FOUNDATION EQUIPPED WITH SKIRT FOR INTRODUCTION INTO SOFT MATERIAL Russian patent published in 2016 - IPC E02B17/02 E02D27/52 

FIELD: construction.

SUBSTANCE: group of inventions relates to jack-up drilling platforms in general and to a foundation, which may be used for a jack-up drilling platform, in particular. A foundation 10 equipped with a skirt, designed for installation onto a sea bottom with quite soft material above the bed of the base, comprises a shoe support 12, having an upper part and a foot 16, and a skirt 20, having an upper edge, which is connected as an integral part with the shoe support 12 and protrudes down, surrounding the foot 16, and a lower edge 25 for introduction into the sea bottom. The upper part and the foot 16 are connected along the perimeter and form an outer edge 14, besides, both the upper part and the foot 16 have flat or conical configuration. One support 40 of the jack-up drilling platform is installed on the upper part. The foot 16 has a flat base or a descending slope. The skirt 20 contains multiple circumferential holes 22, which adjoin the foot 16 of the shoe support 12 and arranged within the upper half of the skirt 20 height. Configuration of holes 22 provides for release of soft material from inner space defined by the skirt 20 and foot 16, during foundation 10 submersion into the sea bottom, at the same time the soft material is not gripped inside the foundation 10 equipped with the skirt. The foundation 10 equipped with the skirt is made as capable of introduction into the bed of the base for efficient depth. The jack-up drilling platform comprises a working platform, multiple supports 40 and multiple foundations 10 equipped with the skirt given above. Each support 40 has two ends, one of which is connected to the working platform to ensure support, and the other one - with one foundation 10 equipped with the skirt, so that foundations 10 equipped with the skirt provide for fixation and support of the jack-up drilling platform. The method to install the foundation 10 equipped with the skirt designed for installation on the sea bottom with quite soft material above the bed of the base, contains foundation slope into the soft material on the sea bottom and simplified release of soft material from the inner space, defined by the skirt 20 and foot 16, via multiple circumferential holes 22, thus increased capacity of the foundation.

EFFECT: group of inventions provides for increased bearing capacity of a jack-up drilling platform and a foundation equipped with a skirt.

25 cl, 3 dwg