did Ohio relax the 500' standoff for unit boundary?

check out this recent plat map of the Helen Halter wells in Harrison county......it shows the bottom hole only 30' from the unit boundary and shows the first perforation only 150' from the unit boundary.....same on the last perforation ......on each well............

the laterals are spaced pretty tight at 400' with a 900' cushion to the "sides" of the unit.......almost like they could add another one spaced at 400' and still have a 500' cushion........but both ends of the unit the fracking perforations are only 150' from the unit boundaries.

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Permalink Reply by Booger on June 3, 2014 at 2:35am

Greg - here is the other

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Permalink Reply by Booger on June 3, 2014 at 3:37am

Greg - in case you can't find them, here are the NMharrison NW plats (2 units in the NW direction)........the NMharrison unit borders the Halter so if you are anywhere between them, then you are in one of these units.

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Permalink Reply by Booger on June 3, 2014 at 3:43am

and the SE plat for NMharrison.

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Permalink Reply by Snort Widley on January 6, 2015 at 6:09am

In general, fractures in this rock do only grow in one direction.  You can see what the operators are thinking by how close they space their frac clusters.  When we frac the rock, it's not breaking like glass in multiple directions but mostly in the direction of the maximum stress plane that exists at the reservoir depth. Rock breaks in the direction of max stress and opens up in the direction of min stress.

Permalink Reply by Booger on June 3, 2014 at 3:10am

looking at both helenhalter plats - it seems the last perforation on the NW laterals are only 300' from the last perforation on the SE laterals.......so I guess that answers my earlier question of which way the fractures travel the farthest.

it would seem the fractures travel farther in the direction perpendicular to the bore - vs. parallel to the bore........must be because of the geology......

Permalink Reply by Greg on June 3, 2014 at 10:28am

Thanks a bunch.

Permalink Reply by Philip Brutz on January 2, 2015 at 10:15am

The Hayes permit is a very interesting read:

 http://apps.ohiodnr.gov/mineral/oil/MRMImages/1/43/287855.pdf

Eclipse asked for a 150' "Heel Toe" setback.

Hayes well card: https://gis.ohiodnr.gov/Website/DOG/WellSummaryCard.asp?api=3405924...

Permalink Reply by KAR on January 2, 2015 at 12:13pm
There are variances that can be requested in Ohio. Operators can ask for reduction in spacing from the wellbore to the side of the unit down to 350ft. This is the smallest distance the ODNR will grant the request for. The reason is that they want to protect the mineral owners since Ohio is not a "first come first serve" capture state. The fractures will go East to west not North to South. That's why they will grant a smaller distance at the "heel and toe". The heel is the landing point and the toe is the bottom hole.
Permalink Reply by Philip Brutz on January 3, 2015 at 8:44am




Permalink Reply by Snort Widley on January 7, 2015 at 6:18am

This looks very reasonable for this situation.  The ODNR is not changing the broad rules but applying some common sense to this situation.  I applaud them for being flexible.  It is unfortunate that without a more rigorous set of rules around sections that there is going to be stranded acreage in areas where initial very competitive drilling occurred.

Permalink Reply by JS on January 9, 2015 at 12:59pm

Philip, thank you for the excellent slides! Of particular interest is the section on the maximum principle stress direction at the bottom of the second slide. Is it possible to get a link to the original presentation? Sent a friend request if it would be easier just to send the presentation.

Permalink Reply by The Hiker on January 9, 2015 at 1:56pm

Agree.  I'd like to see the original also.  Thanks

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