My worldview is that the process and outcome of drilling conventional wells is entirely different than the process and outcome of drilling unconventional / shale / tight oil wells.
There are many, many factors to compare and contrast between drilling conventional and unconventional / shale / tight oil wells.
For example, "everyone" agrees with the "Bakken decline" phenomenon.
Recently, a reader with long experience in the oil sector stated that "all wells show a jump in production after they have been shut in for awhile, and the production jump tends to correlate with the length of time the well was off-line / shut-in." His experience goes back to vertical, conventional wells and extends into the Bakken revolution.
I have looked at a lot of production profiles, and that has not been my observation (that there is always a bump up in production after Bakken well has been returned to production after being taken off-line for some reason). There is NOT always a bump in production after a Bakken well has been shut in for awhile.
I have generally seen a huge initial production (the first 90 days) followed by a fairly severe decline, though that decline phenomenon has been less severe over the past couple of years (something operators are also noticing and reporting in their corporate presentations).
With regard to a bump up in production after being off-line, I have also noted that, in general, when a Bakken well is shut in or taken off-line for whatever reason (with perhaps one exception), production when the Bakken well comes back on-line is not particularly different than before it was taken off-line.
I certainly, as a rule, do not see a bump in production after a well comes back on-line.
The one exception: there may be a small bump in production when a well has a pump placed on it, but even then it's not every time, and it's not particularly remarkable.
Below is the typical profile that I see. This is from file report #21110, an Oasis well in an over-pressure field in the Bakken, the Alger. There is generally no explanation in the file report why the well was taken off-line. I think that's the case here; the operator notes that the well meets criteria to be identified as a "stripper well."
- 21110, 1,327, Oasis, Heron 5693 412H, Alger, t12/11; cum 163K 11/16;
- the high initial production;
- the incredible decline;
- relative flat production but steady decline;
- absolutely, no bump in production when the well is placed back on-line after being taken off-line for a significant period of time
Pool | Date | Days | BBLS Oil | Runs | BBLS Water | MCF Prod | MCF Sold | Vent/Flare |
---|---|---|---|---|---|---|---|---|
BAKKEN | 11-2016 | 30 | 485 | 556 | 1112 | 857 | 208 | 397 |
BAKKEN | 10-2016 | 31 | 1141 | 1100 | 1421 | 1295 | 881 | 414 |
BAKKEN | 9-2016 | 30 | 830 | 753 | 1629 | 763 | 511 | 0 |
BAKKEN | 8-2016 | 20 | 504 | 473 | 901 | 616 | 351 | 97 |
BAKKEN | 7-2016 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
BAKKEN | 6-2016 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
BAKKEN | 5-2016 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
BAKKEN | 4-2016 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
BAKKEN | 3-2016 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
BAKKEN | 2-2016 | 3 | 1 | 1 | 98 | 25 | 0 | 0 |
BAKKEN | 1-2016 | 0 | 0 | 31 | 0 | 0 | 0 | 0 |
BAKKEN | 12-2015 | 20 | 212 | 327 | 1246 | 201 | 33 | 0 |
BAKKEN | 11-2015 | 30 | 1042 | 935 | 1977 | 686 | 0 | 434 |
BAKKEN | 10-2015 | 31 | 355 | 370 | 1404 | 330 | 70 | 0 |
BAKKEN | 9-2015 | 29 | 772 | 730 | 2373 | 464 | 188 | 32 |
BAKKEN | 8-2015 | 24 | 244 | 278 | 1415 | 413 | 211 | 0 |
BAKKEN | 7-2015 | 31 | 570 | 554 | 1997 | 841 | 581 | 0 |
BAKKEN | 6-2015 | 30 | 684 | 673 | 2630 | 820 | 568 | 0 |
BAKKEN | 5-2015 | 27 | 555 | 584 | 1774 | 666 | 429 | 10 |
BAKKEN | 4-2015 | 30 | 510 | 495 | 2031 | 702 | 450 | 0 |
BAKKEN | 3-2015 | 31 | 474 | 469 | 1856 | 582 | 322 | 0 |
BAKKEN | 2-2015 | 28 | 509 | 528 | 1529 | 484 | 114 | 6 |
BAKKEN | 1-2015 | 31 | 829 | 840 | 2269 | 641 | 238 | 0 |
BAKKEN | 12-2014 | 31 | 716 | 730 | 3150 | 2351 | 1948 | 0 |
BAKKEN | 11-2014 | 30 | 823 | 827 | 2778 | 1193 | 803 | 0 |
BAKKEN | 10-2014 | 31 | 1112 | 1117 | 3303 | 3308 | 2918 | 0 |
BAKKEN | 9-2014 | 30 | 1360 | 1316 | 3555 | 800 | 148 | 262 |
BAKKEN | 8-2014 | 26 | 524 | 599 | 4077 | 480 | 142 | 0 |
BAKKEN | 7-2014 | 31 | 2267 | 2199 | 3353 | 544 | 0 | 141 |
BAKKEN | 6-2014 | 29 | 1229 | 1192 | 3138 | 970 | 364 | 229 |
BAKKEN | 5-2014 | 7 | 324 | 381 | 806 | 664 | 573 | 0 |
BAKKEN | 4-2014 | 30 | 1055 | 1039 | 4066 | 2073 | 1683 | 0 |
BAKKEN | 3-2014 | 31 | 1050 | 1088 | 4587 | 1023 | 0 | 620 |
BAKKEN | 2-2014 | 28 | 1701 | 1648 | 5311 | 4288 | 3924 | 0 |
BAKKEN | 1-2014 | 31 | 1340 | 1351 | 6922 | 2097 | 1694 | 0 |
BAKKEN | 12-2013 | 31 | 1632 | 1683 | 11391 | 2098 | 1695 | 0 |
BAKKEN | 11-2013 | 30 | 1891 | 1834 | 6174 | 2979 | 2589 | 0 |
BAKKEN | 10-2013 | 18 | 1423 | 1411 | 3410 | 1143 | 584 | 326 |
BAKKEN | 9-2013 | 4 | 293 | 387 | 313 | 444 | 394 | 50 |
BAKKEN | 8-2013 | 15 | 1237 | 1803 | 779 | 892 | 892 | 0 |
BAKKEN | 7-2013 | 31 | 3749 | 3867 | 2307 | 3678 | 3275 | 0 |
BAKKEN | 6-2013 | 30 | 4295 | 3954 | 3058 | 6119 | 5729 | 0 |
BAKKEN | 5-2013 | 31 | 4852 | 5393 | 3313 | 5494 | 5091 | 0 |
BAKKEN | 4-2013 | 30 | 5481 | 5442 | 3400 | 4846 | 4456 | 0 |
BAKKEN | 3-2013 | 10 | 1770 | 1239 | 783 | 1236 | 1106 | 0 |
BAKKEN | 2-2013 | 27 | 4114 | 4962 | 2993 | 5654 | 5303 | 0 |
BAKKEN | 1-2013 | 31 | 5784 | 5421 | 4076 | 7506 | 7103 | 0 |
BAKKEN | 12-2012 | 30 | 5898 | 5602 | 3837 | 5813 | 5423 | 0 |
BAKKEN | 11-2012 | 30 | 6515 | 6610 | 4610 | 8326 | 7936 | 0 |
BAKKEN | 10-2012 | 31 | 8432 | 8473 | 4815 | 5799 | 5396 | 0 |
BAKKEN | 9-2012 | 30 | 7072 | 7044 | 3774 | 6365 | 5975 | 0 |
BAKKEN | 8-2012 | 31 | 6314 | 6379 | 3546 | 5872 | 5469 | 0 |
BAKKEN | 7-2012 | 29 | 5528 | 5354 | 2385 | 3902 | 3525 | 0 |
BAKKEN | 6-2012 | 30 | 4931 | 4867 | 3020 | 2882 | 2492 | 0 |
BAKKEN | 5-2012 | 31 | 6405 | 7287 | 3940 | 5687 | 5284 | 0 |
BAKKEN | 4-2012 | 30 | 6878 | 5934 | 4079 | 5476 | 5086 | 0 |
BAKKEN | 3-2012 | 27 | 7764 | 7590 | 4901 | 5108 | 4757 | 0 |
BAKKEN | 2-2012 | 24 | 5983 | 5978 | 4396 | 3382 | 3382 | 0 |
BAKKEN | 1-2012 | 25 | 10610 | 11513 | 7144 | 4303 | 4303 | 0 |
BAKKEN | 12-2011 | 31 | 16474 | 15540 | 20214 | 17562 | 2946 | 14616 |
BAKKEN | 11-2011 | 25 | 4079 | 3793 | 7306 | 5017 | 0 | 5017 |
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