Buoyancy mounting method for blocks

An installation method and block technology, which are applied in transportation and packaging, ship parts, ships, etc., can solve the problems of not being able to ensure that the project is put into production on schedule, affecting the project duration, etc., so as to shorten the offshore operation time, reduce installation and tugboat transportation, high precision effect
CN102963494AActive Publication Date: 2013-03-13CHINA NAT OFFSHORE OIL CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA NAT OFFSHORE OIL CORP
Publication Date
2013-03-13

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Abstract

The invention discloses a buoyancy mounting method for blocks. The method comprises the following steps of: (1) arranging block jointing devices on struts of the blocks to be arranged in advance; (2) transversely mooring a power positioning ship to a wharf, wherein the heights of sliding ways of the wharf are ensured to be consistent with those of sliding ways on a main deck of the power positioning ship; (3) dragging the blocks onto the power positioning ship for fixed welding, wherein the power positioning ship has self-propulsion capability and power positioning capability; and (4) propelling the power positioning ship to conduit supports to be arranged, propelling the power positioning ship to notches of the conduit supports, jointing the blocks and the conduit supports when the power positioning ship reaches the jointing positions of the blocks, and propelling the power positioning ship out of the notches of the conduit supports to finish the buoyancy mounting of the blocks after the blocks are jointed. The method can be widely applied to the entire buoyancy operation of the blocks, in particular to block mounting under severe environmental conditions in the south sea of China, the development cost of oil and gas fields is saved, and the efficiency is improved.
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Description

technical field

[0001] The invention relates to a block float-over installation method, which belongs to the technical field of on-site installation of marine engineering. Background technique

[0002] The offshore fixed platform is composed of the upper block and the jacket. For the installation of the upper block, there are generally two ways of block hoisting installation and integral float-over installation. In recent years, with the increasing development of oil and gas resources in my country, the fixed platforms used are gradually becoming larger, and the blocks and jackets tend to be larger in both volume and weight. With the increase in the size and weight of the upper block, considering the limitation of floating crane resources and the longer offshore commissioning time, the overall float-over installation has gradually become the trend of the upper block installation.

[0003] At present, the float-over installation of blocks in my country's sea areas is carried...

Claims

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