Numerical Simulation of Pressure Loss of Crossing Bridge Short Joints of Layered Water Injection Tool Based on Fluent

doi:10.3969/j.issn.1006-396X.2021.06.010

Abstract

Abstract:

Layered water injection tool is the core part of layered water injection system,which is of great significance to the development of layered water injection technique.In order to study the influence of different pipeline roughness and flow rate on friction and pressure consumption of crossing bridge short joints of layered water injection tools,Fluent software is used.The simulation results show that the flow rate of crossing bridge short joints of layered water injection tool is 500~2 000 m³/d,the pressure consumption range of the outer pipe is 1.90×10⁴~6.61×10⁵ Pa,and the pressure consumption of the inner pipe is 3.61×10⁵~4.03×10⁶ Pa.When the roughness is constant,the larger the liquid flow would induce greater the local resistance and the greater the friction pressure consumption of the layered water injection tool.The effect of pipeline roughness on friction and pressure loss is small and can be ignored.The above research results can provide the basis for the design and parameter selection of the new layered water injection pipeline.

Key words: Fluent, Layered water injection tool, Crossing bridge short joints, Flow

摘要：

分层注水工具是分层注水系统中的核心部件，对分层注水开发具有十分重要的意义。为研究不同管道粗糙度、不同流量对分层注水工具过桥短节摩阻压耗的影响，利用Fluent软件进行模拟分析。结果表明，分层注水工具过桥短节流量为500~2 000 m³/d工况下，外管压耗为 $1.90 × 104 ~ 6.16 × 105$ $? P a$ ，内管压耗为 $3.61 × 105 ~ 4.03 × 106 ? P a$ ；当粗糙度不变时，液体流量越大，引起的局部阻力越大，引起的分层注水工具摩阻压耗越大，管道粗糙度对摩阻压耗的影响较小,可以忽略不计。以上研究结果为新分层注水管道设计及参数的选择提供了依据。

关键词: Fluent, 分层注水工具, 过桥短节, 流量

CLC Number:

TE832

Ligang Zhang, Juanping Lou, Xiaohong Wen, Xitian Chen, Zhaoyi Liu, Daokun Sun, Jiaxing Tan. Numerical Simulation of Pressure Loss of Crossing Bridge Short Joints of Layered Water Injection Tool Based on Fluent[J]. Journal of Petrochemical Universities, 2021, 34(6): 64-69.

张立刚, 娄绢平, 温晓红, 陈喜田, 刘照义, 孙道坤, 谭甲兴. 基于Fluent分层注水工具过桥短节的压力损失数值模拟[J]. 石油化工高等学校学报, 2021, 34(6): 64-69.

Figures/Tables 8

Fig.1 Physical model

Table 1 Data sheet of bridge section

类别	外径/mm	内径/mm	壁厚/mm
电动推杆	50.0	-	-
内管	73.0	62.0	5.51
外管	114.3	99.6	7.37
出水口	45.0	38.0	3.50

Fig.2 Relationship between mesh number and friction pressure loss

Fig.3 Grid division diagram

Table 2 Comparison of turbulence model results

2 000

Table 3 Simulation conditions

工况序号	管道粗糙度/mm	流量/(m³ $⋅$ d^-1)
1	0.1	500
2	0.1	1 000
3	0.1	1 500
4	0.1	2 000
5	0.2	500
6	0.2	1 000
7	0.2	1 500
8	0.2	2 000

Table 3 Simulation conditions

工况序号	管道粗糙度/mm	流量/(m³ $⋅$ d^-1)
1	0.1	500
2	0.1	1 000
3	0.1	1 500
4	0.1	2 000
5	0.2	500
6	0.2	1 000
7	0.2	1 500
8	0.2	2 000

Fig.4 Pressure cloud diagram and velocity vector diagram with different roughness and flow

Fig.5 Outer pipe and inner pipe pressure

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