RU2163278C2 - Sea platform - Google Patents

Abstract

FIELD: hydraulic engineering; water-development works in shallow water areas of continental shelf. SUBSTANCE: sea platform includes floating hull and floating supports made from hermetic structures possessing varying buoyancy; they are connected with hull for turn relative to axis of joint and mounted at different angles relative to hull; some transoms of supports are articulated with hull and other transoms are rigidly secured to it. EFFECT: facilitated mounted and ease of operation of floating supports. 4 dwg

Description

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

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

 Known designs for reducing rolling, protecting the body from damage and hanging the platform above the water surface [1, 2, 3 and 4].

 The objective of the invention is to simplify the installation and operation of the platform in shallow water.

 The offshore platform contains a floating hull 1 and floating supports 2. The floating hull consists of pontoons of the type pontoons of a pontoon bridge park connected in series [5]. Floating supports are made of pontoons such as pontoons of a pontoon park [6]. The floating supports of one extremity are pivotally attached to the housing with the possibility of rotation about the axis of attachment.

 In FIG. 1 shows a floating platform at the initial stage of its installation, when the floating supports 2, which are given positive buoyancy, are pivotally attached to the housing 1 in the surface position.

 In FIG. 2 - the same, in the intermediate phase, when, at a sufficient depth of the water area, the floating supports 2 are given negative buoyancy for installation in a predetermined underwater position in which the supports are rigidly fixed in a hinge joint.

 In FIG. 3 - an intermediate position at which the floating supports 2 are set to positive buoyancy, due to which the floating body 1 is installed in the surface position in which the platform is transported to a shallow area.

 In FIG. 4 - the final stage of the installation of the platform, in which in a shallow area in the floating supports 2 synchronously decreases the positive buoyancy and the platform is installed stably due to the free ends touching the bottom of the water area.

 The removal of the platform from the shallow area is carried out in the reverse order. The use of the same type of pontoon blocks in the design of the offshore platform provides for simplified installation (dismantling) in shallow areas of the continental shelf.

Sources of information
1.SU 1437479 A1, 11/15/1988.

 2. SU 1550036 A1, 03/15/1990.

 3. Arkhangelsk I.V. Marine engineering and geological drilling - M .: Nedra, 1980.

 4. Arkhangelsk I.V. Well drilling in the coastal zone of the seas - L .: Nedra, 1975.

 5. Guide to the pontoon-bridge park PMP. - M .: Military Publishing House, 1965.

 6.SU 1827406 A1, 07.15.1993.

Claims (1)

 An offshore platform comprising a floating hull and floating supports, pivotally connected to the hull with the possibility of turning them about the axis of connection, characterized in that to simplify installation and operation in shallow water, the floating supports and the hull are made of spatial pontoon blocks, with one transom of floating supports pivotally connected to the body, and others are rigidly attached to the bottom, while the floating supports are made with the possibility of changing their buoyancy and fixing at different angles relative to the body when odeme above the water level.

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