EnCana submits report on gas well blowout | PostIndependent.com

EnCana submits report on gas well blowout

An EnCana natural gas well blowout July 17 was caused when something inside the well impacted the wellhead with enough force to blow off the wellhead top.

EnCana included the analysis in a report filed this week with the Colorado Oil and Gas Conservation Commission.

The blowout forced a partial evacuation of the Grass Mesa subdivision.

“This was a very unusual incident,” said Oil and Gas Commission spokesman Brian Macke. “I don’t remember something like this happening.”

Residents of seven Grass Mesa homes, and 12 homes along West Mamm Creek, were evacuated for approximately six hours after natural gas vented into the air.

No one was injured.

The well is on the J.V. Rose Ranch, approximately five miles south of Interstate 70, and 1.5 miles west of Mamm Creek Road south of Rifle.

The mishap closed County Road 319 and County Road 322 for several hours while EnCana and wellhead supplier Cameron repaired the damage.

EnCana spokesperson Sher Long said the impact blew off the wellhead’s tee connection, bull plug and flowline.

“In addition, the bolts securing the seal in the lower wellhead were damaged, allowing gas to escape from the well,” Long said.

Long said EnCana continues to investigate the accident’s cause.

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