Pages

Sunday, February 21, 2016

Random Look At Possible Halo Effect Between TFH And Middle Bakken Wells In The Truax Oil Field -- February 21, 2016

Take a look at the production profile of this well, #20518, drilled back in 2011, and then join me below the graphic for a discussion of this well. This well has been producing since September, 2011, but only production data since May, 2013, is shown. Look at the production jump in November and December, 2013 (a small jump) and the incredible jump in production in November, 2015.

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.

*******************************

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

PoolDateDaysBBLS OilRunsBBLS WaterMCF ProdMCF SoldVent/Flare
BAKKEN12-20153192169499597420221185641564
BAKKEN11-20153013109133031114828657266221945
BAKKEN10-2015521151685294933672502852
BAKKEN9-2015181490172894769016688159
BAKKEN8-20153128712854189712393111361164
BAKKEN7-2015313299337923401188811502293
BAKKEN6-2015151612149497439083593272
BAKKEN5-20153126442754158399914119489
BAKKEN4-201530247024681626754730944365
BAKKEN3-20153131393276258194489068287
BAKKEN2-20152824392491217584878129274
BAKKEN1-2015313413349220471127276213558
BAKKEN12-201431337832211732843569711371
BAKKEN11-20143030582922211995569210256
BAKKEN10-20143136333725282912601125080
BAKKEN9-20143032053056233692428765387
BAKKEN8-201431370039583096108911073860
BAKKEN7-201430393638222974102481009663
BAKKEN6-2014303578359730381028410006188
BAKKEN5-201431405742553093984585071245
BAKKEN4-201429393938592834756060251449
BAKKEN3-2014314799488936741054687041749
BAKKEN2-201428377637663154667048001787
BAKKEN1-201431411540133611807818876099
BAKKEN12-20133169976928705318766018673
BAKKEN11-201326563757421018313466013392
BAKKEN10-20130000000
BAKKEN9-20132826792363169285782308266
BAKKEN8-201331328833561595933639895254
BAKKEN7-2013313098317320427353716694
BAKKEN6-201330305635751252802459471988
BAKKEN5-201331354328321575917458793202

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.
So, perhaps the slight increase in production of the index well in late 2013 can be attributed to the halo effect of drilling #25512. Neat, huh?

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
Although #31238 is on the confidential list, some information was posted before the well was placed on the confidential list. The spacing unit for #31238 is .... get this ...  sections 2/11-154-98. That's right. Even though the well is on the confidential list, and even thought the horizontal is not yet shown on the GIS map server yet, the application for this well says the spacing unit is 2/11-154-98. This horizontal is going to go right "through" the index well horizontal. If you don't believe me, look at the plan:

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).

*******************************

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.
#25512, practically out of the picture was taken off-line for most of October/November, 2015, probably because these new TFH wells were being fracked. That speaks volumes. By the way, was there any jump in production in this well back in December, 2015. I don't know. Let's check:

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 Data

PoolDateDaysBBLS OilRunsBBLS WaterMCF ProdMCF SoldVent/Flare
BAKKEN12-2015316442659048741291212239580
BAKKEN11-20151213961278222615321208290
BAKKEN10-201532372063041251143
BAKKEN9-20151922862742151441663947165
BAKKEN8-20153140573788301182867700494
BAKKEN7-20153140774223245181357852191
BAKKEN6-201530433142363176102579201967

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.

Random Update Of Field Production For East Fork Oil Field In The North Dakota Bakken, October - December, 2015

Crude oil production increase was not quite as dramatic in East Fork oil field as in the Pershing oil field over the past three months, but it was enough to catch my attention. Note the percentage changes, month-over-month: November-over-October, 17%; and, December-over-November,  24%).

Field
Pool
October 2015 Production
Oct Wells
Oct Oil/Well/Month
November 2015 Production
Nov Wells
Nov Oil/Well/Month
Percent Change
December 2015 Production
Dec Wells
Dec  Oil/Well/Month
Percent Change
East Fork
Bakken
342,754
84
4,080
400,812
92
4,357
16.94
496,022
96
5,167
23.75%


Part of the reason, of course, was the increase in the number of producing wells, from 84 in October to 92 in November to 96 in December. Note the increase in production per well, from around 4,000 bbls/well/month in October, to over 5,000 bbls/well/month in December. It wasn't just the increase in the number of wells, but also the increase in productivity from the wells.

The East Fork oil field is tracked here. It appears that the new wells coming on line were permitted back in 2014. 

Again, whenever I work with numbers, and whenever I transcribe long lists of numbers I am prone to making mistakes. I have triple-checked the numbers above so I think they are correct.

A Case Study, Pershing Oil Field, North Dakota Bakken, October - December, 2015

This was previously posted -- a couple of days ago. I am only moving it here as a stand-alone post so I can refer to it in the future as a case study.


This came about when I noted the production profile coming out of the Pershing oil field in the North Dakota Bakken between October - December, 2015 (inclusive, those three months).


*************************************** 
A Case Study


This is an extraordinary bit of data. This post alone is worth the price of the subscription to the Million Dollar Way blog. There are several things I will point out from this case study, but I will have to do it later. I am on may way to watch some international water polo competition. But the data below is incredible. The Bakken never fails to surprise me. 





Look at the production profile of #17292, the index well, since September, 2012:

NDIC File No: 17292     API No: 33-053-02892-00-00     CTB No: 117292
Well Type: OG     Well Status: A     Status Date: 9/28/2008     Wellbore type: Horizontal
Location: SESW 33-150-96    Latitude: 47.761263     Longitude: -102.976969
Current Operator: BURLINGTON RESOURCES OIL & GAS COMPANY LP
Current Well Name: KIRKLAND 1-33H
Elevation(s): 2396 KB   2378 GL     Total Depth: 20249     Field: PERSHING
Spud Date(s):  7/22/2008
Completion Data
   Pool: BAKKEN     Perfs: 11485-20249     Comp: 9/28/2008     Status: F     Date: 10/3/2008     Spacing: 2SEC
Cumulative Production Data
   Pool: BAKKEN     Cum Oil: 135274     Cum MCF Gas: 152712     Cum Water: 35217
Production Test Data
   IP Test Date: 10/3/2008     Pool: BAKKEN     IP Oil: 765     IP MCF:     IP Water: 362
Monthly Production Data
PoolDateDaysBBLS OilRunsBBLS WaterMCF ProdMCF SoldVent/Flare
BAKKEN12-201531211342078458891748616597812
BAKKEN11-20151050485026771181217870
BAKKEN10-20151766047020938157720
BAKKEN9-2015206098973471144920175
BAKKEN8-20152310509203135890532
BAKKEN7-2015311268137631221617123
BAKKEN6-20152817531843508884193622
BAKKEN5-20152011829157304650415
BAKKEN4-20150000000
BAKKEN3-20150000000
BAKKEN2-20150000000
BAKKEN1-20151323123110327721530
BAKKEN12-2014308789662068597841
BAKKEN11-20143093211781838487730
BAKKEN10-20143199568919510049270
BAKKEN9-2014309071232231940419447
BAKKEN8-20143111371266264128801211
BAKKEN7-2014134800664330401
BAKKEN6-201430104011902485260451
BAKKEN5-201431121313182637700
BAKKEN4-20143012161348216108293969
BAKKEN3-20143112679453021169106923
BAKKEN2-20142813191330304112910590
BAKKEN1-2014301571158237369153681
BAKKEN12-20133116711934571126501188
BAKKEN11-20131914391178512157801530
BAKKEN10-20130000000
BAKKEN9-20130000000
BAKKEN8-20130000000
BAKKEN7-20130000000
BAKKEN6-201337001609
BAKKEN5-2013281001100105
BAKKEN4-20130000000
BAKKEN3-20130000000
BAKKEN2-20130000000
BAKKEN1-20130000000
BAKKEN12-20120000000
BAKKEN11-2012206184821321313122043
BAKKEN10-20123110041096220204119640
BAKKEN9-2012301124107123119021453


First twelve months of production, of the index well, #17292:

BAKKEN9-20093018521991403297529750
BAKKEN8-20093119581946430130613060
BAKKEN7-200931207219074506786780
BAKKEN6-20093020912477446356335630
BAKKEN5-20093123862043494367336730
BAKKEN4-20093024832600593397839780
BAKKEN3-20093128622833595478947890
BAKKEN2-20092828743216685552755270
BAKKEN1-20093143934217933761476140
BAKKEN12-20082629593077774167416740
BAKKEN11-20083048054457948655265520
BAKKEN10-20083110289101523262812581250
BAKKEN9-200836824881950000

****************************
****************************

NDIC File No: 29796     API No: 33-053-06404-00-00     CTB No: 229795
Well Type: OG     Well Status: A     Status Date: 12/9/2015     Wellbore type: Horizontal
Location: SESW 21-150-96     Footages: 595 FSL 1457 FWL     Latitude: 47.791356     Longitude: -102.977879
Current Operator: BURLINGTON RESOURCES OIL & GAS COMPANY LP
Current Well Name: KIRKLAND 24-21MBH
Elevation(s): 2359 KB   2332 GR   2337 GL     Total Depth: 21647     Field: PERSHING
Spud Date(s):  3/20/2015
Casing String(s): 9.625" 2074'   7" 11120'  
Completion Data
   Pool: BAKKEN     Perfs: 11120-21647     Comp: 12/9/2015     Status: F     Date: 12/11/2015     Spacing: 4SEC
Cumulative Production Data
   Pool: BAKKEN     Cum Oil: 15802     Cum MCF Gas: 30394     Cum Water: 8661
Production Test Data
   IP Test Date: 12/11/2015     Pool: BAKKEN     IP Oil: 1723     IP MCF: 2376     IP Water: 481
Monthly Production Data
PoolDateDaysBBLS OilRunsBBLS WaterMCF ProdMCF SoldVent/Flare
BAKKEN12-20152115802155438661303941597814392
BAKKEN11-20150000000
This well (33-053-06404) was fracked 11/12/2015 - 11/14/2015 with 2,823,912 gallons of water and
and around 17% proppant by weight (white sand, 10.4%; mullite, 3.8%, other silica, 3%).

************************************
29804:

NDIC File No: 29804     API No: 33-053-06408-00-00     CTB No: 229795
Well Type: OG     Well Status: A     Status Date: 11/6/2015     Wellbore type: Horizontal
Location: SWSW 21-150-96       Latitude: 47.791971     Longitude: -102.981525
Current Operator: BURLINGTON RESOURCES OIL & GAS COMPANY LP
Current Well Name: KIRKLAND 14-21MBH
Elevation(s): 2330 KB   2303 GR   2301 GL     Total Depth: 21968     Field: PERSHING
Spud Date(s):  4/30/2015
Completion Data
   Pool: BAKKEN     Perfs: 11189-21968     Comp: 11/6/2015     Status: F     Date: 11/9/2015     Spacing: 4SEC
Cumulative Production Data
   Pool: BAKKEN     Cum Oil: 14901     Cum MCF Gas: 25622     Cum Water: 7423
Production Test Data
   IP Test Date: 11/9/2015     Pool: BAKKEN     IP Oil: 2806     IP MCF: 4560     IP Water: 1243
Monthly Production Data
PoolDateDaysBBLS OilRunsBBLS WaterMCF ProdMCF SoldVent/Flare
BAKKEN12-201536355779811884181170
BAKKEN11-2015251426614266644223738023711

This well was fracked  9/23/2015 to 9/25/2015, with 2,822,064 gallons of water, and 20% proppant by weight (silica, 11%; mullite, 4.7%; other silica 2.8%, and aluminu silicate, 4.7%)

*********************************** 
29867:

NDIC File No: 29867     API No: 33-053-06421-00-00     CTB No: 229795
Well Type: OG     Well Status: A     Status Date: 10/26/2015     Wellbore type: Horizontal
Location: SWSW 21-150-96      Latitude: 47.791972     Longitude: -102.981709
Current Operator: BURLINGTON RESOURCES OIL & GAS COMPANY LP
Current Well Name: KIRKLAND 14-21TFH ULW
Elevation(s): 2330 KB   2303 GR   2301 GL     Total Depth: 21280     Field: PERSHING
Spud Date(s):  5/1/2015
Completion Data
   Pool: BAKKEN     Perfs: 11267-21280     Comp: 10/26/2015     Status: F     Date: 10/28/2015     Spacing: 4SEC
Cumulative Production Data
   Pool: BAKKEN     Cum Oil: 14627     Cum MCF Gas: 23666     Cum Water: 6973
Production Test Data
   IP Test Date: 10/28/2015     Pool: BAKKEN     IP Oil: 3126     IP MCF: 5064     IP Water: 1323
Monthly Production Data
PoolDateDaysBBLS OilRunsBBLS WaterMCF ProdMCF SoldVent/Flare
BAKKEN12-201525865332169479450
BAKKEN11-20150000000
BAKKEN10-201581404114041675722719022699

This well was fracked 10/2/2015 t0 10/9/2015, with 5,215,308 gallons of water, and 14% proppant by weight (silica, 13%; mullite, 1.7%; and corundum and aluminum silicate, 1.7%).


****************************

22792:

NDIC File No: 22792     API No: 33-053-04093-00-00     CTB No: 222789
Well Type: OG     Well Status: A     Status Date: 12/22/2012     Wellbore type: Horizontal
Location: NENW 28-150-96     Footages: 956 FNL 2383 FWL     Latitude: 47.787088     Longitude: -102.974098
Current Operator: BURLINGTON RESOURCES OIL & GAS COMPANY LP
Current Well Name: KIRKLAND 21-28TFH 3SH
Elevation(s): 2309 KB   2293 GR   2293 GL     Total Depth: 20160     Field: PERSHING
Spud Date(s):  10/3/2012
Casing String(s): 9.625" 1835'   7" 11189'  
Completion Data
   Pool: BAKKEN     Perfs: 11189-20160     Comp: 12/22/2012     Status: AL     Date: 7/17/2014     Spacing: 4SEC
Cumulative Production Data
   Pool: BAKKEN     Cum Oil: 186580     Cum MCF Gas: 227475     Cum Water: 69086
Production Test Data
   IP Test Date: 1/6/2013     Pool: BAKKEN     IP Oil: 2926     IP MCF: 1660     IP Water: 350
Monthly Production Data; most recent production:

PoolDateDaysBBLS OilRunsBBLS WaterMCF ProdMCF SoldVent/Flare
BAKKEN12-201531121001237577891097858555011
BAKKEN11-2015253604674282164466089351
BAKKEN10-201519126515053298928270
BAKKEN9-2015192083208767336533035559
BAKKEN8-201531424342561454600716214289
BAKKEN7-201531479746511271363818391701
BAKKEN6-2015302892267258042602843882
BAKKEN5-2015107841192329756459267
BAKKEN4-20153037273715114383337959273
BAKKEN3-201531463945011178474016942947

22792, first 12 months of production:

BAKKEN12-2013163077328102731252704
BAKKEN11-20133064506287721189011556329
BAKKEN10-20133191659089014664134081256
BAKKEN9-201330132001319433581992919740190
BAKKEN8-201353424311581149744759216
BAKKEN7-2013003660000
BAKKEN6-201327140071374635451999419229765
BAKKEN5-2013312427824335760237190304476743
BAKKEN4-20132227632730461220331187
BAKKEN3-201331000400
BAKKEN2-201328000400
BAKKEN1-20132826842555219809908095