Devon and the Ashland, Medina Counties wells.

The areas that Devon has recently drilled in Ashland and Medina Counties, and now stating their results disappointing, were not those areas mapped as "immature" in the initial, if you will, ODNR mapping?

So, Devon is not really disappointed in their drilling so much as they are in taking the chance that maybe those ODNR maps may have been wrong?   Maybe they had their hopes a little too high?

I realize that's a very simple outlook, but could that be the crux of it?  Yes?  No?

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Replies to This Discussion

Permalink Reply by Nate on August 17, 2012 at 5:50am
The ashland well makes 2 bbl/day of oil. Thats disappointing no matter the cost of the well
0i7okn54zwbdoPermalink Reply by 0i7okn54zwbdo on August 17, 2012 at 11:19am

It's not porosity or permeability that hurt these wells, it's the lack of pressure in the structure.  No gas pushing the liquids means no liquids.  A CO2 injection would likely stimulate the wells enough to produce them, but that's a temporary fix.  

Permalink Reply by Utica watch on August 17, 2012 at 1:14pm

Well then why are they going to make the Harstine core well an injection well?

0i7okn54zwbdoPermalink Reply by 0i7okn54zwbdo on August 17, 2012 at 1:46pm

Because it's half drilled, so why not.  Taking a cored well and using it for injection has nothing to do with the ability of other wells to perform (or in this case not perform).  They are separate entities.  

Permalink Reply by Utica watch on August 17, 2012 at 1:59pm

Sorry for not understanding but if the core well was so good with good permeability and thickness why not produce it?  Thanks for responding.

0i7okn54zwbdoPermalink Reply by 0i7okn54zwbdo on August 18, 2012 at 1:08pm

A core can show you valuable things, like porosity, permeability and TOC.  What it cannot replicate is downhole pressure and the ability of said pressure to lift the liquids.  So all of the indicators from the core look good, but the pressure is what's keeping that oil right where it has always been.  You don't know how a well is going to respond until you drill it, frack it and put it into production.  

The fact that they're planning to use it as a SWIW tells me two things: 1.) they have waste water that they want to get rid of, possibly from their future ventures and 2.) the Sensibaugh well was not good, as it is considered an off-set of the Harstine core.

0i7okn54zwbdoPermalink Reply by 0i7okn54zwbdo on August 19, 2012 at 2:25pm

Well then answer #1 fits.  Eventually there are going to have to be a bunch of these SWIW throughout the play.

0i7okn54zwbdoPermalink Reply by 0i7okn54zwbdo on August 20, 2012 at 2:07pm

I had not heard that.  I think it would be too early to pull out entirely from a few steep declines.  People don't realize this but it takes many, many wells before a play can be accurately assessed, especially the decline.  I'll dig into it and see what I can find.

0i7okn54zwbdoPermalink Reply by 0i7okn54zwbdo on August 22, 2012 at 6:27am

I'm puzzled by the activity of Knox and Oxford.  They can't possibly make any money drilling Clinton wells in this market.  Just drilling to HBP is difficult for even the most well-capitalized companies, and those players are not nearly big enough to waste the up front cash today.  So the answer to your question is "I have no bloody idea why they're doing that".  

Permalink Reply by mbc on August 23, 2012 at 5:08am

Reading through this discussion, and being that I know very little about this industry, I am left with the impression that for the two areas drilled in Ashland and Medina Counties, which were labeled in the immature zone, that it's not so much that it's immature oil or that it's not there, it's the pressure issue in bringing it to the surface.

Could one assume that if the issue were maturity, the pressure comes as it matures?  Or, is that neither here nor there?

Even though I'm asking maturity questions, to reiterate - I'm concluding from y'all's thoughts that Devon likes the look of their find, but it's a major chore bringing it to the surface.

And thanks to everyone for puttin' you thoughts and knowledge out there for us!

Permalink Reply by Jim on August 18, 2012 at 12:20am

The well summary card for this well has the Black River formation listed on top of the Utica Shale when it should be listed below the Trenton Limestone.  Is this just an error on the Well Summary card or did Devon not drill into the correct formation?  Other wells in Clear Creek Twp have the Black River below the Trenton.  What information was the rig operator using?

0i7okn54zwbdoPermalink Reply by 0i7okn54zwbdo on August 18, 2012 at 1:05pm

I noticed that too.  It must have been a typo.  The Black River underlies the Trenton, which is below the Utica/point Pleasant.

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