Offshore platform

 

(57) Abstract:

The invention relates to hydraulic construction, and in particular to structures for engineering works in the shallow waters of the continental shelf. Offshore platform includes a floating body and a floating bearing, made of sealed structures with variable buoyancy connected to the housing can be rotated about the axis of the connection and installation at various angles relative to the body, and some of the transom supports pivotally connected to the housing, and the other is rigidly attached to the bottom. The invention allows to simplify the installation and operation of floating structures. 4 Il.

The invention relates to hydraulic construction, and in particular to structures intended for engineering work on the water in conditions of shallow waters of the continental shelf.

In the practice of engineering works installation of the platforms in shallow waters of the shelf is a difficult task.

Known for designs that minimize pitching, the body is protected from damage and the hanging platform above the water surface [1, 2, 3 and 4].

The objective of the invention is to simplify the installation and operation of Platts consists of serially connected blocks-pontoon-type pontoons pontoon-bridge Park [5]. Floating supports are made of pontoons type pontoons pontoon Park [6]. Floating support one end pivotally attached to the housing can be rotated about the axis of the connection.

In Fig. 1 shows a floating platform in the initial stage of installation, when the floating support 2, which is attached to the positive buoyancy at the surface position of the hinge attached to the body 1.

In Fig. 2 - the same, in the intermediate phase, when a sufficient depth of the waters of the floating support 2 is attached to the negative buoyancy for installation in a given underwater position in which the supports are rigidly fixed in the hinge connection.

In Fig. 3 - an intermediate position at which the floating supports 2 sets of positive buoyancy, through which the floating body 1 is placed in the surface position, in which the platform and transported to the shallow plot.

In Fig. 4 - the final stage of installation of the platform by which shallow water in floating bearings 2 synchronously reduced positive buoyancy and the platform is fixed steadily through touch free ends of bottom waters.

Lifting platform with Malkova the s pontoons to facilitate installation (dismantling) in the shallow parts of the continental shelf.

Sources of information

1. SU 1437479 A1, 15.11.1988.

2. SU 1550036 A1, 15.03.1990.

3. Arkhangelsk Century. And. Offshore geotechnical drilling - M.: Nedra, 1980.

4. Arkhangelsk I. C. Drilling in the coastal zone of seas, Leningrad: Nedra, 1975.

5. Guide pontoon-bridge Park RAP. - M.: Voenizdat, 1965.

6. SU 1827406 A1, 15.07.1993.

Offshore platform containing floating housing and floating support, pivotally connected to the housing can be rotated relatively to the axis of the connection, characterized in that for ease of installation and operation in conditions of shallow water, floating support and the casing is made of spatial pontoon blocks, and some of the floating transom supports pivotally connected to the housing, and the other is rigidly attached to the bottom, with floating supports are made with the possibility of changing their buoyancy and with fixation at different angles relative to the body when lifting above the water level.

 

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4 cl, 22 dwg

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