Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Buoyancy mounting method for blocks

An installation method and block technology, applied in the direction of transportation and packaging, ship parts, ships, etc., can solve the problems that the project cannot be guaranteed to be put into production on schedule and affect the project duration, so as to shorten the offshore operation time, reduce installation and tugboat transportation, cost reduction effect

Active Publication Date: 2015-04-29
CHINA NAT OFFSHORE OIL CORP +1
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially in the harsh environment in the South China Sea, if the 36-hour safety climate window cannot be guaranteed, the floatover operation will be postponed to a suitable climate window, which will seriously affect the project schedule and cannot guarantee that the project will be put into production as scheduled

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Buoyancy mounting method for blocks
  • Buoyancy mounting method for blocks
  • Buoyancy mounting method for blocks

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The experimental methods used in the following examples are conventional methods unless otherwise specified.

[0028] The materials and reagents used in the following examples can be obtained from commercial sources unless otherwise specified.

[0029] In the early stage of construction, it is necessary to design the appropriate number of slideways on the dynamic positioning ship according to the weight center of gravity of the block and the conditions of the slideway at the construction site, generally 2 to 4; the number of slideways on the wharf and the main deck of the dynamic positioning ship The number of slides on the track can be different or equal. Sliding shoes or DSF (Deck Support Frame) shall be built on the slipway on the pier, and DSU shall be installed on the slipping shoe or DSF, wherein, the slipping shoe is matched with the slipway on the dynamic positioning ship; 4~8 LMUs (set block docking device) mounted on the pillars of the block.

[0030] Such a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

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.

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B63B9/00
Inventor 李达白雪平李新仲陈荣旗邱里侯金林贾旭范模刘聪易丛付殿福
Owner CHINA NAT OFFSHORE OIL CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com