Horizontal Clinton well in Coshocton County, ohio

Enervest has a permit (API34031259210100) to plug back a vertical well (API34031259210000) and drill a horizontal in the Clinton formation on a parcel in Coshocton county. The x and y axis as well as the latitude is different for the two permits. Are these considered to be the same well since the first 10 digits ODNR the permit numbers are the same?

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Permalink Reply by James Vanderink on November 17, 2013 at 7:43am
It's not Enervest. It's is NGO.
Permalink Reply by Kathi Albertson on November 17, 2013 at 7:47am
That's right. My mistake. But the question remains, is it considered to be one well?
Permalink Reply by James Foster on November 17, 2013 at 9:45am

For ODNR purposes there are technically two wells. On the pad the driller plugs the bottom of the vertical well then uses the vertical kicks off laterally and drills the lateral. Every horizontal well has a corresponding vertical. Originally they were all on the Utica or Marcellus updates but too many wells so they leave vertical well off list. It is still on file at ODNR . The numbers are related because the numbers are codes for location state, county, twp, section. Google api well numbers for details. These numbers are used in every state I believe.

I would like to see an update on ODNR for these other laterals not in the Utica or Marcellus. Maybe if we ask them they would post that info too.

Permalink Reply by Kathi Albertson on November 17, 2013 at 4:59pm
Thanks for the info James. However, I am still not clear in this situation, whether there is one bore hole or two. Since there are two different sets of x and y coordinates and the latitudes are different for the two APIs it seems like there are two distinct holes.
Permalink Reply by Kathi Albertson on November 18, 2013 at 3:26am
Thanks Utica. It is because of clear answers like this that GMS is so helpful.
Permalink Reply by Billy Park Whyde on November 18, 2013 at 3:10am

A horizontal Clinton well? That would be very very interesting as the Clinton has been drilled like Swiss cheese. In some cases the old Clinton wells locations are not even known thus if a horizontal was ran a staged fracking might produce some real interesting  situations including water table contamination by improperly plugged/poor cement jobs. 

0i7okn54zwbdoPermalink Reply by 0i7okn54zwbdo on November 18, 2013 at 3:39am

I think the risk of water table contamination is mitigated by the formations that overlay the Clinton.  Beyond that I have no idea why you would spend money drilling horizontally into a formation that yields oil and gas in traps, which have no predictable layout within the sandstone.  Your seismic would have to be flawless and your horizontal steering would have to be perfect to hit enough traps to make it economical.

Permalink Reply by Charles Randolph on November 18, 2013 at 4:08am

Range fracked a Medina/Clinton well recently on the Ziegler Farm in Warren County, PA. with just one frac stage.  HBP ?

Permalink Reply by Billy Park Whyde on November 18, 2013 at 6:58am

Sounds like a HBP  to me.

Permalink Reply by Billy Park Whyde on November 18, 2013 at 6:58am

Marcus

What I tried to mention is that older Clinton wells are still unaccounted for and Ohio has a program to try and find these old wells. In the old days plugging sometimes were just throwing fence post down the hole or a steel ball. One could just imagine a horizontal frac where it flowed into a old well, thar she blows!!! 

  Any confirmation as to if the well was actually a horizontal into the Clinton?

0i7okn54zwbdoPermalink Reply by 0i7okn54zwbdo on November 18, 2013 at 7:39am

Billy, I get what you're saying but I would hope that the driller (and ODNR) would have a handle on that before they'd approve the well.

Permalink Reply by Craig Cotsamire on November 20, 2013 at 9:01am

There have been plugging regulations since wells were first drilled and they were not as good as today, but steel balls and a fence post were never acceptable as a means of plugging wells. Cast iron balls, not steel balls, were often place on a casing seat and material was then placed on the cast iron ball. Cast iron balls were used so they could be broken up with a cable tool rig in the event someone wanted to reopen the well. I was involved in the opening up and re-plugging of over 300 wells--sometimes cast iron balls were encountering, but never a steel ball.

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