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:

Pool	Date	Days	BBLS Oil	Runs	BBLS Water	MCF Prod	MCF Sold	Vent/Flare
BAKKEN	5-2019	31	9778	9858	14119	21154	20844	0
BAKKEN	4-2019	30	11216	11514	17030	23058	22758	0
BAKKEN	3-2019	31	11656	11739	17383	20476	20166	310
BAKKEN	2-2019	28	11999	11795	17142	17385	17105	0
BAKKEN	1-2019	31	10797	11124	19392	15496	15186	0
BAKKEN	12-2018	31	10422	10465	19131	12272	11962	0
BAKKEN	11-2018	30	10455	10658	23699	10424	10124	0
BAKKEN	10-2018	31	7957	7449	29550	8570	8260	0
BAKKEN	9-2018	14	2278	2067	14725	2440	2300	0
BAKKEN	8-2018	31	3851	3867	26272	3434	3124	0
BAKKEN	7-2018	15	1550	936	17931	1074	924	0
BAKKEN	6-2018	0	0	0	0	0	0	0
BAKKEN	5-2018	0	0	0	0	0	0	0
BAKKEN	4-2018	23	1185	1462	387	815	0	585