azz, page-4

WW111, Most times the best gas/oil is all ways on the very top of the zone, The fracking is expensive, they keep that to a minimum, you have to frack each zone separate as most time you have a big variation in PSI, AZZ have found that from past wells. In the states you can get a frack crew over night most times, they are all truck mounted, once on site, they can be fracking the same day.