Saturday, July 27, 2019

Jump In Production, An Old Oasis Crane Federal Well -- July 27, 2019

Updates

Later, 7:29 p.m. CT: immediately after posting the data below I got this note from a reader who really, really follows the Bakken very, very closely and sees so much that I miss. This note will be very interesting over time ... not sure how to save this note so as not to lose it in all the clutter -- I'll worry about that later / solve the problem later. But for now, here's the note/observation from the reader:

That production profile from #21903 (see below) seems to be very significant, but I do not know what to make of it regarding, specifically, the big surge in gas production.
Looking at the high, relatively flat oil production, one might deduce this is another example of a 'recharging' of the formation pressure via 'halo' from nearby frac or ... something else.
The highly elevated produced water levels show water was injected for some purpose, somewhere. Interestingly, the flat level of produced water implies some type of controlled flowback over several months. This, if accurate, would be in line with the restricted production practice (choking) so as to maintain elevated, induced formation pressure.
Not sure and, as you say, don't wish to get ahead of my headlights.
Biggest curiousity, however, is the significant 'spread' in the amount of produced gas versus produced oil. It is a LARGE change in proportionality. Going WAY out on a speculative limb here, but I wonder if newly opened, ultra, ultra tiny fissures (pore throats, specifically) are being blocked by the larger asphaltene molecules.
So little data is available to monitor this, but ongoing evidence for some time has implied a lot of the oil left behind is, indeed, the larger, more viscous molecules. If this is correct (big 'if', for sure), then miscible type EOR could prove especially effective as the remaining hydrocarbons would respond favorably by 'thinning'.
Original Post
 
The well:
  • 21903, 873, Oasis, Crane Federal 5300 41-26H, API: 33-105-02455, not re-fracked; t5/12; cum 366K 5/19;
Recent production:
PoolDateDaysBBLS OilRunsBBLS WaterMCF ProdMCF SoldVent/Flare
BAKKEN5-201931977898581411921154208440
BAKKEN4-20193011216115141703023058227580
BAKKEN3-2019311165611739173832047620166310
BAKKEN2-20192811999117951714217385171050
BAKKEN1-20193110797111241939215496151860
BAKKEN12-20183110422104651913112272119620
BAKKEN11-20183010455106582369910424101240
BAKKEN10-2018317957744929550857082600
BAKKEN9-2018142278206714725244023000
BAKKEN8-2018313851386726272343431240
BAKKEN7-20181515509361793110749240
BAKKEN6-20180000000
BAKKEN5-20180000000
BAKKEN4-201823118514623878150585

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