To the best of my knowledge, nothing was done to this particular well to account for the jump in production in either time period. The discussion will continue below the production profile.
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NDIC File No: 20518 API No: 33-105-02152-00-00 CTB No: 120518
Well Type: OG Well Status: A Status Date: 9/29/2011 Wellbore type: Horizontal
Location: NESE 11-154-98 Latitude: 48.173327 Longitude: -103.238712
Current Operator: WHITING OIL AND GAS CORPORATION
Current Well Name: REIGER 9-11H
Elevation(s): 2350 KB 2328 GR 2332 GL Total Depth: 19080 Field: TRUAX
Spud Date(s): 6/26/2011
Completion Data
Pool: BAKKEN Perfs: 11427-19080 Comp: 9/29/2011 Status: AL Date: 4/9/2012 Spacing: 2SEC
Cumulative Production Data
Pool: BAKKEN Cum Oil: 253028 Cum MCF Gas: 599337 Cum Water: 153164
Production Test Data
IP Test Date: 10/9/2011 Pool: BAKKEN IP Oil: 1067 IP MCF: 2160 IP Water: 485
Monthly Production Data
Pool | Date | Days | BBLS Oil | Runs | BBLS Water | MCF Prod | MCF Sold | Vent/Flare |
---|---|---|---|---|---|---|---|---|
BAKKEN | 12-2015 | 31 | 9216 | 9499 | 5974 | 20221 | 18564 | 1564 |
BAKKEN | 11-2015 | 30 | 13109 | 13303 | 11148 | 28657 | 26622 | 1945 |
BAKKEN | 10-2015 | 5 | 2115 | 1685 | 2949 | 3367 | 2502 | 852 |
BAKKEN | 9-2015 | 18 | 1490 | 1728 | 947 | 6901 | 6688 | 159 |
BAKKEN | 8-2015 | 31 | 2871 | 2854 | 1897 | 12393 | 11136 | 1164 |
BAKKEN | 7-2015 | 31 | 3299 | 3379 | 2340 | 11888 | 11502 | 293 |
BAKKEN | 6-2015 | 15 | 1612 | 1494 | 974 | 3908 | 3593 | 272 |
BAKKEN | 5-2015 | 31 | 2644 | 2754 | 1583 | 9991 | 411 | 9489 |
BAKKEN | 4-2015 | 30 | 2470 | 2468 | 1626 | 7547 | 3094 | 4365 |
BAKKEN | 3-2015 | 31 | 3139 | 3276 | 2581 | 9448 | 9068 | 287 |
BAKKEN | 2-2015 | 28 | 2439 | 2491 | 2175 | 8487 | 8129 | 274 |
BAKKEN | 1-2015 | 31 | 3413 | 3492 | 2047 | 11272 | 7621 | 3558 |
BAKKEN | 12-2014 | 31 | 3378 | 3221 | 1732 | 8435 | 6971 | 1371 |
BAKKEN | 11-2014 | 30 | 3058 | 2922 | 2119 | 9556 | 9210 | 256 |
BAKKEN | 10-2014 | 31 | 3633 | 3725 | 2829 | 12601 | 12508 | 0 |
BAKKEN | 9-2014 | 30 | 3205 | 3056 | 2336 | 9242 | 8765 | 387 |
BAKKEN | 8-2014 | 31 | 3700 | 3958 | 3096 | 10891 | 10738 | 60 |
BAKKEN | 7-2014 | 30 | 3936 | 3822 | 2974 | 10248 | 10096 | 63 |
BAKKEN | 6-2014 | 30 | 3578 | 3597 | 3038 | 10284 | 10006 | 188 |
BAKKEN | 5-2014 | 31 | 4057 | 4255 | 3093 | 9845 | 8507 | 1245 |
BAKKEN | 4-2014 | 29 | 3939 | 3859 | 2834 | 7560 | 6025 | 1449 |
BAKKEN | 3-2014 | 31 | 4799 | 4889 | 3674 | 10546 | 8704 | 1749 |
BAKKEN | 2-2014 | 28 | 3776 | 3766 | 3154 | 6670 | 4800 | 1787 |
BAKKEN | 1-2014 | 31 | 4115 | 4013 | 3611 | 8078 | 1887 | 6099 |
BAKKEN | 12-2013 | 31 | 6997 | 6928 | 7053 | 18766 | 0 | 18673 |
BAKKEN | 11-2013 | 26 | 5637 | 5742 | 10183 | 13466 | 0 | 13392 |
BAKKEN | 10-2013 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
BAKKEN | 9-2013 | 28 | 2679 | 2363 | 1692 | 8578 | 230 | 8266 |
BAKKEN | 8-2013 | 31 | 3288 | 3356 | 1595 | 9336 | 3989 | 5254 |
BAKKEN | 7-2013 | 31 | 3098 | 3173 | 2042 | 7353 | 7166 | 94 |
BAKKEN | 6-2013 | 30 | 3056 | 3575 | 1252 | 8024 | 5947 | 1988 |
BAKKEN | 5-2013 | 31 | 3543 | 2832 | 1575 | 9174 | 5879 | 3202 |
If nothing was done specifically to a well to increase its production, one must look at neighboring activity.
Here's the graphic of the area under discussion. To get oriented, the index well under discussion is #20518. Note #25512.
#25512 was fracked in October 16 - November 2, 2013:
- 25512, 2,154, Whiting, P Evitt 154-98-13-12-2-4H, 35 stages, 4.7 million lbs sand; t11/13; cum 182K 12/15; this will be important later: note this well was taken off-line for most of October and November, 2015. Hold that thought.
It gets better.
Now, look at the production profile of the index well again, noting the jump in production from about 3,000 bbls of oil/month (July, 2015) to a dramatic jump to more than 13,000 bbls of oil/month (November, 2015).
Looking at the graphic above, there is no obvious reason. There are no horizontals near the index well that could explain this increase in production.
Look at the area in the lower left-hand corner where I noted a fair amount of activity. There is a rig on site, most of the sites are still permitted only (status: loc), and the others are confidential. But here's where the new rules on DUCs and the rules on confidentiality help us out.
It turns out that #31238 is the answer. This is so cool.
- 31238, conf, Whiting, Carscallen 31-14-3TFH, API 33-105-04047, fracked 9/22/15 - 10/5/15;
But it gets even better --- not only will we frack #25512 next to your existing well, but we will frack #31238 that runs right through your existing well, and if you are patient, we will frack another well, paralleling #31238 (see diagram which I did not go through the effort to notate; the point is being made):
It looks like the two new wells running south-to-north are TFH wells.
If that's accurate (and it is), think about this. The index well is a middle Bakken well.
It appears #31238 which has already been fracked and probably accounts for the jump in production of the index well (#25512) is a TFH well. The target is the TFH, first bench, at 11,133 feet.
Let's look at the depth of the index well. This should be fun. According to one sundry form (the stimulation form) the vertical depth of the middle Bakken at this location was 11,112 feet. The total vertical depth was 11,147 feet. Maybe someone can provide better numbers but the vertical separation will be less than 40 feet, as far as I can tell (this is way beyond my comfort level; I could be way wrong on this, but various forms confirm this).
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I remember all those discussions early on (back in 2010, I suppose) about whether the middle Bakken and the Three Forks communicate, and later, all those discussions about whether there was such a thing as a halo effect between neighboring wells targeting the same formation. Later, there were discussions about the halo effect between neighboring wells targeting different formations.
I guess I will leave it at that. I think I've provided enough information to at least get started on all this.
Oh, I almost forgot. Remember this from above:
- 25512, 2,154, Whiting, P Evitt 154-98-13-12-2-4H, 35 stages, 4.7 million lbs sand; t11/13; cum 182K 12/15; this will be important later: note this well was taken off-line for most of October and November, 2015. Hold that thought.
NDIC File No: 25512 API No: 33-105-03063-00-00 CTB No: 125512
Well Type: OG Well Status: A Status Date: 11/6/2013 Wellbore type: Horizontal
Location: SWSW 12-154-98 Latitude: 48.169929 Longitude: -103.232662
Current Operator: WHITING OIL AND GAS CORPORATION
Current Well Name: P EVITT 154-98-13-12-2-4H
Elevation(s): 2332 KB 2304 GR 2304 GL Total Depth: 22300 Field: TRUAX
Spud Date(s): 6/2/2013
Completion Data
Pool: BAKKEN Perfs: 11638-22177 Comp: 11/6/2013 Status: AL Date: 6/25/2014 Spacing: 4SEC
Cumulative Production Data
Pool: BAKKEN Cum Oil: 181771 Cum MCF Gas: 406998 Cum Water: 109043
Production Test Data
IP Test Date: 11/9/2013 Pool: BAKKEN IP Oil: 2154 IP MCF: 4432 IP Water: 1496
Monthly Production DataWell Type: OG Well Status: A Status Date: 11/6/2013 Wellbore type: Horizontal
Location: SWSW 12-154-98 Latitude: 48.169929 Longitude: -103.232662
Current Operator: WHITING OIL AND GAS CORPORATION
Current Well Name: P EVITT 154-98-13-12-2-4H
Elevation(s): 2332 KB 2304 GR 2304 GL Total Depth: 22300 Field: TRUAX
Spud Date(s): 6/2/2013
Completion Data
Pool: BAKKEN Perfs: 11638-22177 Comp: 11/6/2013 Status: AL Date: 6/25/2014 Spacing: 4SEC
Cumulative Production Data
Pool: BAKKEN Cum Oil: 181771 Cum MCF Gas: 406998 Cum Water: 109043
Production Test Data
IP Test Date: 11/9/2013 Pool: BAKKEN IP Oil: 2154 IP MCF: 4432 IP Water: 1496
Pool | Date | Days | BBLS Oil | Runs | BBLS Water | MCF Prod | MCF Sold | Vent/Flare |
---|---|---|---|---|---|---|---|---|
BAKKEN | 12-2015 | 31 | 6442 | 6590 | 4874 | 12912 | 12239 | 580 |
BAKKEN | 11-2015 | 12 | 1396 | 1278 | 2226 | 1532 | 1208 | 290 |
BAKKEN | 10-2015 | 3 | 237 | 206 | 304 | 125 | 114 | 3 |
BAKKEN | 9-2015 | 19 | 2286 | 2742 | 1514 | 4166 | 3947 | 165 |
BAKKEN | 8-2015 | 31 | 4057 | 3788 | 3011 | 8286 | 7700 | 494 |
BAKKEN | 7-2015 | 31 | 4077 | 4223 | 2451 | 8135 | 7852 | 191 |
BAKKEN | 6-2015 | 30 | 4331 | 4236 | 3176 | 10257 | 9201 | 967 |
It's subtle. I think it's there, from 4,000 bbls to 6,500 bbls, but it will be short term, not amount to much, but it helps make up for the time the well had to be taken off line.
One last comment with regard to communication between the middle Bakken and the Three Forks. Look at the jump in water produced in the index well in November/December, 2015. That was most likely fracking water from the TFH well. I could be wrong, but ....
... the Saudis are looking at this very, very closely. I bet.
Disclaimer: in a long note like this there will be typographical and factual errors. I will see things that may not exist. I do not have formal training and no background in the oil and gas industry. This is for my use only to help me understand the Bakken. Don't quote me on any of this. If this information is important to you, go to the sources, the NDIC, and FracFocus.
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