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Pipeline assembly and method of installation

A technology of pipe assembly and pipe assembly, applied in the direction of pipe laying and maintenance, pipe/pipe joint/pipe fitting, pipe, etc., can solve problems such as pipe damage, installation difficulty, and cathodic protection is not absolutely reliable.

Active Publication Date: 2020-11-20
PETRONAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, cathodic protection is not infallible and if a portion of the sacrificial anode fails in a single area, the ensuing corrosion can cause severe damage to the entire pipeline
[0003] Non-corrosive materials such as non-metallic pipe (NMP) are generally not suitable for a variety of reasons including the inherent problem of having a specific gravity similar to water and thus making installation difficult due to relative buoyancy

Method used

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  • Pipeline assembly and method of installation
  • Pipeline assembly and method of installation
  • Pipeline assembly and method of installation

Examples

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Embodiment Construction

[0011] While the invention is applicable to any installation from offshore to shoreline, the following examples will refer to drilling platforms.

[0012] figure 1 A schematic diagram of the installed pipeline 5 spanning between the first platform 10 and the second platform 15 is shown. The pipe comprises two different types of constructed pipes, a thermoplastic composite pipe (TCP) 40 and a reinforced thermoplastic pipe (RTP) 50 forming a connection 45 .

[0013] The first platform 10 comprises end fittings and hangers 20, 25 to which the pipes are mounted. I-pipes 30, 60 are provided from each rig 10, 15 to guide and point the tubing towards the base of the rig so that the tubing lies across the seabed. In order to obtain the correct curvature as the pipe moves from its roughly vertical position in the I-pipe to its horizontal position laying on the seabed, bend limiters 35, 55 are also provided, thereby controlling the amount of water drawn from each of the rigs. orienta...

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PUM

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Abstract

A method for installing a non-metallic pipeline assembly, the method comprising the steps of: forming a pipe assembly by coupling a load bearing member and counter weight to a non-metallic pipe; floating the pipe assembly proximate to the water surface until in position, then; permitting the pipe assembly to sink to the sea bed.

Description

technical field [0001] The present invention relates to the transport of hydrocarbons, in particular for offshore use. In particular, the invention relates to a pipeline system for said transportation and a device for installing said pipeline in offshore conditions. Background technique [0002] Piping for offshore use is often metallic, which in a marine environment will limit the life of the system. Cathodic protection is critical to maintaining the integrity of pipelines during service. However, cathodic protection is not infallible and if a portion of a sacrificial anode fails in a single area, the ensuing corrosion can cause severe damage to the entire pipeline. [0003] Non-corrosive materials such as non-metallic pipe (NMP) are generally not suitable for various reasons including the inherent problem of having a specific gravity similar to water and thus making installation difficult due to relative buoyancy. Contents of the invention [0004] In a first aspect, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L1/12F16L1/24F16L9/12
CPCF16L1/163F16L1/24F16L9/12F16L1/16F16L1/123F16L1/205F16L1/207
Inventor 爱·瓦扬·埃卡·普特拉穆赫德·法齐·斌·巴达尔丁
Owner PETRONAS
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