Knowing that some folks may not read the comments, I have re-posted it here:
The roundness gives conductivity in the frac, not the ability for the sand to 'flow' more easily, and to greater lengths.
Most Bakken wells in Canada use only 80 to 150 tonnes per well.
Bakken wells in North Dakota and south of that can use up to 1000 tonnes/well. Just depends on the depth, and the permeability of the source rock, etc.
I've studied thousands of well completions, and horizontal wells typically use anywhere from 100 to 5,000 tonnes/well, with the average well using around 1,000 tonnes or less. Just depends on the play and the depth, etc. Ceramic sands are typically used where regular sands start to crush because of the overburden pressures.
