Norwegian Contractors

Kv/erner Concrete Solutions As

Dr. Techn. Olav Olsen As

Kvaerner Engineering As

Dr. Tech. Olav Olsen As

Kvaerner Concrete Solution As

Jon Hermstad

Olav Olsen

Trond Landbø

Jan-Diederik Advocaat

Dag Nikolai Jenssen

Weak soil anchor device () for anchoring a number of structures, as well as method for arranging an anchoring in weak soils. Seen in a vertical operating position, the weak soil anchor device () comprises: an elongate inner continuous open box structure () with a triangular cross-section comprising a first wall surface (), second wall surface () and third wall surface (), an outer continuous open box structure () with a smaller vertical extent than the inner box structure () and having a triangular cross-section consisting of a first outer wall surface (), second outer wall surface () and third outer wall surface (), the vertical center area () of the first, second and third outer wall surfaces is connected to the inner elongate continuous open box structure () in a lower area of respectively an outer edge area between the first and second wall surface (), second and third wall surface () and the third and first wall surfaces (), and anchor brackets () are arranged in a lower outer area of the weak soil anchor device (), where the weak soil anchor device comprising the inner and outer box structure () is lowered down into the weak soils to a desired depth.

Weak soil anchor device to anchor one or several structures and method to arrange an anchor in weak soil

A mobile drilling system comprising a top member with a drilling rig positioned thereon. The top member is removably engaged with a foundation member. The foundation member comprises a tower. The top member is moveable and adapted to be elevated out of the water for placement on top of the tower. The tower is preferably of concrete and extends out of the water and above any ice. A method is also described by which the top member is elevated out of the water either by jacking down legs or lifting by interaction with the tower.

Mobile drilling system and a methodology for installation of the system

Method for founding and stabilizing an off-shore platform which at its lower end is provided with skirts. The skirt or skirts are forced so deep down in the ground that a significant portion of the foundation area is transferred down to a depth where the load carrying strength of the ground is sufficient in regards to geotechnical stability and that it prevents an acceptable settlement. The platform (1) which is intended to be installed at very great depths, includes a foundation structure to be forced down in the sea bed, a cell portion that in its operational position is completely submerged, and an upper portion extending from the cell portion and up above the sea surface, where the submerged cell portion includes a centrally located cell surrounded by at least one cell portion.

Off-shore platform structure

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Oslo, Norway

Jon Hermstad