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Alpine drill site, CP photo

In March, a gas release incident occurred while drilling a disposal well in the Alpine field on the North Slope of Alaska. While there were no injuries or environmental impacts, the investigation and findings will help minimize well construction risks during future operations. The report is attached.

Some comments:

  1. I like the way the report, related information, and all situation reports were posted in a timely manner on the Alaska Oil and Gas Conservation Commission (AOGCC) homepage. It’s refreshing that the AOGCC homepage is 100% substantive and completely devoid of the spin and propaganda you find on most government and corporate websites. (For comparison purposes, check out the Department of Energy and Department of the Interior homepages.)
  2. The ConocoPhillips (CP) incident report is concise, logically organized, and clearly written.
  3. The findings are consistent with the data, and the supporting figures are legible and understandable.
  4. Instead of blaming the crew or using the “human error” cop out for the leak-off test execution and subsequent monitoring issues, the report rightfully attributes those failures to company procedures and communications. This reflects well on CP’s understanding of the human and organizational factors that contribute to safety performance, and CP/AOGCC efforts to foster a strong safety culture. (Remember the shameful prosecution of well site leaders Bob Kaluza and Don Vidrine following the Macondo blowout.)

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PSA has posted the Gullfaks B gas release report in English.  Also posted is the report on a lifting incident at Njord A.  The reports are comprehensive and timely.

The gas leak occurred during leak testing after maintenance work on a production well. The gas derived from a volume trapped between the downhole safety valve and the Xmas tree. It proved impossible to operate the emergency shutdown valves on the well. The leak lasted about an hour, with an initial rate of 1.3 kilograms of gas per second. The volume of gas released is estimated at about 800 kilograms.
No people were injured in the incident, but the leak created a serious position on the installation.

Gas Cloud - Gullfaks B



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