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AssigneePetroleo Brasileiro S.A. - Petrobras
InventorsCipriano J. De Medieros, Jr., Luiz H. Hassui
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A gravity pile for platform foundations is described which comprises a series of pile sections made from two concentric tubes the annular space between which is filled with an elevated specific weight composition such as mortar or hematite. Individual pile sections can be joined together by means of tubular connecting rings welded to the ends of the sections and welded or screwed to each other. The uppermost section of the pile may be provided by a tubular support ring provided with a peripheral load bearing flange for simple direct contact support of the template designed to receive the tethers of the platform. A process is also described for installing the pile in which the pile penetrates the sea bed under its own weight and penetration is then complements by conventional undersea pile driving or preferably by jetting the interior of the pile using the drilling string of the rig. Further weight may be provide by adding cement to the interior of the pile using the same drilling line.
Process for installing a gravity pile for a marine platform foundation, said gravity pile including two concentric tubes defining an annular space which is filled with a composition having an elevated specific weight, said method including the steps of driving the pile under its own weight into the marine soil and complementing aid driving by jetting the interior of said pile to facilitate penetration of the pile under its own weight into the marine soil, and adding further weight to said pile by filling the interior of said pile with a composition which has a high specific weight,
A gravity pile for marine platform foundations, comprising a plurality of pile sections cooperating with each other in longitudinal relationship to form the said pile;
A gravity pile for marine platform foundations, comprising a plurality of pile sections cooperating with each other in longitudinal relationship to form the said pile;
Dependencies are inferred from the claim text.