Shell exploration drilling advances at Burger J prospect
BY TIM BRADNER, ALASKA JOURNAL OF COMMERCE: 26 Aug 2015
Shell is keeping a tight lid on information about its Chukchi Sea drilling for now.
The semi-submersible Polar Explorer is at work drilling the first well in Shell’s 2015 program, Burger J, and a weekly report issued Aug. 25 by the U.S. Bureau of Safety and Environmental Enforcement, or BSEE, indicated that a shallow casing string has been installed and cemented into place on the well.
This is an initial “string” of casing that is typically installed once the “mud-line cellar” excavation is completed, a step Shell reported earlier. “Casing” refers to heavy steel pipe installed in the well through which the actual drilling tools are operated and drilling “mud,” or fluid, is circulated to keep up pressures at the bottom and to remove rock cuttings from drilling.
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