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Crude oil conveying pipeline system and crude oil conveying method thereof

A technology for transporting pipelines and crude oil, which is applied in the crude oil transportation pipeline system and its field of crude oil transportation. It can solve the problems of lower crude oil temperature, large transportation energy consumption, and increased crude oil viscosity, so as to reduce transportation resistance, avoid direct contact, and reduce transportation costs. Effect

Inactive Publication Date: 2014-12-10
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the process of conventional crude oil transportation, the crude oil directly contacts the inner wall of the pipeline. Due to the high viscosity of crude oil, it often results in a large amount of transportation energy consumption.
And with the progress of the transportation process, the temperature of crude oil continues to decrease, and the viscosity of crude oil continues to increase, which in turn causes the energy consumption of crude oil transportation to increase continuously, and the cost of crude oil transportation continues to increase

Method used

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  • Crude oil conveying pipeline system and crude oil conveying method thereof
  • Crude oil conveying pipeline system and crude oil conveying method thereof
  • Crude oil conveying pipeline system and crude oil conveying method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A crude oil transportation pipeline system, comprising an outer pipe 1 and an inner pipe 3, the inner pipe 3 is set inside the outer pipe 1, the inner pipe 3 is filled with crude oil, and a positioning block 2 is installed between the inner pipe 3 and the outer pipe 1, A closed cavity is formed between the inner tube 3 and the outer tube 1, and the high-pressure liquid filled in the cavity is a low-viscosity liquid that is easily obtained such as condensate oil or light oil or oilfield production water, and the pressure is 0.5MPa-15MPa.

[0026] There are a plurality of swirl holes 4 on the inner pipe wall from the outer surface to the inner surface. The swirl holes 4 are evenly distributed on the inner pipe wall. The ratio of the diameter of the swirl holes to the diameter of the inner pipe is 0.001-0.02, so as to form a uniform conveying medium layer. The swirl holes obliquely intersect with the inner pipe wall, and the included angles formed by each swirl hole and th...

Embodiment 2

[0033] A crude oil transportation pipeline system, including an outer pipe and an inner pipe, the inner pipe is set inside the outer pipe, the inner pipe is filled with crude oil, a positioning block is installed between the inner pipe and the outer pipe, and the inner pipe and the outer pipe form a The airtight cavity, the high-pressure gas that can also be filled in the cavity is an inert gas such as natural gas or nitrogen, and the pressure is 0.5MPa-15MPa.

[0034] There are multiple swirl holes on the inner pipe wall from the outer surface to the inner surface, and the swirl holes are evenly distributed on the inner pipe wall. The ratio of the diameter of the swirl holes to the diameter of the inner pipe is 0.001-0.02, so as to form a uniform conveying medium layer. The swirl holes obliquely intersect with the inner pipe wall, and the included angles formed by each swirl hole and the tangent plane of the swirl hole inlet are consistent. The swirl hole connects the inner ...

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Abstract

The invention discloses a crude oil conveying pipeline system and a crude oil conveying method of the crude oil conveying pipeline. The crude oil conveying pipeline system comprises an outer pipe and an inner pipe, wherein the inner pipe is sleeved with the outer pipe. The inner pipe is filled with crude oil. Locating blocks are additionally arranged between the inner pipe and the outer pipe. A sealed cavity is formed between the inner pipe and the outer pipe. The cavity is filled with high-pressure liquid or high-pressure gas. A plurality of cyclone holes are formed in the wall of the inner pipe from the outer surface to the inner surface. The cyclone holes are communicated with the inner pipe and the cavity. According to the crude oil conveying method based on the crude oil conveying pipeline system, during conveyance of crude oil, the high-pressure liquid or the high-pressure gas in the cavity forms an even stable conveyance medium layer on the face of the inner wall of the inner pipe after passing through the cyclone holes, crude oil is wrapped and prevented from being in direct contact with the inner pipe, the crude oil conveyance resistance is reduced, and the problem that conveyance energy loss is large due to the fact that conveyed crude oil is in direct contact with the conveying pipeline is solved.

Description

technical field [0001] The invention relates to a crude oil transportation pipeline system and a crude oil transportation method thereof. Background technique [0002] In the process of conventional crude oil transportation, crude oil directly contacts the inner wall of the pipeline. Due to the high viscosity of crude oil, it often results in a large amount of transportation energy consumption. And with the progress of the transportation process, the temperature of crude oil continues to decrease, and the viscosity of crude oil continues to increase, which in turn causes the energy consumption of crude oil transportation to increase continuously, and the cost of crude oil transportation continues to increase. Contents of the invention [0003] In order to solve the deficiencies of the prior art, the present invention proposes a crude oil transportation pipeline system and its crude oil transportation method. The present invention takes necessary technical measures to reduc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17D1/16F16L9/14F16L55/00
Inventor 蒋文明刘杨边江石念军付法栋王英伟
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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