Artex offer

Hello, I'm new to the forum and seeking advice and insight to a recent offer from Artex in Marietta Ohio for our families property in Perry County. Artex is seeking our approval to do 3D seismic with option to lease. The Utica and Point Pleasant is excluded. Artex wants the Knox Formation. My question is are there any formations in the Knox that can be horizontally drilled. From my research Artex only drills vertical wells, but I'm just thinking of the future. Thanks in advance.

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Permalink Reply by James Vanderink on July 24, 2014 at 4:46am
It's all true Darren. Cgas hit a natural fault in the Utica. 25000bbls the first year and still producing today. Correct me if I'm wrong Dexter. Maybe it was Belden Blake.
Permalink Reply by Darren McCauley on July 24, 2014 at 4:58am

James, is it possible Artex is digging down to see what is across (Utica) then?

Permalink Reply by Dexter Green on July 24, 2014 at 5:33am

That's not an area where the Utica is going to be commercially viable.  Very, very low porosity, much larger molecules to move (oil is molecularly bigger than gas) very little pressure, etc.  Belden & Blake were drilling the Rose Run, hit that frac swarm in the Utica, and produced it. 

Permalink Reply by James Vanderink on July 24, 2014 at 6:42am
I'd hate to speculate Darren. That area has great Roserun/ Trempeleau history and arguably one of the best Clinton fields(Bremen) in the state. Is there anything left of the Roserun well at your fathers place?
Permalink Reply by Darren McCauley on July 24, 2014 at 7:38am

Yes some .. barrel a day maybe??????

Permalink Reply by Gary Castellini on August 1, 2014 at 1:11pm
Sorry all, just had a chance to get back on. Great info on this site. Thank you again.

Dexter/James, any possibility the roserun/ beekmantown is a future horizontal drilling target. I see some majors are drilling the Clinton horizontally which is a sandstone like the roserun.
Permalink Reply by Dexter Green on August 1, 2014 at 4:52pm

Gary, drilling conventional sandstones (like the Clinton and Rose Run) has always been very efficient with a vertical wellbore.  These petroleum reservoirs are contained in a structural trap, more specifically in what are called anticline traps.  These traps do not appear throughout an entire zone, unlike a shale that is relatively homogenous in specific areas. If you shot seismic in two sections you might see seven traps in one and zero in the other.  It appears random--though obviously there are geologic reasons why they formed the way they did--so horizontal drilling may not be the best way to access them.  

Visualize this, and I'll try to do my best to describe it.  Drilling a horizontal well into a shale formation gives you wellbore exposure over a great length of the shale (or in the case of the Utica it's the Point Pleasant submember).  When you frac the well you're hitting a lot of the shale and thus releasing the hydrocarbons across the whole length of the lateral.  With anticline traps you're drilling across a sandstone formation that may have four traps along the length of the lateral and nothing in between them.  So if the cost of drilling a horizontal across a number of these traps is lower than drilling say four or five individual vertical wells then it can be economical.  I'm anxious to see how Enervest will do with their horizontal Clinton wells.  Those are the test case to see if this sort of program is more economical than the conventional method.

Permalink Reply by Michael Kasler on August 2, 2014 at 5:07am

Dexter- what is the approximate width of an average anticline trap? 

Permalink Reply by Dexter Green on August 2, 2014 at 4:22pm

That's a question without an easy answer.  Different strata formed during different geologic eras.  As far as I know there is no data in Ohio delineating the width of individual traps, thus I think it would be impossible to give any sort of approximation of an average.  

Permalink Reply by Gary Castellini on August 5, 2014 at 6:06am
Hey Fellas,
I just found out the AEP and the ODNR are closing down 1700 acres of the wildlife area in Perry County to drill for the next 2 years. That has to be Artex, correct? Is this common for AEP to close an area for drilling?
Permalink Reply by James Vanderink on August 5, 2014 at 6:35am
Gary, yes Artex has 3 permitted wells just south of TR 71a.




4/19/2014
Avondale Wildlife Area is owned by American Electric Power (AEP) and was the first area to be established with an agreement with the ODNR Division of Wildlife for public recreation. Approximately 3,200 acres remain open to public use for hunting, trapping and fishing, but a small portion of the area will be closed for the next two years for mineral extraction, and a planned, five year reclamation process will begin immediately afterward. The closed area encompasses all the property south of Township Road 71A in Perry County.
Permalink Reply by Gary Castellini on August 5, 2014 at 8:26am
Thanks James.

Dexter, I'm following you on the traps but wouldn't the sandstone between the traps have valuable gas?

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