fresh and waste water cost
Takes from Greenhunter presentation on water for Hydrofracking:
- Fresh water: Costs per barrel has increased from 21c a barrel to 50c a barrel. A barrel is 42 gallons, accordingly water cost for a water frac equate to $36K at 3 million gallons to $71K at 6 million gallons, and $142K for 12 million gallons fracs.
- Waste water cost: 15% to 30% of fresh water comes back as flow back, or 900K gallons to 1.8m gallons flow back for a 6 million gallons frac, at a cost of $1 to $11 per barrel, or $21000 to $235000 at 15% flow back, to $42K to $471K at 30% flow back.
If we were to take a well as an example:
Fresh water cost: 50c per barrel
Water used: 5 million gallons (119K barrels)
Flow back: 20% (24K barrels)
Treatment cost: $5.5 per barrel
Fresh water: $60K
Waste Water: $132K
Apparently the Marcellus is the most expensive in dealing with waste water, Eagle Ford is cheaper, but fresh water is harder to obtain.
I strongly advice watching their presentation to have a better idea about the challenges and costs associated with managing fresh and waste water for hydrocrackers, the trends look VERY favorable for Gasfrac waterless technology: