Unlock instant, AI-driven research and patent intelligence for your innovation.

Composite flexible pipe for deep sea oil and gas engineering and manufacturing method thereof

A composite flexible, oil-gas technology, applied in the field of flexible pipes, can solve the problems of heavy weight of metal-reinforced flexible pipes, general temperature resistance and mechanical properties of glass fibers, complex preparation of carbon fibers, etc., and achieve excellent comprehensive dynamic characteristics, corrosion resistance and good installation adaptive effect

Active Publication Date: 2019-05-14
SOUTH CHINA UNIV OF TECH
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both steel pipes and metal-reinforced flexible pipes are heavy and steel pipes are easy to corrode; glass fiber or carbon fiber reinforced thermoplastic pipes are light in weight, but the temperature resistance and mechanical properties of glass fiber are average, and the preparation of carbon fiber is complicated and expensive. The scope of application of thermoplastic pipes is mainly in land or shallow sea areas

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
  • Composite flexible pipe for deep sea oil and gas engineering and manufacturing method thereof
  • Composite flexible pipe for deep sea oil and gas engineering and manufacturing method thereof
  • Composite flexible pipe for deep sea oil and gas engineering and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as figure 1 The shown composite flexible pipe for deep sea oil and gas engineering includes an inner liner 1, a composite belt compression layer 2 made of continuous basalt fiber composite material, an outer sheath layer 3, and at least two layers made of continuous basalt fiber composite material The composite tape tensile layer 4 and the wear-resistant layer 5 equal to the number of layers of the composite tape tensile layer 4; the inner lining layer 1, the composite tape compressive layer 2 and the outer sheath 3 layers are sequentially socketed; Between the belt compression layer 2 and the outer sheath layer 3, each layer of wear-resistant layer 5 and each layer of composite belt tensile layer 4 are alternately socketed in sequence. In this embodiment, the number of layers of the composite tape tensile layer 4 and the wear-resistant layer 5 is 2 layers, and the number of layers of the composite tape tensile layer and the wear-resistant layer can be determined a...

Embodiment 2

[0057] The composite flexible pipe for deep sea oil and gas engineering is the same as that of Embodiment 1 except for the following technical features:

[0058] The continuous basalt fiber composite material in the first winding flat belt is mainly composed of polyethylene, polypropylene and basalt fiber, wherein the mass percentage of polyethylene is 21%, and the mass percentage of polypropylene is 22%, while the mass percentage of the basalt fiber is 57%.

[0059] The helix angle of the first winding flat tape is 85° when it is wound on the inner liner.

[0060] The continuous basalt fiber composite material in the second winding flat belt is mainly composed of polyethylene, polypropylene and basalt fiber, wherein the mass percentage of polyethylene is 21%, and the mass percentage of polypropylene is 22%, while the mass percentage of the basalt fiber is 57%.

[0061] The helix angle of the second winding flat belt is 60° when it is wound on the wear-resistant layer.

Embodiment 3

[0063] The composite flexible pipe for deep sea oil and gas engineering is the same as that of Embodiment 1 except for the following technical features:

[0064] The continuous basalt fiber composite material in the first winding flat belt is mainly composed of polyethylene, polypropylene and basalt fiber, wherein the mass percentage of polyethylene is 33%, and the mass percentage of polypropylene is 18%, while the mass percentage of the basalt fiber is 49%.

[0065] The helix angle of the first winding flat tape is 90° when it is wound on the inner liner.

[0066] The continuous basalt fiber composite material in the second winding flat belt is mainly composed of polyethylene, polypropylene and basalt fiber, wherein the mass percentage of polyethylene is 33%, and the mass percentage of polypropylene is 18%, while the mass percentage of the basalt fiber is 49%.

[0067] The helix angle of the second winding flat belt is 20° when it is wound on the wear-resistant layer.

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

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a composite flexible pipe applied to deepwater oil and gas engineering. The composite flexible pipe comprises a lining layer, a composite belt compressive layer made of a continuous basalt fiber composite material, an outer sheath layer, at least two composite belt tensile layers made of the continuous basalt fiber composite material, and abrasion-proof layers, wherein the number of the abrasion-proof layers is equal to that of the composite belt tensile layers; the lining layer, the composite belt compressive layer and the outer sheath layer are successively sleeved with each other; the abrasion-proof layers and the composite belt tensile layers are successively sleeved with each other between the composite belt compressive layer and the outer sheath layer. Meanwhile, the invention also provides a manufacturing method of the composite flexible pipe applied to deepwater oil and gas engineering. The composite flexible pipe has high corrosion resistance, temperature resistance and mechanical property and is more applicable to the deepwater environment and 3000m ultra-deepwater environment.

Description

technical field [0001] The invention relates to flexible pipe technology, in particular to a composite flexible pipe for deep sea oil and gas engineering and a manufacturing method thereof. Background technique [0002] With the growth of global oil and gas extraction, the demand for pipelines used in deep sea oil and gas extraction is increasing. The working conditions of deep-sea oil and gas development are complex. When the water depth is greater than 2,000 meters, the pressure and temperature of the oil and gas produced are very high, which has high requirements on the performance of pipelines in terms of fatigue resistance, high pressure resistance, high temperature resistance, and corrosion resistance. [0003] At present, offshore oil and gas exploration pipelines are mainly steel pipes, metal-reinforced flexible pipes, and some glass fiber or carbon fiber reinforced thermoplastic pipes. Both steel pipes and metal-reinforced flexible pipes are heavy and steel pipes a...

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): B29D23/00F16L11/14F16L57/06F16L57/04F16L58/04
CPCF16L11/14F16L57/04F16L57/06F16L58/04B29D23/001
Inventor 陈超核庞国良
Owner SOUTH CHINA UNIV OF TECH