unit size/lateral directions

I've noticed on all the maps I've seen pertaining to the horizontal wells drilled that the laterals all go nortwest or southeast. some go over a mile in those directions. Would like to learn why? Is it because of how the shale formation is laying? Also. does this mean that the unit size ,whether 640 acres,or 1280 acres, will be a long rectangle,as opposed to a square unit? Would royalties only go to the landowners within that unit?  Could your land be only a few thousand feet directly east of the well & not be part of it?

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Permalink Reply by farmgas on January 23, 2012 at 4:13pm

 

Thanks, Finnbear...that`s a nice illustration of a well pad and well laterals.  I still wonder about the area between the vertical kick off point and the horizontal well bore, and how much acreage won`t be drained.  Could this be 30-40 acres or so...?

Permalink Reply by Finnbear on January 23, 2012 at 5:04pm

You are right, it appears there could be some "undrained" area centered around the well pad. I've never seen a vertical placed in the center like you mention.

I'd bet that Homer Smoth knows a lot more about this. Homer, are you still following this thread?

Permalink Reply by farmgas on January 23, 2012 at 6:13pm

Thanks Finnbear...

Permalink Reply by Steven Gardner on January 24, 2012 at 1:12am

Utica,

Not sure if this is what you mean by production unit plat but here are some examples of Oh permit plats and you can see the relationship between lateral length and drilling unit size. It is my understanding that these will be revised as they drill additional laterals from the pad. Notice on the Whiteacre plat that they have enough room on the permit to drill two additional laterals. You can clearly see on these how the drilling permit unit divides up the many property parcels.

Until just recently all the permits I had seen had laterals bearing about N30°W - S30°E but Anadarko has a permit showing two laterals radiating like spokes on a wheel ( can't find it at the moment) and it is a revised plat from the prior "one lateral" plat.

I always questioned the area below the pad also and wondered how they would drain that as it is in the drilling unit. A vertical well seems like a good answer.. but I know nothing about drilling.

 

 

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Permalink Reply by Finnbear on January 24, 2012 at 3:07am

Utica,

It all comes from the ODNR Oil and Gas webpage.

You start at the Oil and Gas Well Locator page and find the wells on the map.

Next, you take the 5 digit permit number from the map and go to the Oil and Gas Well Search page.

Click on OIL AND GAS WELL DATABASE.

Expand "Reports" and click on "Completions". Using the county and permit # pull up the Report for that well. At the bottom of the report will be a link for a .tif or .pdf file which contains the entire permit application file for the well.

Permalink Reply by Finnbear on January 24, 2012 at 5:29am

Probably not until it is put into production or just before. I'd bet that timeline is based on what state law requires. Then add in the lag time that is involved in ODNR actually posting the info. Did you notice the inset on the upper right corner showing the well pad detail? Looks like the eventually intend 6 wells from this pad.

You could ask ODNR when the O&G is required to provide production unit plats and when ODNR makes that info available - email them at minerals@dnr.state.oh.us. I also have a direct contact there if they don't get back with you in a timely manner. Friend me here if you need that email address.

Permalink Reply by Steven Gardner on January 24, 2012 at 12:14pm

Utica,

Your map is a permit map and is "part" of the permitting process filed before drilling. The state min setback is 500 feet. The small 125 acres drilling unit is because the lateral is only 4000 feet. What they are saying regarding production is that this map is not used for delineating the acreage in each parcel in the drilling unit (parcel acreage used to pay roylaties). It is just used to define the drilling unit boundary. The unit production is a different document (DOC) document of consolidation that I believe is filed with the county recorder and each royalty owner in the drilling production unit. It will list all mineral owners, acreage and each respective percentage of the unit.

That's my understanding of it all .. but if someone knows different please let us know.

You can also pull these maps right off the well finder map site.. once you find the well just use the "hot link to well card" and the .pdf & .tiff files will show at the bottom if DNR has made them available. Of course if you have the well number you can just use the database.

Permalink Reply by Finnbear on January 24, 2012 at 3:04pm

Where do you find the "hot link to well card" you mentioned?

Permalink Reply by Steven Gardner on January 25, 2012 at 2:47am

 Finnbear,

it is one of the tools on the left side of the interactive locator map, "Hotlink View Well Card". Make sure you have the proper layers turned on, Top right corner .. Wells should have the square checked (on) and Directional Well bore should be checked (on) with black dot marked (active layer)

This site can be very slow if you have a bad or slow connection. You can also link to the database from here.

Permalink Reply by Finnbear on January 25, 2012 at 3:00am

Steven,

I figured it out. There are two versions of this map.

The one I normally use http://www.dnr.state.oh.us/Website/Geosurvey/geosurvey_emergency_oi... does not have that option.

There is another version at

http://www.dnr.state.oh.us/Website/Geosurvey/oilgas/viewer.htm that has the hotlink option. Thanks

Permalink Reply by Steven Gardner on January 25, 2012 at 2:55am

Attached a print from the locator page that shows something different from what I've seen before on well bore alignment...

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Permalink Reply by Steven Gardner on January 25, 2012 at 3:18am

Finnbear, yeh.. not the emergency page.

Utica, What I see different is that the bores are not parallel and this is the only one on the locator map that show this way. Also the permits on these do not show parallel bores.. one is 30° and another is 17°. Something different going on here.. ?

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