CATEGORIZED | News

Methane hydrate technologies to be tested on Alaska’s North Slope

Posted on 25 October 2011

The US Department of Energy (DOE), ConocoPhillips and the Japan Oil, Gas and Metals National Corp will work together to test innovative technologies for producing methane gas from hydrate deposits on the Alaska North Slope. The tests will use the “Ignik Sikumi” gas hydrate field-trial well, a fully instrumented borehole installed in the Prudhoe Bay region by ConocoPhillips and the Office of Fossil Energy’s National Energy Technology Laboratory earlier this year.

Current test plans call for roughly 100 days of continuous operations from January to March 2012. Tests will include the initial field trial of a technology that involves injecting CO2 into methane hydrate-bearing sandstone formations, resulting in the swapping of CO2 molecules for methane molecules in the solid-water hydrate lattice, the release of methane gas, and the permanent storage of CO2 in the formation. This experiment will be an extension of earlier successful tests of the technology conducted by ConocoPhillips and their research partners in a laboratory setting.

Following the exchange tests, the team will conduct a monthlong evaluation of an alternative methane-production method called depressurization. This process involves pumping fluids out of the borehole to reduce pressure in the well, which results in dissociation of methane hydrate into methane gas and liquid water. The method was successfully demonstrated during a weeklong test conducted by Japan and Canada in northwestern Canada in 2008.

The new testing will take place under a statement for cooperation signed in 2008 and extended in 2011 by DOE and Japan’s Ministry of Economy, Trade and Industry. The production tests are the next step in both US and Japanese efforts to evaluate the response of gas hydrate reservoirs to alternative gas hydrate production concepts. The tests will provide critical information to inform potential future extended-duration tests.

Methane hydrate consists of molecules of natural gas trapped in an open rigid framework of water molecules. It occurs in sediments within and below thick permafrost in Arctic regions and in the subsurface of most continental waters with a depth of approximately 1,500 ft or greater. Many experts believe it represents a potentially vast source of global energy, and DOE scientists have studied methane hydrate resource potential and production technologies for more than two decades.

Leave a Reply

*

FEATURED MICROSITES


Recent Drilling News

  • 21 November 2014

    Statoil cancels Stena Carron rig contract offshore Angola

    Statoil has decided to cancel the Stena Carron rig contract after fulfilling the work commitments in the Statoil-operated blocks 38 and 39 in the Kwanza basin offshore Angola...

  • 19 November 2014

    Stepwise approach guides Statoil’s North American onshore path

    When Statoil entered the North American onshore industry in 2008, it was a non-operator in a joint venture (JV) with Chesapeake in one shale play. Since then, Norwegian-based…

  • 18 November 2014

    Stilley: Despite challenging outlook, opportunities are plenty in the long term

    Opportunities abound for the drilling industry even in an environment of high costs and falling oil prices, Randall D. Stilley, President & CEO of Paragon Offshore, said...

  • 18 November 2014

    In well control, an ounce of prevention is worth a pound of cure

    It has been more than four years since Macondo, and the long-term effects of the oil spill are still being determined. “Oil is a natural substance that can be degraded...

  • 18 November 2014

    Plaisance: Well Control Institute evaluating priority topics

    The Well Control Institute (WCI) Board of Directors convened on 11 November in New Orleans. Moe Plaisance, who recently retired from Diamond Offshore Drilling, has...

  • Read more news