Shell docks arctic drilling rig in seattle despite protests

EVERETT -- Despite protests from environmentalists and Seattle city leaders, Royal Dutch Shell is still planning to move its Arctic oil drilling rigs to a Seattle port terminal. One oil rig, the Noble Discoverer, docked in the Port of Everett Tuesday night. [pdf]

Offshore arctic drilling rigs

Development and production operations in the Arctic offshore as a result of exploration have been limited, with the exception of the Barents and Norwegian seas. In Alaska, exploration subsequent to the discovery of the Prudhoe Bay oilfield has focussed on the onshore and shallow coastal waters.SummaryExploration for petroleum in the Arctic is expensive and challenging both technically and logistically. In the. . There are 19 geological making up the region. Some of these basins have experienced and , most notably the where oil was first produced in 1968 from .. . Drilling in the peaked during the 1970s and 1980s, led by such companies as in the Sverdrup Basin of the Arctic Islands, and by and in the Beaufort S. . In June 2007, a group of returned from a six-week voyage on a , the expedition called . They had travelled to the , an underwate. . In the years post 2000, sedimentary basins offshore were believed by some geologists to have high potential for large oil discoveries. In a comprehensive study of the potential of Arctic basins published in 2008, the. [pdf]

What does static mean concerning a drilling rig

Break Circulation - To establish circulation of drilling fluids after a period of static conditions. Circulation may resume after a short break, such as taking a survey or making a mousehole connection, or after a prolonged interruption, such as after a round trip.. Break Circulation - To establish circulation of drilling fluids after a period of static conditions. Circulation may resume after a short break, such as taking a survey or making a mousehole connection, or after a prolonged interruption, such as after a round trip.. Hydrostatic pressure in drilling refers to the pressure exerted by a column of drilling mud or fluid within a wellbore. It is an essential factor in drilling operations as it balances the formation pressure and prevents well blowouts.. The load exerted on the BOP handling system by the static weight of the BOP stack. Source: API SPECIFICATION 7K, Drilling and Well Servicing Equipment, Sixth Edition, December 2015. Global Standards.. When the well is in a static condition, the bottomhole pressure is equal to the hydrostatic pressure. When the well is circulating, the bottomhole pressure increases due to the applied surface pressure needed to overcome friction pressures in the piping.. It means that the fast line tension will increase under a dynamic condition; however, the dead line tension will remain the same because it is still in static condition. [pdf]