Each shale gas well’s water consumption

On the selection of fracturing fluid, there are three kinds of liquid nitrogen system, including direct injection, nitrogen foam injection and drag reduction of water. Cost, environment and yield and other factors to consider, at present the standard approach is the selection of fracturing fluid drag reduction of water, i.e. at high discharge pump into a large amount of water and a small amount of proppant and additives, to crack into deeper, improve the shale gas.

  Because the content of drag reduction in the water of the 99.5% water, so the technology is also known as the water fracturing. In the drilling and fracturing stage, according to the World Resources Institute data display, a Shale gas well needs 7000 to 25000 tons of water.

  And in the waste water recovery stage, probably only 70% of the waste water can be returned to earth for processing and storage, 30% of the water will be underground rock absorption.