Plugging device and plugging method for annular space of submarine double-layer oil conveying pipe

A technology of annular space and plugging devices, which is applied in pipeline laying and maintenance, pipes/pipe joints/fittings, mechanical equipment, etc., can solve problems such as sealing failure, and achieve the effect of overcoming the problem of plugging failure

Inactive Publication Date: 2014-11-26
CHINA NAT OFFSHORE OIL CORP +2
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to avoid the deficiencies in the prior art and provide a sealing device and sealing method for the annular space of the double-layer oil pipeline on the seabed. The problem of thermal expansion and elongation leading to seal failure

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
  • Plugging device and plugging method for annular space of submarine double-layer oil conveying pipe
  • Plugging device and plugging method for annular space of submarine double-layer oil conveying pipe
  • Plugging device and plugging method for annular space of submarine double-layer oil conveying pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. And the features in the embodiments can be combined with each other.

[0028] The core of the present invention is to provide a sealing device and sealing method for the annular space of the double-layer oil pipeline on the seabed, which adopts the card-in-card form, and is equipped with a sealant and concrete materials to solve the problem of thermal expansion and elongation caused by oil temperature changes, resulting in sealing failure. question. The structural design is simple, and the material is easy to obtain, thereby greatly saving the cost.

[0029] Such as figure 1 As shown, the annular space sealing device of the submarine double-layer oil pipeline according to the present invention, the oil pipeline includes 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 plugging device and plugging method for an annular space of a submarine double-layer oil conveying pipe. The oil conveying pipe comprise an outer pipe (14) and an inner pipe (13); one end of the inner pipe (13) stretches out of the outer pipe (14); the plugging device comprises an inner sleeve type pipe clamp (1) and an outer sleeve type pipe clamp (7); one end of the inner sleeve type pipe clamp (1) is matched with the outer wall of the outer pipe (14) in a sealing manner while the other end thereof is matched with the outer wall of the inner pipe (13) in the sealing manner; the inner sleeve type pipe clamp (1) is internally filled with a sealing agent (5); the outer sleeve type pipe clamp (7) is sleeved outside the inner sleeve type pipe clamp (1); one end of the outer sleeve type pipe clamp (7) is matched with the outer wall of the outer pipe (14) in the sealing manner while the other end thereof is matched with the outer wall of the inner pipe (13) in the sealing manner; and the outer sleeve type pipe clamp (7) is internally filled with concrete (12). As the clamp-in-clamp form is adopted, and the sealing agent and the concrete material are used in the invention, the problem of sealing failure caused by thermal elongation which is resulted from the change of the oil temperature is solved.

Description

technical field [0001] The utility model relates to a seabed pipeline repair device, in particular to a seabed double-layer oil pipeline annular space sealing device, and the invention also relates to a sealing method. Background technique [0002] At present, submarine pipelines have single and double-layer pipes. Single-layer pipes are mainly used for single medium transportation of water and gas at sea; double-layer pipes are used for condensable crude oil or mixed transportation (oil, gas, water) combined medium transportation. . Due to the variety of chemical elements in the crude oil and the mixed transport medium, the inner wall of the pipeline will be corroded. After a long period of corrosion, the pipeline will leak. In severe cases, production will be stopped, resulting in economic losses in the oil field. In order to minimize such losses, it is necessary to promptly and quickly repair damaged pipelines. At present, the main difficulty in the repair of double-lay...

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): F16L1/26
Inventor 柯吕雄唐广荣崔嵘熊永功戴毅姚新周立臣杨波高景辉李宝钢武国营蒋日新李国权余瑞明许振斌张西迎王翎羽郑树峰
Owner CHINA NAT OFFSHORE OIL CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products