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

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

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.

A Unified Model of Oil/Water Two-Phase Flow in the Horizontal Wellbore

SPE Journal ◽  
2016 ◽  
Vol 22 (01) ◽  
pp. 353-364 ◽  
Author(s):  
Zhiming Wang ◽  
Quan Zhang ◽  
Quanshu Zeng ◽  
Jianguang Wei
Keyword(s):  
Two Phase Flow ◽  
Mechanistic Model ◽  
Variable Mass ◽  
Flow Patterns ◽  
Phase Flow ◽  
Phase Variable ◽  
Two Phase ◽  
Horizontal Wellbore ◽  
Oil Water ◽  
Variable Mass Flow

Summary In this article, a more-general flow-pattern classification of oil/water two-phase flow in the horizontal wellbore is proposed first according to the theoretical analysis and previous research achievements, on the basis of which a simplification is then performed through reasonable incorporation, and the ultimate flow patterns considered for modeling are reduced to two categories containing only six standard patterns. By use of the classical two-fluid and homogeneous modeling methodologies stemming from oil/water two-phase flow in conventional pipes, combined with the simplified classification, a mechanistic model is developed to predict the flow characteristics including the flow patterns and pressure losses for oil/water two-phase variable-mass flow in the horizontal wellbore. Model implementation is performed on the basis of the universal principle that a system will stabilize to the equilibrium state of minimum energy. Overall performance of the mechanistic model is then validated against the new data sets measured upon a large-scale experimental apparatus at the China University of Petroleum (CUP), which is designed and constructed to simulate the gas/oil/water multiphase flow in horizontal wellbores with wall mass transfer. Results show that the model developed in this paper can not only properly predict the flow patterns of oil/water two-phase flow in the horizontal wellbore, but also has high prediction accuracy for the pressure drops. Compared with the new experimental data for oil/water two-phase variable-mass flow that covers a series of input water-volumetric fractions ranging from 10 to 90%, the highest absolute average percentage error of the new unified model is 12% and the whole error is 9.2%, which demonstrates an acceptable performance. Investigations conducted in this study further enrich and develop the theory of hydrodynamic calculation for oil/water flow in the horizontal wellbore with wall influx.

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