The Experimental and Model Study on Variable Mass Flow for Horizontal Wells With Perforated Completion

2017 ◽  
Vol 139 (6) ◽  
Author(s):  
Wei Jianguang ◽  
Lin Xuesong ◽  
Liu Xuemei ◽  
Ma Yuanyuan
Keyword(s):  
Pressure Drop ◽  
Mass Flow ◽  
Variable Mass ◽  
Axial Flow ◽  
Horizontal Wells ◽  
Calculation Model ◽  
Frictional Pressure Drop ◽  
Model Study ◽  
Fluid Boundary ◽  
Variable Mass Flow

The variable mass flow in perforated horizontal wells is very complex. One reason is that the perforation can increase the roughness of the pipe wall which will increase the frictional pressure drop. The other is the fluid boundary layer and velocity profile of axial flow will be changed due to the “mixing” of the inflow with the axial flow. The influences of the perforation parameters and flux rate on the pressure drawdown in horizontal wellbore are investigated. The perforation parameters include perforation phasing, perforation diameter, and perforation density. According to the experiment results, some modes such as friction factor calculation model (the accuracy of the model is 4%), “mixing” pressure drop calculation model (the accuracy of the model is 3%), and total pressure drop calculation model (the accuracy of the model is 2%) are developed.

scholarly journals Development and application of wellbore heat transfer model considering variable mass flow

2020 ◽  
Author(s):  
Jiangshuai Wang ◽  
Jun Li ◽  
Gonghui Liu ◽  
Shujie Liu ◽  
Meipeng Ren ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Mass Flow ◽  
Variable Mass ◽  
Heat Transfer Model ◽  
Transfer Model ◽  
Variable Mass Flow

Evaluation of Two-Phase Frictional Pressure Drop Correlations Against Experimental Data

2019 ◽  
Vol 12 (3) ◽  
Author(s):  
Wei Li ◽  
Kunrong Shen ◽  
Boren Zheng ◽  
Xiang Ma ◽  
S. A. Sherif ◽  
...  
Keyword(s):  
Experimental Data ◽  
Pressure Drop ◽  
Mass Flow ◽  
Flow Model ◽  
Saturation Temperature ◽  
Separated Flow ◽  
Outer Diameter ◽  
Two Phase ◽  
Homogeneous Flow ◽  
Frictional Pressure Drop

Abstract Results are presented here from an experimental investigation on tube side two-phase characteristics that took place in four tested tubes—the 1EHT-1, 1EHT-2, 4LB, and smooth tubes. The equivalent outer diameter of the tube was 9.52 mm and the inner diameter was 8.32 mm. Condensation tests were conducted using refrigerant R410A at a saturation temperature of 318 K, over a mass flow range of 150–450 kg m−2 s−1, with inlet and outlet vapor qualities of 0.8 and 0.2, respectively. Evaporation tests were performed at a saturation temperature of 279 K, over a mass flow range of 150–380 kg m−2 s−1, with inlet and outlet vapor qualities of 0.2 and 0.8, respectively. Pressure drop data of the four tested tubes were collected to evaluate five identified prediction correlations based on the separated flow model and the homogeneous flow model. The separated flow approaches presented predictions with average MAEs of 24.9% and 16.4% for condensation and evaporation data, respectively, while the average MAEs of the homogeneous flow model were 31.6% and 43.4%, respectively. Almost all the identified correlations underestimated the frictional pressure drop of the 4LB tube with MAEs exceeding 30%. An earlier transition of different flow patterns was expected to occur in the EHT tubes while developing a new diabatic flow pattern map is needed for the 4LB tube. A new correlation was presented based on the two-phase multiplier Φ and the Martinelli parameter Xtt, which exhibited excellent predictive results for the experimental data.

scholarly journals Experimental analysis and numerical simulation of variable mass flow in horizontal wellbore

2018 ◽  
Vol 36 (1) ◽  
pp. 309-318
Author(s):  
Jing Wen ◽  
Ming Yang ◽  
Weilin Qi ◽  
Jing Wang ◽  
Qian Yuan ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Mass Flow ◽  
Experimental Analysis ◽  
Variable Mass ◽  
Horizontal Wellbore ◽  
Variable Mass Flow
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