Anadarko Petroleum said late on 30 June that it has tested more than 4,000 active oil and gas lines and plugged another 2,400 inactive ones per a state order issued after a fatal home explosion in Firestone, Colorado, in April.
“We are looking at everything,” said John Christiansen, a spokesman for the Houston-area company. “We aren’t taking any chances.”
On 17 April, gas from an abandoned flowline still attached to an Anadarko well in Firestone’s Oak Meadows neighborhood ignited in the basement of 6312 Twighlight Ave., killing Mark Martinez and Joey Irwin as they worked on a water heater.
Right after the explosion, Anadarko shut down 3,000 vertical wells similar to the one implicated in the blast and, 10 weeks later, has brought only 30 of them back into production.
The company has pledged to permanently shut-in a half dozen wells located near the Oak Meadows neighborhood, which Century Communities built on top of an old oil and gas field criss-crossed with numerous flowlines.
The 2,400 inactive lines plugged under the state order were 2 or 3 in. in diameter. As an added precaution, the company capped another 3,600 1-in. lines no longer in use, bring the total number of abandoned lines to 6,000 plus.
Christiansen said the bulk of the abandoned lines were located on tank farms, or facilities that store and process oil and gas coming from surrounding wells. In Weld County, Colorado, Anadarko has switched to a tankless system where oil and gas is transported on larger pipelines and handled at a centralized facility.
Also per the state order, the company said it has pressure tested more than 4,000 active lines and that 99.6 percent had passed. The 16 that failed are undergoing repairs and will be retested.
“There are no hydrocarbons flowing through them,” Christiansen said.
Read the full story here.
Don't miss our latest HSE content, delivered to your inbox twice monthly. Sign up for the HSE Now newsletter. If you are not logged in, you will receive a confirmation email that you will need to click on to confirm you want to receive the newsletter.
11 Nov 2018
- Abu Dhabi, UAE
Training course by Dr. Kamel Ben-Naceur
17 Sep 2018
- Calgary, Alberta, Canada
Training course -- Plan to attend!
24 - 26 Sep 2018
- Dallas, Texas USA
Be part of SPE's annual conference for great papers, networking, training, award presentations and so much more. Register today!
18 - 19 Sep 2018
- Calgary, Alberta, Canada
Regulatory pressure and public perception are driving a significant focus on wellbore abandonments. Complications arise when there are integrity issues that require remediation. Explore new techniques for resolving these issues.
8 - 9 Oct 2018
- Kuala Lumpur, Malaysia
Well integrity is often managed as part of the asset’s lifecycle production and maintenance. But ageing wells pose new challenges. Learn how to manage integrity sustainably.
HSE Now is a source for news and technical information affecting the health, safety, security, environment, and social responsibility discipline of the upstream oil and gas industry.
©2003-2018 Society of Petroleum Engineers, All Rights Reserved.