Interesting discussion regarding four-mile laterals.
Is it possible to put a well in the middle of 2560-acre spacing unit, drill one well, and put in a lateral going north two sections, and another lateral going south two sections? I don't know, just asking. It is my impression that single vertical bore holes have been drilled with two laterals -- this is a stacked dual lateral, so I don't know why it wouldn't be possible for the laterals to go in opposite directions and be called "unstacked dual laterals."
Something tells me four-mile laterals are a bit tougher than a dual two-mile laterals.
Update, May 17, 2010: the referenced thread above continues to draw interest, and yes, there is talk (and more evidence) that we are talking about "unstacked dual laterals" and not four-mile laterals. Time will tell.