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Three-way pipe capable of forming 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: 2021-07-27
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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  • Three-way pipe capable of forming oil-water annular flow
  • Three-way pipe capable of forming oil-water annular flow
  • Three-way pipe capable of forming oil-water annular flow

Examples

Experimental program
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Effect test

Embodiment 1

[0036] see Figure 1-Figure 6 , The tee pipe capable of forming an oil-water annular flow of the present invention includes a pipe body 1 and a stability maintaining device arranged in the pipe body 1 for re-maintaining the unstable oil-water annular flow after diversion.

[0037] see Figure 1-Figure 6 , the stability maintenance device is arranged in the same flow pipe and the different flow pipe in the pipe body 1 (wherein, the different flow pipe refers to the non-axial (for example vertical) The intersection of flow passages), including the diversion chamber 2 arranged in the pipe body 1, the diversion chamber 2 is provided with diversion pipes 2-6 for communicating with the flow pipes in the same direction and the flow pipes in different directions ; The diversion cavity 2 is also provided with a water film forming channel 2-4, the water film forming channel 2-4 extends along the extension direction of the diversion pipe 2-6, and is connected with the water inlet channe...

Embodiment 2

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

[0052] The tee 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, and the adjustment mechanism includes a deflector 3 and an adjustment knob 4, wherein the deflector The plate 3 is rotatably connected to the end of the diversion 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, installed on the arc-shaped fixed plate located inside 2-5, one end of the rotating shaft 2-9 extends out of the pipe body 1 and is connected to the adjustment knob 4, wherein the rotating shaft 2-9 is 50 mm beyond one side of the pipe body 1 ( This data can be adjusted flexibly according to the actual situation), which is conducive to the installation and positioning of the adjustment knob 4. By turning the adjustment knob 4, the direction...

Embodiment 3

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

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

[0057] from Figure 13 It can be seen in Fig. 1 that after the diversion, the manifolds of the oil-water annular flow at the two outlets are destroyed. During transportation, most of the thick oil with higher viscosit...

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Abstract

The invention discloses a three-way pipe capable of forming oil-water annular flow. The three-way pipe comprises a pipe body and a stability maintaining device arranged in the pipe body, wherein the stability maintaining device is arranged at the intersection between a same-direction circulation pipeline and a different-direction circulation pipeline in the pipe body, and the three-way pipe comprises a flow guide cavity; a flow guide pipeline for communicated the same-direction circulation pipeline with the different-direction circulation pipeline is arranged in the flow guide cavity; a water film forming channel is further arranged in the flow guide cavity, extends in the extending direction of the flow guide pipeline, is of an open structure and is communicated with a water admission channel; and the water film forming channel is communicated with the flow guide pipeline through a first water inlet, and the water film forming channel is communicated with the outer surface of the flow guide cavity through a second water inlet. According to the three-way pipe, a water film is formed at the flow dividing position through the flow guide cavity, and the water film wraps the surface of divided thick oil again, so that it is guaranteed that the manifold of the oil-water annular flow is not damaged when the oil-water annular flow is divided in the three-way pipe, and thus conveying of the oil-water annular flow is facilitated.

Description

technical field [0001] The invention relates to heavy oil transportation 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 oils have been exploited. According to data, the geological reserves of heavy oil in my country are very rich. It is easy to adhere to the pipe wall, and sufficient energy must be provided to overcome the flow resistance during the production and transportation process; in addition, high-wax heavy oil has a high freezing point, and wax crystals are easy to precipitate during the flow process to block the pipe. It has brought great challenges to the exploitation and transportation of heavy oil. [0003] At present, heavy oil is one of the most exploited resources in my country in recent years. The oil-water annular flow transportation method is often used to transport heavy oil, that is, heavy oil with high viscosity is wrapped by a low-visc...

Claims

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Application Information

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Patent Type & Authority Applications(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