Sunday, December 22, 2013

Random Look At A Bakken Well Along The Canadian Border: The Zimmerman Well

Earlier I posted a note about an interesting re-entry well. A reader suggested I take a look at another well that has undergone some recent work.

Unfortunately the well file report does not shed any light on what is going on with this well.  It is interesting that on June 19, 2009, this spacing unit, Bakken pool only, qualified as "Stripper Well Property." The well produced from a depth greater than 10,000 feet and at a maximum efficient rate, with average daily production from the property 28.3 bopd. (I wondered about this issue back in 2007 when I first started blogging, but intentionally avoided the subject.)

This is an unusual well. It is a vertical well with two horizontal legs, one to the northeast, and one to the southeast. It is located up along the Canadian border.

I do not see any frack report. However, the initial production suggested at least one leg was fracked and the amount of water returned early on suggests at least one leg was fracked.

This is the well. The two arrows point to the two legs of this well:
  • 16207, 28, CLR, Zimmerman 1-13H, Border, t11/06; cum 58K 10/13;
This is the area under discussion. The red arrows point to the two horizontal wells.



It was a very, very unremarkable well. Until recently.

Note: the name of the well has not changed; it does not include the "R" suffix suggesting this is not a re-entry. Was it recently fracked for the first time? I don't know. Hopefully some reader might have some additional background.

The well has produced a cumulative of almost 60,000 bbls since it was drilled back in 2006 (remember, this was before the Parshall discovery in 2007 that marks the beginning of the current Bakken boom).  Note the production over the past few months:

PoolDateDaysBBLS OilRunsBBLS WaterMCF ProdMCF SoldVent/Flare
BAKKEN10-2013313996421043423175312946
BAKKEN9-201330127097262901041100041
BAKKEN8-2013203303820808
BAKKEN7-20130000000
BAKKEN6-201313100000
BAKKEN5-20132224630423325423222
BAKKEN4-20133034329433334831830
BAKKEN3-20133135642334034731631
BAKKEN2-201328311410258926527
BAKKEN1-20133137719040333031911
BAKKEN12-2012314194283953623620

The well was spud in August, 2006, with first production in November, 2006. This is the production history early on:

BAKKEN7-200731185417691770247202472
BAKKEN6-200730233424672174222302223
BAKKEN5-200722282426673460173601736
BAKKEN4-20070000000
BAKKEN3-2007161393131834278020802
BAKKEN2-2007130056952070207
BAKKEN1-2007223934467722022
BAKKEN12-200631551705583000
BAKKEN11-2006289946761684460446

My hunch: either one leg was fracked for the first time, or one or both legs were re-fracked. The big question is the one I avoided back in 2007 and that has to do with "stripper well status."

2 comments:

  1. The Zim - 1 to my understanding had a work over rig this year and a newly completed well targeting the middle bakken was completed in the same zone passing through the zones of the older well - if that makes sense

    ReplyDelete
    Replies
    1. A newly completed well --

      "Completed" often means fracking ... it sounds like they fracked one of the two existing horizontals....but beyond my understanding or comfort zone. I appreciate you taking time to write. The work over rig information is very helpful; supports my thesis thatwe are going to start seeing more work over rigs

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