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77 comments on US Natural Gas: Lessons from BP's Tight Gas Facility in Wamsutter WY

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LarryCO on June 3, 2008 - 9:45am Permalink | Subthread | Comments top

1 acre = 0.0015625 sq mile

So 8 wells/sq mile

or

8 wells/acre ?

Which is it? Otherwise a nice article.

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Gail the Actuary on June 3, 2008 - 10:05am Permalink | Subthread | Parent | Comments top

It is 8 wells per section. A section is 640 acres.

A BP presentation I found on the internet had the 1 mile by 1 mile graphic. I presume 640 acres is equivalent to 1 mile by 1 mile, but haven't checked.

I found the place I said "per acre" instead of "per square mile" and fixed it.

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john milton on June 3, 2008 - 10:42am Permalink | Subthread | Parent | Comments top

I presume 640 acres is equivalent to 1 mile by 1 mile, but haven't checked.

Correct, in terms of area, 640 Acres = 1 square mile = 1 Section
http://www.metric-conversions.org/area/acres-to-square-miles.htm

Land survey Jargon (In US and Canada):
A square mile, or an acre, can be any shape, but a Section (as in a Section of a Township) must be a square with a side length of 1 mile.

A Township is a square shape with a side length of 6 miles i.e. contains 36 Sections.

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