5 4.6 12.6 281.8 4.7 | 176 3.8 4,504.0 6.0 80.2 3.1 0.1
Subtotal <=15 | 2,666 73.2 3,086.9 19.0 3.3 744.7 0.8 | 4,059 87.2 31,831.0 42.3 24.0 14.5 0.0
15 - 20 | 214 5.9 1,217.0 7.5 16.5 416.6 5.6 | 210 4.5 7,146.8 9.5 103.7 5.0 0.1
20 - 25 | 148 4.1 1,096.7 6.8 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 1,538.4 9.5 32.4 639.0 13.4 | 82 1.8 5,734.3 7.6 204.0 0.0 0.0
40 - 50 | 109 3.0 1,584.7 9.8 41.4 734.5 19.2 | 31 0.7 2,757.3 3.7 269.7 0.8 0.1
50 - 100 | 195 5.4 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 5.5 223.8 387.7 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 | 3,644 100.0 16,232.5 100.0 12.7 6,602.4 5.2 | 4,656 100.0 75,322.8 100.0 49.4 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).
 
                                                                                                                            02NOV10

 


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 | 1,048 28.5 185.2 1.2 0.5 1.8 0.0 | 628 14.8 656.8 1.0 3.1 0.0 0.0
1 - 2 | 522 14.2 262.2 1.7 1.4 14.8 0.1 | 681 16.0 2,095.7 3.2 8.9 1.8 0.0
2 - 4 | 382 10.4 374.6 2.4 2.8 38.3 0.3 | 1,059 24.9 6,548.2 10.1 17.7 1.7 0.0
4 - 6 | 210 5.7 345.7 2.2 4.7 65.7 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 | 282 6.6 3,985.7 6.1 41.3 0.0 0.0
8 - 10 | 103 2.8 310.0 2.0 8.6 106.1 2.9 | 210 4.9 3,792.9 5.8 52.7 3.2 0.0
Subtotal <=10 | 2,424 66.0 1,851.4 11.9 2.2 325.8 0.4 | 3,450 81.2 23,081.3 35.5 19.4 9.3 0.0
10 - 12 | 130 3.5 473.5 3.0 10.5 154.7 3.4 | 111 2.6 2,397.0 3.7 66.2 0.6 0.0
12 - 15 | 164 4.5 738.2 4.7 12.8 266.3 4.6 | 133 3.1 3,631.1 5.6 79.7 2.4 0.1
Subtotal <=15 | 2,718 74.0 3,063.1 19.7 3.2 746.7 0.8 | 3,694 86.9 29,109.4 44.8 22.8 12.3 0.0
15 - 20 | 204 5.6 1,162.5 7.5 16.2 440.0 6.1 | 177 4.2 5,856.6 9.0 103.5 8.9 0.2
20 - 25 | 145 3.9 1,041.3 6.7 20.9 431.5 8.7 | 136 3.2 5,613.3 8.6 133.1 0.0 0.0
25 - 30 | 130 3.5 1,175.4 7.6 25.7 458.7 10.0 | 62 1.5 3,168.3 4.9 165.1 2.4 0.1
30 - 40 | 151 4.1 1,686.9 10.9 32.1 800.0 15.2 | 79 1.9 5,567.4 8.6 207.4 0.0 0.0
40 - 50 | 96 2.6 1,403.8 9.0 41.2 721.5 21.2 | 34 0.8 2,911.9 4.5 266.6 0.6 0.1
50 - 100 | 174 4.7 3,739.0 24.1 64.9 1,532.9 26.6 | 44 1.0 5,464.9 8.4 393.7 0.0 0.0
100 - 200 | 46 1.3 1,608.7 10.3 127.7 824.7 65.5 | 19 0.4 4,321.0 6.6 842.8 0.0 0.0
200 - 400 | 10 0.3 602.2 3.9 219.3 413.7 150.7 | 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 | 3,675 100.0 15,544.0 100.0 12.1 6,402.2 5.0 | 4,251 100.0 64,983.4 100.0 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).
 
                                                                                                                            02NOV10

 


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 29.9 179.1 1.2 0.5 3.6 0.0 | 537 13.9 508.7 0.9 2.8 0.1 0.0
1 - 2 | 488 13.6 238.7 1.6 1.4 12.8 0.1 | 558 14.4 1,727.2 3.1 8.8 1.6 0.0
2 - 4 | 370 10.3 369.2 2.4 2.8 38.7 0.3 | 983 25.4 6,284.6 11.3 18.0 2.1 0.0
4 - 6 | 186 5.2 307.4 2.0 4.8 73.0 1.1 | 592 15.3 6,167.7 11.1 29.3 3.7 0.0
6 - 8 | 142 4.0 335.1 2.2 6.7 97.7 2.0 | 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 | 2,372 66.3 1,776.8 11.7 2.1 320.0 0.4 | 3,160 81.6 22,494.5 40.3 20.3 10.5 0.0
10 - 12 | 111 3.1 401.4 2.6 10.4 139.0 3.6 | 103 2.7 2,242.0 4.0 65.6 1.1 0.0
12 - 15 | 157 4.4 703.5 4.6 12.8 232.0 4.2 | 120 3.1 2,937.7 5.3 79.2 6.3 0.2
Subtotal <=15 | 2,640 73.8 2,881.7 19.0 3.1 691.0 0.7 | 3,383 87.3 27,674.3 49.6 23.5 18.0 0.0
15 - 20 | 196 5.5 1,103.3 7.3 16.3 424.7 6.3 | 150 3.9 4,493.6 8.1 103.9 3.1 0.1
20 - 25 | 160 4.5 1,155.3 7.6 21.1 432.6 7.9 | 99 2.6 4,057.2 7.3 133.2 0.0 0.0
25 - 30 | 102 2.9 910.9 6.0 25.9 328.7 9.3 | 57 1.5 2,586.0 4.6 163.4 2.4 0.2
30 - 40 | 141 3.9 1,608.7 10.6 32.4 708.0 14.3 | 76 2.0 4,722.0 8.5 207.8 6.6 0.3
40 - 50 | 98 2.7 1,391.5 9.2 41.1 653.6 19.3 | 38 1.0 3,102.6 5.6 262.8 0.0 0.0
50 - 100 | 189 5.3 4,004.5 26.4 63.5 1,825.5 28.9 | 57 1.5 6,947.8 12.5 404.0 0.9 0.1
100 - 200 | 46 1.3 1,782.9 11.8 117.7 975.9 64.4 | 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 | 3,577 100.0 15,156.9 100.0 12.1 6,248.5 5.0 | 3,874 100.0 55,795.1 100.0 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).
 
                                                                                                                            02NOV10

 


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 | 1,066 29.1 176.2 1.1 0.5 4.7 0.0 | 504 14.1 524.4 1.0 3.0 0.1 0.0
1 - 2 | 490 13.4 243.8 1.5 1.4 15.2 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 | 893 24.9 5,710.5 10.8 17.9 2.8 0.0
4 - 6 | 204 5.6 346.2 2.1 4.8 66.4 0.9 | 608 17.0 6,380.2 12.0 29.4 2.6 0.0
6 - 8 | 138 3.8 331.6 2.0 6.7 64.5 1.3 | 319 8.9 4,778.7 9.0 41.6 0.7 0.0
8 - 10 | 114 3.1 351.1 2.1 8.6 80.4 2.0 | 186 5.2 3,521.3 6.6 53.2 2.0 0.0
Subtotal <=10 | 2,426 66.2 1,852.6 11.2 2.2 281.9 0.3 | 3,014 84.1 22,495.3 42.4 21.0 8.6 0.0
10 - 12 | 119 3.2 437.4 2.7 10.4 161.8 3.8 | 90 2.5 2,057.3 3.9 65.2 0.4 0.0
12 - 15 | 159 4.3 715.5 4.3 12.7 254.5 4.5 | 89 2.5 2,482.8 4.7 80.3 4.0 0.1
Subtotal <=15 | 2,704 73.8 3,005.4 18.2 3.1 698.3 0.7 | 3,193 89.1 27,035.4 50.9 23.8 12.9 0.0
15 - 20 | 228 6.2 1,318.1 8.0 16.5 480.2 6.0 | 96 2.7 3,177.9 6.0 104.0 0.3 0.0
20 - 25 | 135 3.7 1,020.5 6.2 21.2 347.6 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 | 133 3.6 1,571.7 9.5 32.7 662.8 13.8 | 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 | 166 4.5 3,601.0 21.8 62.9 1,530.8 26.7 | 49 1.4 6,504.9 12.2 427.5 0.0 0.0
100 - 200 | 61 1.7 2,353.4 14.3 121.9 1,075.3 55.7 | 14 0.4 3,089.9 5.8 710.2 0.0 0.0
200 - 400 | 17 0.5 1,074.8 6.5 230.4 578.5 124.0 | 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 | 3,663 100.0 16,500.1 100.0 12.8 6,482.8 5.0 | 3,584 100.0 53,111.6 100.0 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).
 
                                                                                                                            02NOV10

 


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 | 1,082 29.2 190.7 1.2 0.5 5.5 0.0 | 462 13.2 473.7 1.0 3.0 0.2 0.0
1 - 2 | 508 13.7 254.9 1.6 1.4 17.2 0.1 | 483 13.8 1,528.7 3.1 8.9 1.3 0.0
2 - 4 | 386 10.4 381.3 2.4 2.8 34.9 0.3 | 851 24.2 5,428.9 11.0 18.1 3.8 0.0
4 - 6 | 221 6.0 375.9 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 10.4 41.1 0.9 0.0
8 - 10 | 103 2.8 311.2 1.9 8.6 64.2 1.8 | 157 4.5 2,631.3 5.3 53.3 2.7 0.1
Subtotal <=10 | 2,456 66.3 1,877.3 11.7 2.2 273.6 0.3 | 2,920 83.2 21,386.7 43.3 21.2 12.0 0.0
10 - 12 | 104 2.8 381.1 2.4 10.5 118.3 3.3 | 126 3.6 2,459.6 5.0 65.5 2.8 0.1
12 - 15 | 147 4.0 672.6 4.2 12.8 222.3 4.2 | 115 3.3 2,671.2 5.4 80.2 1.0 0.0
Subtotal <=15 | 2,707 73.1 2,931.0 18.3 3.1 614.2 0.6 | 3,161 90.0 26,517.5 53.7 24.5 15.9 0.0
15 - 20 | 235 6.3 1,366.5 8.5 16.4 528.3 6.3 | 88 2.5 2,755.4 5.6 103.6 1.6 0.1
20 - 25 | 167 4.5 1,224.1 7.6 20.9 502.7 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 | 150 4.0 1,722.9 10.7 32.6 763.7 14.5 | 52 1.5 3,266.5 6.6 202.6 7.9 0.5
40 - 50 | 86 2.3 1,264.1 7.9 41.7 570.9 18.8 | 32 0.9 2,456.1 5.0 264.6 4.4 0.5
50 - 100 | 174 4.7 3,691.7 23.0 62.5 1,591.0 27.0 | 47 1.3 6,208.9 12.6 419.9 0.0 0.0
100 - 200 | 60 1.6 2,245.9 14.0 123.3 1,053.3 57.8 | 12 0.3 2,468.0 5.0 794.9 0.0 0.0
200 - 400 | 11 0.3 539.5 3.4 232.9 351.3 151.6 | 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 | 3,705 100.0 16,035.7 100.0 12.3 6,339.1 4.9 | 3,511 100.0 49,424.4 100.0 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).
 
                                                                                                                            02NOV10

 


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 | 1,141 30.8 196.1 1.2 0.5 5.3 0.0 | 499 15.3 520.2 1.1 2.9 0.1 0.0
1 - 2 | 509 13.8 256.3 1.6 1.4 16.9 0.1 | 519 15.9 1,649.4 3.6 8.9 1.7 0.0
2 - 4 | 340 9.2 337.3 2.1 2.8 44.2 0.4 | 802 24.5 5,191.3 11.4 18.0 0.8 0.0
4 - 6 | 225 6.1 387.1 2.4 4.8 48.3 0.6 | 606 18.5 6,508.4 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 | 120 3.2 368.7 2.3 8.6 90.1 2.1 | 119 3.6 2,261.5 5.0 53.0 1.8 0.0
Subtotal <=10 | 2,467 66.7 1,851.8 11.5 2.1 278.7 0.3 | 2,822 86.3 20,256.8 44.4 20.0 7.6 0.0
10 - 12 | 106 2.9 390.7 2.4 10.4 109.1 2.9 | 81 2.5 1,830.3 4.0 65.3 1.9 0.1
12 - 15 | 141 3.8 639.7 4.0 12.8 216.1 4.3 | 71 2.2 1,934.1 4.2 79.2 2.0 0.1
Subtotal <=15 | 2,714 73.3 2,882.2 17.9 3.0 603.9 0.6 | 2,974 90.9 24,021.2 52.7 22.6 11.5 0.0
15 - 20 | 211 5.7 1,217.0 7.6 16.2 499.2 6.6 | 77 2.4 2,740.8 6.0 102.7 0.3 0.0
20 - 25 | 179 4.8 1,338.4 8.3 20.8 626.3 9.7 | 46 1.4 2,063.0 4.5 134.5 0.0 0.0
25 - 30 | 114 3.1 1,053.1 6.5 25.8 407.3 10.0 | 52 1.6 2,982.0 6.5 161.3 3.5 0.2
30 - 40 | 155 4.2 1,779.6 11.1 32.4 732.6 13.3 | 49 1.5 3,389.8 7.4 198.8 0.7 0.0
40 - 50 | 94 2.5 1,424.5 8.9 42.0 585.7 17.3 | 19 0.6 1,543.6 3.4 259.5 9.6 1.6
50 - 100 | 175 4.7 3,925.8 24.4 65.3 1,510.3 25.1 | 43 1.3 6,133.9 13.5 407.1 8.2 0.5
100 - 200 | 49 1.3 1,860.1 11.6 125.2 753.4 50.7 | 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 | 3,701 100.0 16,092.5 100.0 12.3 6,082.4 4.7 | 3,270 100.0 45,597.5 100.0 39.1 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).
 
                                                                                                                            02NOV10

 


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 | 1,087 28.8 180.1 1.1 0.5 4.2 0.0 | 468 14.5 517.4 1.2 3.1 0.1 0.0
1 - 2 | 591 15.7 283.9 1.7 1.4 14.3 0.1 | 509 15.8 1,612.0 3.6 8.9 2.1 0.0
2 - 4 | 397 10.5 387.3 2.4 2.7 48.8 0.3 | 823 25.5 5,312.5 11.8 18.0 1.4 0.0
4 - 6 | 193 5.1 318.7 1.9 4.7 68.0 1.0 | 589 18.3 6,354.3 14.1 29.9 0.6 0.0
6 - 8 | 142 3.8 334.0 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 | 121 3.7 2,289.7 5.1 52.9 2.2 0.1
Subtotal <=10 | 2,530 67.1 1,863.4 11.3 2.1 280.6 0.3 | 2,783 86.2 20,031.1 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 | 140 3.7 636.1 3.9 12.8 218.8 4.4 | 75 2.3 2,094.9 4.7 79.5 1.5 0.1
Subtotal <=15 | 2,773 73.5 2,881.6 17.5 3.0 592.0 0.6 | 2,941 91.1 24,018.9 53.4 22.9 14.3 0.0
15 - 20 | 195 5.2 1,120.5 6.8 16.3 413.7 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 8.6 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 21.4 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 13.4 124.3 846.3 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 | 3,771 100.0 16,445.0 100.0 12.4 5,818.8 4.4 | 3,227 100.0 44,961.7 100.0 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).
 
                                                                                                                            02NOV10