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A three-way pipe that can form an oil-water annular flow

A technology of annular flow and tee pipes, which is applied in the field of tee pipes, can solve problems such as manifold damage of oil-water annular flow, influence on the transportation of oil-water annular flow, instability, etc., and achieve the effect of ensuring smooth transportation

Active Publication Date: 2022-07-05
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, this transportation method of oil-water annular flow will cause instability at the diversion point of the tee pipe, that is, the manifold of the oil-water annular flow will be destroyed, which will cause the heavy oil to break through the water film wrapped on its surface and adhere On the inner side of the pipe wall of the tee pipe, it affects the transportation of the oil-water annular flow, thereby affecting the transportation of heavy oil

Method used

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  • A three-way pipe that can form an oil-water annular flow
  • A three-way pipe that can form an oil-water annular flow
  • A three-way pipe that can form an oil-water annular flow

Examples

Experimental program
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Effect test

Embodiment 1

[0036] see Figure 1-Figure 6 , The three-way pipe capable of forming an oil-water annular flow of the present invention includes a pipe body 1 and a stability maintenance device arranged in the pipe body 1 for re-stabilizing the oil-water annular flow that is destabilized after being split.

[0037] see Figure 1-Figure 6 , the stability maintenance device is arranged in the same-direction circulation pipe and the different-direction circulation pipe in the pipe body 1 (wherein, the different-direction circulation pipe refers to the non-axial (for example, vertical) direction of the inlet in the tee pipe) The junction of the flow channel), including the guide cavity 2 arranged in the pipe body 1, and the guide cavity 2 is provided with the guide pipes 2-6 for communicating the same-direction circulation pipes and the opposite-direction circulation pipes. ; The guide cavity 2 is also provided with a water film forming channel 2-4, the water film forming channel 2-4 extends al...

Embodiment 2

[0051] see Figure 7-Figure 12 , the difference between this embodiment and Embodiment 1 is:

[0052] The three-way pipe in this embodiment also includes an adjustment mechanism for adjusting the size of the opening 2-10 of the water film forming channel 2-4, the adjustment mechanism includes a baffle 3 and an adjustment knob 4, wherein the flow guide The plate 3 is rotatably connected to the end of the guide cavity 2 located at the lower end of the opening 2-10 of the water film forming channel 2-4 through the rotating shaft 2-9, that is, it is installed on the inner arc-shaped fixing plate On 2-5, one end of the rotating shaft 2-9 extends out of the pipe body 1 and is connected to the adjusting knob 4, wherein the rotating shaft 2-9 should exceed one side of the pipe body 1 by 50mm ( This data can be flexibly adjusted according to the actual situation), which is beneficial to the installation and positioning of the adjustment knob 4. By turning the adjusting knob 4, the di...

Embodiment 3

[0055] In order to have a more comprehensive understanding of the three-way pipe that can form an oil-water annular flow of the present invention, a three-dimensional comparative simulation experiment was carried out on the ordinary three-way pipe without the stability maintenance device and the three-way pipe with the stability maintenance device.

[0056] see Figure 13 and Figure 14 ,in, Figure 13 is the ANSYS simulation diagram of the manifold of the oil-water annular flow of the ordinary tee without adding the diversion cavity 2; Figure 14 It is an ANSYS simulation diagram of the manifold of the oil-water annular flow added to the tee pipe of the diversion cavity 2, wherein the numeral 5 is the water phase (water film); the numeral 6 is the oil phase (heavy oil).

[0057] from Figure 13 It can be seen that after the split, the manifold of the oil-water annular flow at the two oil outlets is destroyed. During transportation, most of the heavy oil with high viscosit...

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Abstract

The invention discloses a three-way pipe capable of forming an oil-water annular flow. It includes a diversion cavity, which is provided with a diversion pipeline for connecting the same-direction circulation pipeline and the opposite-direction circulation pipeline; the diversion cavity is also provided with a water film forming channel, and the water film forming The channel extends along the extension direction of the guide pipe, is an open structure, and communicates with the water inlet channel; the water film forming channel is communicated with the guide pipe through the first water inlet, and the water film forming channel passes through The second water inlet communicates with the outer surface of the guide cavity. The three-way pipe of the present invention forms a water film at the shunt through the diversion cavity, so that it is re-wrapped on the surface of the heavy oil after the diversion, so as to ensure that the oil-water annular flow does not destroy the flow of the oil-water annular flow when the oil-water annular flow is divided in the tee-pipe shape, which is conducive to the transportation of oil-water annular flow.

Description

technical field [0001] The invention relates to heavy oil conveying equipment, in particular to a three-way pipe capable of forming an oil-water annular flow. Background technique [0002] In recent years, more and more unconventional oil has been exploited. According to some data, the geological reserves of heavy oil in my country are very rich. However, due to the high content of colloid and asphaltene in heavy oil, its density is high, viscosity is high, and fluidity is poor. It is very easy to adhere to the pipe wall, and it is necessary to provide enough energy to overcome the flow resistance during the production and transportation process; in addition, the high waxy heavy oil has a high freezing point, and it is easy to precipitate wax crystals during the flow process to block the pipeline. It brings great challenges to the exploitation and transportation of heavy oil. [0003] At present, heavy oil, as one of the most exploited resources in my country in recent years,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L41/02F16L55/02
CPCF16L41/021F16L55/02Y02E10/20
Inventor 江帆谢智铭黄海涛刘晨曦
Owner GUANGZHOU UNIVERSITY