Areas of Texas and the western states where much of the U.S. oil and gas potential is located have been hit by drought in recent years, causing worries about water supplies and the use of water in hydraulic fracturing. Fracing takes a lot of water! But Apache Corporation has created a system to frac in the Wolfcamp shale in west Texas without using fresh water. This is an important shale area: just a few months ago Scott Sheffield, the CEO of Pioneer Natural Resources Co., said: “The Wolfcamp could possibly become the largest oil and gas discovery in the world.”
This new approach couldn’t come at a better time, since Texas has been in a drought since 2010 and in November 2013 Texas voters approved Proposition 6, which allocates $2 billion from the Economic Stabilization Fund to the new Texas Water Implementation Fund.
Apache is working with a closed loop system that only uses brackish and recycled water in the Barnhart project area in Irion County. This water is taken from the Santa Rosa Formation in the Dockum Aquifer and treated to remove substances that could damage pipelines and pumping equipment. The treated water is then stored in retention ponds and then can be pumped directly into drilling sites in the area. There is a significant amount of water that returns to the surface after fracing. The U.S. Environmental Protection Agency estimates between 10% to 70% of the injected water, depending on the geologic formation, is returned to the surface. Reusing water that is produced and recovered from fracing conserves fresh water for drinking and agricultural use, and it also saves Apache money since they don’t have to haul water in and out. That in turn reduces wear on local roads, and eliminates the need for a used water disposal facility. Greg Hicks, Apache’s production engineer manager, said: “It’s a win-win situation for the environment and us.”