Failure Investigation Report: Failure of Piping at EnCana Swan Wellsite A5-7-77-14 L W6M by the BC Oil and Gas Commission, February 4, 2010.
The 22 November 2009 failure…was caused by internal erosion of the wall resulting from flowing fracture sand suspended in the gas stream. Leak detection and emergency isolation at the site did not achieve timely detection of the leak or control of the escaping gas. EnCana’s integrity management program did not effectively mitigate the hazard of internal erosion. [Emphasis added]
[Refer also to: EnCana Corporation facing criminal charges
$250000 in community safety projects following Encana deadly sour gas leak ]