Halliburton's disclosure of the chemicals used in its fracturing technology reveals both the toxic and benign, reports the Associated Press on WSJ.com.
A new Halliburton website provides information on the chemicals the company says are in its three most commonly used solutions in the state, where drilling crews are rushing to exploit the Marcellus Shale, the biggest known deposit of natural gas in the nation.
Halliburton does not say how much of each chemical has been pumped into the ground or identify the wells where they are used, nor does it reveal the exact concentration of each chemical in an overall solution. In general, water makes up the lion's share. Sand comprises about 6 percent while chemical cocktails amount to less than 2 percent.
Many of the chemicals, including hydrochloric acid, methanol and acetic acid, are toxic in high enough doses, and appear in everyday household and industrial solvents, cleaners and adhesives.Original source:
Associated PressRead the full story here.