Updates
June 13, 2016: a reader writes:
EOR (enhanced oil recovery) should have a good future in the Bakken. Water flooding should be great (water flooding is sometimes considered "primary recovery").
The least productive well on a pad, or a nearby pad would be used as a salt water reinjection well. It takes some horsepower to do this but the readily available "cheap" gas for the pumps should make it exceptionally profitable.
Original Post
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Well #3 -- note the increase in water production noted in red --
Pool | Date | Days | BBLS Oil | Runs | BBLS Water | MCF Prod | MCF Sold | Vent/Flare |
---|---|---|---|---|---|---|---|---|
BAKKEN | 4-2016 | 30 | 3636 | 3557 | 7336 | 4641 | 4551 | 0 |
BAKKEN | 3-2016 | 31 | 3065 | 3250 | 10617 | 3867 | 3749 | 26 |
BAKKEN | 2-2016 | 29 | 1888 | 1838 | 11169 | 2325 | 2204 | 35 |
BAKKEN | 1-2016 | 30 | 2707 | 2658 | 15135 | 3860 | 2485 | 1285 |
BAKKEN | 12-2015 | 13 | 1291 | 1322 | 6566 | 1975 | 0 | 1938 |
BAKKEN | 11-2015 | 13 | 1126 | 1132 | 722 | 1109 | 0 | 1070 |
BAKKEN | 10-2015 | 29 | 2681 | 2609 | 1579 | 3286 | 2346 | 858 |
BAKKEN | 9-2015 | 30 | 2785 | 2953 | 1931 | 3655 | 3189 | 376 |
BAKKEN | 8-2015 | 31 | 2966 | 3058 | 2837 | 4123 | 4001 | 29 |
Well #4 -- note: no increase in oil production, but look at the produced water in red:
Pool | Date | Days | BBLS Oil | Runs | BBLS Water | MCF Prod | MCF Sold | Vent/Flare |
---|---|---|---|---|---|---|---|---|
BAKKEN | 4-2016 | 30 | 6976 | 6797 | 6879 | 10897 | 10807 | 0 |
BAKKEN | 3-2016 | 31 | 6656 | 6965 | 9752 | 11138 | 10410 | 635 |
BAKKEN | 2-2016 | 29 | 5434 | 5357 | 12855 | 9725 | 9511 | 128 |
BAKKEN | 1-2016 | 30 | 5699 | 5500 | 14309 | 8791 | 5518 | 3185 |
BAKKEN | 12-2015 | 25 | 4979 | 5024 | 19680 | 7301 | 5694 | 1534 |
BAKKEN | 11-2015 | 13 | 1450 | 1510 | 1070 | 2691 | 2399 | 253 |
BAKKEN | 10-2015 | 31 | 3533 | 3446 | 2296 | 6262 | 6032 | 143 |
BAKKEN | 9-2015 | 30 | 3444 | 3645 | 2431 | 5867 | 5240 | 537 |
BAKKEN | 8-2015 | 31 | 3782 | 3859 | 2429 | 7385 | 7231 | 61 |
Well #1: no increase in either water or oil -- this well will turn out to be the farthest from the other wells; this well was not taken off-line during this period, unlike the other wells in this exercise:
Pool | Date | Days | BBLS Oil | Runs | BBLS Water | MCF Prod | MCF Sold | Vent/Flare |
---|---|---|---|---|---|---|---|---|
BAKKEN | 4-2016 | 30 | 2191 | 2116 | 2544 | 4085 | 3994 | 1 |
BAKKEN | 3-2016 | 31 | 2359 | 2480 | 2761 | 4583 | 4464 | 26 |
BAKKEN | 2-2016 | 29 | 2369 | 2408 | 2607 | 4936 | 4847 | 2 |
BAKKEN | 1-2016 | 23 | 2581 | 2482 | 3287 | 4081 | 3985 | 30 |
BAKKEN | 12-2015 | 31 | 2762 | 2877 | 3208 | 5571 | 4978 | 500 |
BAKKEN | 11-2015 | 30 | 2704 | 2668 | 3000 | 4728 | 2868 | 1772 |
BAKKEN | 10-2015 | 31 | 2674 | 2595 | 2890 | 3363 | 2764 | 507 |
BAKKEN | 9-2015 | 30 | 2525 | 2610 | 2753 | 2766 | 2296 | 387 |
BAKKEN | 8-2015 | 31 | 2754 | 2696 | 3078 | 3242 | 3103 | 5 |
Well #2 -- this is the newest well; it has just been fracked and has just started producing --
Pool | Date | Days | BBLS Oil | Runs | BBLS Water | MCF Prod | MCF Sold | Vent/Flare |
---|---|---|---|---|---|---|---|---|
BAKKEN | 4-2016 | 30 | 10048 | 9798 | 8851 | 13602 | 13048 | 468 |
BAKKEN | 3-2016 | 31 | 20441 | 20892 | 17039 | 30042 | 29308 | 642 |
BAKKEN | 2-2016 | 29 | 26883 | 26987 | 23702 | 44006 | 38007 | 5912 |
BAKKEN | 1-2016 | 30 | 22404 | 22030 | 31750 | 34998 | 14952 | 19957 |
BAKKEN | 12-2015 | 25 | 24622 | 24284 | 43010 | 36231 | 1428 | 34728 |
The "Index" well: this is the well that caught my attention. Why did oil production jump in January, 2016? And note the huge increase in water production at the same time. Where did that water come from? Look how much water was produced in just 19 days in December, 2015 -- not due to fracking this well. This well was fracked years ago.
Pool | Date | Days | BBLS Oil | Runs | BBLS Water | MCF Prod | MCF Sold | Vent/Flare |
---|---|---|---|---|---|---|---|---|
BAKKEN | 4-2016 | 30 | 7097 | 6942 | 7967 | 8285 | 8093 | 103 |
BAKKEN | 3-2016 | 31 | 8100 | 8456 | 10182 | 9529 | 9358 | 78 |
BAKKEN | 2-2016 | 29 | 6776 | 6560 | 11517 | 8000 | 7459 | 454 |
BAKKEN | 1-2016 | 30 | 6268 | 6319 | 21254 | 9237 | 4655 | 4496 |
BAKKEN | 12-2015 | 19 | 3254 | 3144 | 22383 | 3827 | 49 | 3724 |
BAKKEN | 11-2015 | 12 | 724 | 747 | 399 | 949 | 783 | 132 |
BAKKEN | 10-2015 | 31 | 2196 | 2109 | 1057 | 2525 | 2291 | 141 |
BAKKEN | 9-2015 | 30 | 1949 | 2095 | 1346 | 2334 | 1899 | 345 |
BAKKEN | 8-2015 | 31 | 2105 | 2075 | 1299 | 2637 | 2410 | 135 |
BAKKEN | 7-2015 | 31 | 2189 | 2173 | 971 | 2638 | 2422 | 123 |
BAKKEN | 6-2015 | 30 | 2129 | 2136 | 1232 | 2691 | 2273 | 328 |
BAKKEN | 5-2015 | 31 | 2333 | 2274 | 1275 | 3089 | 2680 | 317 |
BAKKEN | 4-2015 | 30 | 2337 | 2300 | 1733 | 2810 | 2275 | 446 |
BAKKEN | 3-2015 | 31 | 2420 | 2617 | 1621 | 3897 | 2260 | 1544 |
BAKKEN | 2-2015 | 28 | 2125 | 2069 | 1245 | 4162 | 2047 | 2033 |
BAKKEN | 1-2015 | 31 | 2498 | 2714 | 1668 | 4545 | 2359 | 2093 |
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Well #3:
- it appears the well was taken off line in mid-November, 2015, and placed back on line in mid-December, 2015
- when it came back on-line, there was no noticeable increase in oil production
- however, look at the huge increase in water, going from1,500 bbls in October to over 15,000 bbls in January, 2016
- it appears the well was taken off line in mid-November, 2015, and placed back on line in late-December, 2015
- when it came back on-line, there was a noticeable increase in oil production
- also, look at the huge increase in water, going from 2,000 bbls in October to almost 20,000 bbls in December, 2015, even though that well was on-line for less than a full month ("severe vomiting")
- unlike wells #3 and #4, this well was not taken off-line during this period of time
- during this period of time, there was no noticeable increase in oil production, month-over-month
- in addition, there was no evidence in any change in the amount of water produced
- this well was brought on-line in late December, 2015, after it was fracked earlier
- following the frack, huge oil production
- following the frack, huge water production
- it appears the well was taken off line in mid-November, 2015, and placed back on line in mid-December, 2015
- when it came back on-line, there was a huge increase in oil production
- in addition, look at the huge increase in water, going from1,000 bbls in October to over 22,000 bbls in January, 2016
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I called the "index well," the index well because it had the most noticeable increase in oil production after a neighboring well was fracked.Wells #1 and #3 were Three Forks wells.
Wells #2 and #4 were middle Bakken wells.
Summary:
1. Well #2 was a middle Bakken well, fracked in late 2015.
2. Wells #1 and #3 were Three Forks wells and did not show any evidence of the "halo effect" based on increased oil production. In addition, there was no evidence of communication based on produced water between the middle Bakken well (#2) and the Three Forks well #1 -- these two wells are 0.84 mile apart. However, there was evidence of communication based on water production between the middle Bakken well (#2) and the Three Forks well (#3). Wells #2 and #3 are laterally separated by about 265 feet. I assume the vertical separation is less than 100 feet.
3. The middle Bakken "index well" was 0.3 mile from the newly fracked well.
4. The middle Bakken well #4 was less than 800 feet from the newly fracked well.
The graphic:
I apologize for the confusing graphic. I've labeled the horizontals twice: once with the permit number and formation target; and, a second time with just a numeric label.
I labeled the horizontals, 1 through 4, left to right; perhaps I should have numbered them differently.
Calling one of the wells an index well may be confusing, but I called it that because it showed a definite halo effect. Once I saw the jump in oil production, I then looked for the likely explanation. The only possibility was the fracking of the neighboring well, which I call #2.
These are the wells:
- 18758, 714, Whiting, 20711 Paulso 49 1H, Stockyard Creek, t4/11; cum 230K 4/16;
- 23112, 1,657, Whiting, P Bibler 154-99-1-5-8-16H3, a Thee Forks well, t5/13; cum 180K 4/16;
- 24196, 2,251, Whiting, P Evans 154-99-2-4-9-15H3, a Three Forks well t8/13; cum 165K 4/16;
- 24198, 2,282, Whiting, P Evans 154-99-2-4-9-16H, t8/13; cum 199K 4/16;
- 30850, 2,015, Whiting, Marty 31-4H, Stockyard Creek, t12/15; cum 104K 4/16; API 33-105-04003-00-00; frack start 12/7/15; frack end 12/7/15; 7.6 million gallons of water; white sand frack, 9% by weight of total frack components (Frac Focus; data here at Frac Focus; 40 stages, 6.6 million lbs; the sundry form says the well was stimulated 11/18/2015.