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Title : Random Update Of An Old EOG Short Lateral In Parshall Oil Field -- March 30, 2018
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Random Update Of An Old EOG Short Lateral In Parshall Oil Field -- March 30, 2018

For newbies: Some folks keep talking about newer wells in the Bakken affecting older wells in a negative manner. That's possible. I don't know. I just see a lot of these examples, where there is a jump in production in an older well when neighboring wells are fracked.

In the production profile below, between early 2015 and early 2013, just two years:

• a jump in production from 2,000 bbls/month to 7,000 bbls/month, November, 2013
• a jump in production from 5,000 bbls/month to 8,000 bbls/month in October, 2014

Not only is there a jump in production for a month or two, but the affect lasts several month, extending the period in which there is higher production, affecting a) the decline rate; and, b) the EUR.

Note: prior to neighboring wells being fracked, this well (#16543) was down to 2,000 bbls/month, arguably a very mediocre well. That was back in March, 2013. After neighboring wells were completed, not only was their significant jump in production on two occasions, but the baseline production was up to 4,000 bbls/month.

A Bakken trope/meme (I don't know if it's a myth): new wells will result in less production from older wells. Example after example proves this is not the case.


The well, a single section EOG well in Parshall oil field:

• 16543, 1,015, EOG, Florence 1-04H, Parshall, t7/07; cum 511K 1/18

Earlier production:

BAKKEN	2-2015	28	3754	3763	693	1266	0	1038
BAKKEN	1-2015	31	4689	4700	814	1579	0	1327
BAKKEN	12-2014	31	5663	5686	1287	1830	0	1586
BAKKEN	11-2014	30	7025	7046	1697	2202	259	1699
BAKKEN	10-2014	31	8062	8061	2313	2535	0	2283
BAKKEN	9-2014	30	7789	7769	2719	2475	0	2231
BAKKEN	8-2014	4	290	184	720	51	0	35
BAKKEN	7-2014	1	5	0	23	3	0	0
BAKKEN	6-2014	0	0	0	0	0	0	0
BAKKEN	5-2014	0	0	0	0	0	0	0
BAKKEN	4-2014	0	0	0	0	0	0	0
BAKKEN	3-2014	13	2287	2297	352	735	0	670
BAKKEN	2-2014	28	4986	4986	1393	1666	12	1514
BAKKEN	1-2014	30	6501	6538	1448	2104	1176	778
BAKKEN	12-2013	23	5972	5955	1019	1918	1502	306
BAKKEN	11-2013	30	7232	7480	2177	3578	3428	0
BAKKEN	10-2013	4	492	234	650	231	211	0
BAKKEN	9-2013	0	0	0	0	0	0	0
BAKKEN	8-2013	19	1532	1506	470	870	778	0
BAKKEN	7-2013	28	2260	2270	572	1387	1247	0
BAKKEN	6-2013	26	1608	1735	484	1041	916	0
BAKKEN	5-2013	31	2180	2046	456	1221	1066	0
BAKKEN	4-2013	30	1997	1997	503	0	0	0
BAKKEN	3-2013	31	2081	2081	484	1209	1054	0
BAKKEN	2-2013	28	1769	1849	439	1194	1054	0

The neighboring wells and the test dates of those wells:

• 25254, EOG, t11/13;
• 27042, EOG, t8/14; 

Remember, the index well is a short lateral. Had this been a long lateral, one can argue that total production would have been double what we see here.

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