Fracking fluids get a nontoxic composition
BY KEVIN BEGOS Associated Press
Tuesday, February 05, 2013
2/05/13 at 6:42 AM
PITTSBURGH - The oil and gas industry is trying to ease environmental concerns by developing nontoxic fluids for the drilling process known as fracking, but it's not clear whether the new product will be widely embraced by drilling companies.
Houston-based energy giant Halliburton Co. has developed a product called CleanStim, which uses only food-industry ingredients. Other companies have developed nontoxic fluids as well.
"Halliburton is in the business to provide solutions to our customers," said production manager Nicholas Gardiner. "Those solutions have to include ways to reduce the safety or environmental concerns that the public might have."
Environmental groups say they welcome the development but still have questions.
The chemicals in fracking fluids aren't the only environmental concern, said George Jugovic, president of PennFuture. He said there is also concern about the large volumes of naturally occurring but exceptionally salty wastewater and air pollution.
It's premature to say whether it will ever be feasible to have fluids for fracking that are totally nontoxic, said Scott Anderson, a senior adviser for the Environmental Defense Fund.
"But we are encouraged to some extent by recent industry efforts to at least reduce the toxicity," Anderson said.
Fracking, short for hydraulic fracturing, has made it possible to tap into energy reserves across the nation but also has raised concerns about pollution, since large volumes of water, along with sand and hazardous chemicals, are injected deep into the ground to free the oil and gas from rock.
Regulators contend that overall, water and air pollution problems are rare, but environmental groups and some scientists say there hasn't been enough research on those issues. The industry and many federal and state officials say the practice is safe when done properly, but faulty wells and accidents have caused problems.
"Most people agree there are no confirmed cases so far" of fracking chemicals migrating up to drinking water, Anderson said. But he added that simple spills of fluid on the surface can cause problems.
There also may be technical and cost issues that limit the acceptance of products such as CleanStim. There is tremendous variation in the type of shale rock in different parts of the country. For example, drillers use different fluids even within the same state, and the specific mix can play a large role in determining how productive a well is.
Gardiner wouldn't say how widely used CleanStim is. "The customers who do use it certainly like the material," he added.
Original Print Headline: Nontoxic fluids developed for fracking
A worker steps through the maze of hoses being used at a drilling site operated by Halliburton near Rulison, Colo. The oil and gas industry is trying to ease environmental concerns by developing nontoxic fluids for the drilling process known as fracking. Associated Press file