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Posts Tagged ‘Alaska’

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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Cheryl Anderson forwarded this interesting Anchorage Daily News update on hydrate production research and linked information about the specific Department of Energy research projects.

The methane – carbon dioxide exchange project is particularly interesting and is summarized nicely by the Daily News:

Conoco Phillips will try injecting carbon dioxide into the hydrate. Laboratory tests show that injecting carbon dioxide displaces methane, which comes out of the hydrate as a gas. The idea is that the carbon dioxide molecules take the place of the methane molecules in the hydrate, keeping it stable.

This could be neat, if it works. Carbon dioxide would be permanently sequestered, or stored, underground, while the methane is extracted and the hydrate is left intact.

One question the Conoco Phillips production test will attempt to answer is whether this reaction in the hydrate can occur fast enough for methane production to reach practical volumes.

The comment below is an understatement, but the enormous energy potential justifies the research.
This isn’t a slam dunk, though. The technical challenges are considerable.

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Positive measures announced by President Obama during today’s radio address:

  1. Hold a Gulf of Mexico lease sale this year and two next year
  2. Extend Gulf of Mexico and Alaska leases where drilling activity was suspended after the blowout
  3. Accelerate pre-sale seismic surveys in the Mid- and South Atlantic
  4. Conduct annual lease sales in Alaska’s National Petroleum Reserve

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Anchorage Daily News:

The federal Environmental Appeals Board, which is part of the EPA, reviewed the permits. It found last week that the analysis of the impact of nitrogen dioxide emissions from the ships on Alaska Native communities was too limited, and remanded the permits so that problems cited by the board could be fixed by the agency.

The closest proposed drill site is 60 miles off shore and about 80 miles from Wainwright, an Inupiat Eskimo village 710 miles northwest of Anchorage.

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Shell’s submission to the BOEMRE provides more details on discharge plans for their Beaufort Sea exploratory drilling, and confirms that all muds and cuttings generated in drilling below the 20″ casing will be transported out of the Beaufort for disposal.  Shell also plans to transport gray water and sanitary wastes, bilge, and ballast water to approved discharge sites. This is about as close as you can get to true “zero discharge” when conducting exploratory drilling from a floating drilling unit.


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Shell has agreed to transport its used drilling fluids from Beaufort Sea exploration drilling out of the Arctic if the company finally gets government permission to drill a well next summer. Alaska Journal of Commerce

I assume this includes all drilling fluids and drilled solids (cuttings) except for the spud mud and cuttings generated prior to installing the riser?  If so, I believe this will be a first for an exploratory well drilled from a floating rig in US offshore waters.

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