testpack320 Aug 2014 13:59
As I understand it , the fracking fluid will flow to the surface dependant upon a number of factors. More importantly is the quantity of proppant which remains within the frack, ie the volume of sand grains held in suspension in the fracture which probably will have been bonded together with gum or resin in the fluid. Getting the fluids out is one thing, but to have successfully fracked and successfully inserted vast quantities of proppant which remain in situ is more important. The liquid will either flow to the surface or may have leaked elsewhere such as into a watersystem, unlikely at these depths. It may however be that the pressure at that depth causes the frack to completely close, no gas comes to the surface. The vertical wells will have told the design engineers all that they needed to know. Type and depth of the shale and surrounding rocks and gas flowed to the surface from the vertical from a narrow well. For every foot of horizontal successfully fracked, that is equivalent to a foot width of vertical well bore. We have successfully fracked 1500 feet length. Imagine the gas from a 1500 foot wide vertical well bore hole. That is what this will produce, and there is no maybe about that.IMHO. Expect the flowback to take several weeks at least. The flowback must be measured to report to environmental agencies regarding volumes of water needing treatment (if not reused in another frack) and to know the amount of chemical required to treat the flowed back water. Proppant in suspension, and corrosive chemicals etc, must be removed before the water can be safely dumped. The recovered proppant from the well is an indication too of how much sand remained within the well, holding open the frack. The fact we used sand tells me that ceramic proppant was not needed, no very high pressure or temperatures encountered. Everything seems to be good news, relax and wait for a few weeks. I suggest you ignore this site for a while and read a long book.
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