Other Re-Entry Wells
- 16580, CLR, J. H. Skarphol 1-31H, Burke; Stoneview, re-entered the Bakken, 11/12; IP: 544, cum 97K 9/16; 320-acre spacing;
I had completely forgotten about. Then a reader, tonight, sent me a note about an MRO well that was refracked.
Here's my post tonight on that subject.
I opined not too long ago (I can't find the most recent post) that there are still debates whether re-fracks "will work" in the Bakken, and if so, how effective they will be. A reader sent in another example.
For background to this story:
- August 17, 2012: MRO and re-fracks/re-fracking
- December 18, 2011: re-fracking wells in the Bakken
- July 31, 2011: list of 25 MRO wells that might be candidates for re-fracking
16729, 348, MRO, Vihon 44-8H, this was a single-stage frack. MRO went in to re-frack and damaged the casing so the well was shut down for several months until they got it fixed; t11/07; cum 299K 9/16;
So, what's the story?
This well was originally spud and completed, as a one-stage frack, back in 2007.
It was subsequently re-fracked in 2011/2012, but ran into some difficulties before everything was "fixed."
Read the following production tables from bottom to top.
Following the one-stage frack, the well was spud/fracked with one stage back in November, 2011:
Then, the re-fracked the well, sometime around the re-frack in late 2011/early 2012; the results were not good; they had problems, sort of unrelated to the re-frack per se:
Once they got everything fixed:
When originally posted, the well was producing about 5,000 bo per month.
- 16729, 348, MRO, Vihon 44-8H, Bailey, t11/07; cum 299K 9/16;
- The most important is the fact that folks like me will never know about these re-fracked wells if folks don't share their stories.
- The second story is, of course, all the wells that might be candidates for re-fracking.
- A third story: the more success stories we have, the more "we" will know whether re-fracking is worthwhile or not. It certainly looks like it might be.
- A fourth story: this changes the decline rates significantly, doesn't it?
- A fifth story: did EURs factor in these re-fracks?
- 17216, 327, MRO, Alfred Hansen 24-11H, Bailey, t2/09; cum 124K 10/13;
I am absolutely thrilled. I had this well, the Alfred Hansen on my list of 25 candidates for re-fracking. This was re-fracked. I'm sure there were others. I just don't have time to go through them all.
There is a lot of talk of CO2 EOR right now, but folks, there's a lot of work to do before we get to EOR. To begin with, there are 60,000 (or more) wells that need to be drilled (at 2,000/year). And that's just the middle Bakken and upper Three Forks. Add in in the lower benches of the Three Forks. Then re-fracking all the early wells that were fracked with one stage. Then, work-over of those wells that were adequately fracked but have deteriorated for some reason. Yes, as a laboratory it's nice to see folks testing CO2 EOR and water flooding, but there's plenty of work to do before we get to that.