Energy Exchange

“It’s so clean I’d drink it.”

Travel to any recent conference or trade show on produced water management and there’s a good chance you’ll hear this line or something similar. I’ve heard it myself, alongside claims that a patented treatment delivers water that’s “fresh” or “meets drinking water standards.”

This sort of talk is on the rise as operators and regulators look for ways to reuse produced water both inside and outside of the oilfield. Some of these uses carry real risks to human health and the environment from chemicals that may be present—even after treatment. At first blush, if the product can be called “fresh” or meets drinking water standards, it doesn’t sound risky. So why the worry? The reality is that these statements tell us very little about the quality of treated produced water.

“Fresh” from a scientific perspective, means next to nothing. And drinking water standards are simply the wrong standards to apply to produced water, or for that matter any treated wastewater – industrial or municipal. Here’s why.

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Look before you leap – why learning more about oilfield wastewater is critical to reducing health and safety risks.

The oil and gas industry has a massive wastewater problem. And if the growing dialogue about new ways of dealing with it are any indication, it may get worse if we aren’t careful.

Cost concerns, pressure to conserve water, and other factors have led some oil and gas companies to consider new ways to manage or repurpose wastewater – including using it to irrigate crops. That could create more problems than it solves.

Managing the massive amount of oil and gas wastewater has been a challenge for energy companies for generations. Some wells produce up to 10 times more wastewater than oil. In the United States, companies produce nearly 900 billion gallons of wastewater a year. That’s enough to fill over 1,000 football stadiums.

Ongoing Risks

Oil and gas wastewater is often many times saltier than sea water – and can ruin soil for generations if large amounts spill or leak during storage or transport.  In fact, landowners with a long history of oil and gas production on their lands know that a wastewater spill can cause much more long term damage to their land than an oil spill. Read More »