Sunday, February 5, 2017

Random Notes On Two Wells In The Williston Basin; Happy Birthday To Kate Hopkins #1 -- 60 Years Old; 53 Years Since It Was Initially Fracked -- February 5, 2017

A reader alerted me to this well, for various reasons:
  • 25093, 745, EOG, Wayzetta 150-1509H, Parshall, 52 stages, 14.3 million lbs, t8/13; cum 662K 12/16; just an incredible well, still producing about 6,000 bbls of oil per month, along with 12,000 MCF natural gas / month (2,000 boe). Who wudda guessed that a non-descript middle Bakken well would have produced over 600,000 bbls in just 3.5 years? And as as early as 2013, EOG was using 14 million lbs of sand, and 50+ stages. Truly amazing. 
That's a "baby well," only three or four years old. 

Now an oldie, a "senior well," celebrating its 60th year; fracked 53 years ago:
  • 1509, 248, CLR, Kate Hopkins 1, Antelope field, target, the Sanish oil pool; t12/57; cum 594K 12/16; this well was drilled in 1957. Then in 1964, a sundry form reported the operator planned to "fracture this well using 10,000 gallons of gelled water and 3,000 pounds of glass beads." (The original intent was to use 3,000 pounds of glass beads; but the work report said that 10,000 pounds of glass beads were used.)
So, there you have it, they've been "fracking the Bakken" since at least 1964.

I've been following this well almost from the beginning of the blog. A few years ago I noted (and blogged) that production was dropping  more and more every month, down to less than 20 bbls/month.

Now all of a sudden, a noticeable increase; no sundry form in the file report to suggest why.

Recent production profile:
Monthly Production Data:

PoolDateDaysBBLS OilRunsBBLS WaterMCF ProdMCF SoldVent/Flare
SANISH12-201622200003100228
SANISH11-20163031038604570328
SANISH10-20163128920903990285
SANISH9-20163000909
SANISH8-2016141300119054
SANISH7-201610170077012
SANISH6-2016301500129199
SANISH5-201631200231093
SANISH4-2016380035011
SANISH3-2016517004109
SANISH2-2016731005600
SANISH1-201651921903200
SANISH12-2015622005608
SANISH11-2015380027011


This well was shut in from December, 1997, to March, 2000 (over two years). 

What did the production profile look like back in June, 1964, when they fracked the well with 10,000 lbs of water and a similar amount of glass beads?

Fracked on/about June 22, 1964:
SANISH11-196423289900263500
SANISH10-196429367700487500
SANISH9-196430400100529600
SANISH8-196429435300529600
SANISH7-196424399400469900
SANISH6-196430276700399800
SANISH5-196423191500285000
SANISH4-196426203800283000
SANISH3-196431235000252600
SANISH2-196429217500248800
SANISH1-196431251400323600
SANISH12-196330249900315400
SANISH11-196324217400270600
SANISH10-196329246300337200
SANISH9-196330247100344600
SANISH8-196331263600402400
SANISH7-196329273300284800
SANISH6-196314152900195000
SANISH5-196327262600316400
SANISH4-196330275800323600
SANISH3-196325251300298200

It's hard to say that fracking made that much of a difference. Perhaps flattened out the decline rate.

This is what the first few months of this well looked liked:
SANISH8-195826467200000
SANISH7-195826468100000
SANISH6-195826455500000
SANISH5-195817298600000
SANISH4-195825383000000
SANISH3-195820341700000
SANISH2-195823429400000
SANISH1-195824475500000
SANISH12-195716253800000

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