Numerical Simulation of Corrosion Inhibitor Transport in Pipelines Carrying Oil-Water Mixtures

2002 ◽  
Vol 124 (4) ◽  
pp. 239-245 ◽  
Author(s):  
Antonio Rojas-Figueroa ◽  
Yuri V. Fairuzov
Keyword(s):  
Crude Oil ◽  
Flow Model ◽  
Two Phase Flow ◽  
Fluid Model ◽  
Phase Flow ◽  
Water Mixture ◽  
Inhibitor Concentration ◽  
Two Phase ◽  
Injection Point ◽  
Oil Water

The transport of corrosion inhibitors in a pipeline carrying crude oil-water mixture has been studied using a transient liquid-liquid two-phase flow model. The fluid flow model (the hydrodynamic model) is based on a two-fluid model of two-phase flow. The model allows simulating the transfer of inhibitor from one phase to another (inhibitor partitioning) under steady-state and transient oil-water flow conditions. Both stratified and dispersed flow patterns can be modeled. Numerical simulations are presented to demonstrate the effects of topography of the line, locations of the inhibitor injection point, flow pattern, and partitioning of the inhibitor between the phases on the distribution of inhibitor concentration along the pipeline. The modeling can be used to predict the inhibitor volume needed to be injected (the dose rate) in order to provide the required inhibitor concentration in critical sections of crude-oil pipelines.

Numerical Simulation of Corrosion Inhibitor Transport in Pipelines Carrying Oil-Water Mixtures

2001 ◽  
Author(s):  
Antonio Rojas-Figueroa ◽  
Yuri V. Fairuzov
Keyword(s):  
Crude Oil ◽  
Flow Model ◽  
Two Phase Flow ◽  
Fluid Model ◽  
Phase Flow ◽  
Water Mixture ◽  
Inhibitor Concentration ◽  
Two Phase ◽  
Injection Point ◽  
Oil Water

Abstract The transport of corrosion inhibitors in a pipeline carrying crude oil-water mixture has been studied using a transient liquid-liquid two-phase flow model. The fluid flow model (the hydrodynamic model) is based on a two-fluid model of two-phase flow. The model allows simulating the transfer of inhibitor from one phase to another (inhibitor partitioning) under steady state and transient oil-water flow conditions. Both stratified and dispersed flow patterns can be modeled. Numerical simulations are presented to demonstrate the effects of topography of the line, locations of the inhibitor injection point, flow pattern, and partitioning of the inhibitor between the phases on the distribution of inhibitor concentration along the pipeline. The modeling can be used to predict the inhibitor volume needed to be injected (the dose rate) in order to provide the required inhibitor concentration in critical sections of crude-oil pipelines.

scholarly journals A Unified Model of Oil/Water Two-Phase Flow through the Complex Pipeline

Geofluids ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Qingchun Gao ◽  
Zhiming Wang ◽  
Quanshu Zeng
Keyword(s):  
Two Phase Flow ◽  
Fluid Model ◽  
Petroleum Industry ◽  
Unified Model ◽  
Percentage Error ◽  
Phase Flow ◽  
Two Phase ◽  
Pressure Drops ◽  
Flow Through ◽  
Oil Water

Oil-water two-phase flow through the complex pipeline, consisting of varying pipes and fittings in series or parallel, is commonly encountered in the petroleum industry. However, the majority of the current study is mainly limited to single constant-radius pipe. In this paper, a unified model of oil-water two-phase flow in the complex pipeline is developed based on the combination of pipe serial-parallel theory, flow pattern transformation criterion, two-fluid model, and homogenous model. A case is present to verify the unified model and compare with CFD results. The results show that the proposed unified model can achieve excellent performance in predicting both the flow distributions and pressure drops of oil-water two-phase flow in the complex pipeline. Compared with CFD results for water volumetric fractions ranging from 0% to 100%, the highest absolute percentage error of the proposed model is 14.4% and the average is 9.8%.

Flow structure and pressure gradient of extra heavy crude oil-water two-phase flow

2017 ◽  
Vol 82 ◽  
pp. 174-181 ◽  
Author(s):  
Xiaoming Luo ◽  
Guobin Lü ◽  
Wei Zhang ◽  
Limin He ◽  
Yuling Lü
Keyword(s):  
Pressure Gradient ◽  
Crude Oil ◽  
Flow Structure ◽  
Two Phase Flow ◽  
Heavy Crude Oil ◽  
Phase Flow ◽  
Two Phase ◽  
Oil Water ◽  
Heavy Crude

Development of Two Fluid Model for Pressure Drop Prediction in Two-Phase Vertical Churn Flow

2001 ◽  
Author(s):  
Satya A. Putra ◽  
Richard L. Christiansen ◽  
James P. Brill
Keyword(s):  
Flow Model ◽  
Two Phase Flow ◽  
Fluid Model ◽  
Mechanistic Model ◽  
Homogeneous Model ◽  
Phase Flow ◽  
Two Phase ◽  
Two Fluid Model ◽  
Churn Flow ◽  
Two Fluid

Abstract Comprehensive mechanistic models for two-phase flow in pipes have been proposed by several authors. These models predict pressure gradients for bubble, dispersed bubble, churn, slug, and annular flow patterns. The churn flow pressure gradient is often formulated based on a homogeneous model or modification of a slug flow model. A new mechanistic model for churn flow in vertical two-phase flow in pipes has been formulated applying two-fluid model concepts. The two-fluid model for churn flow is developed by defining the mass and momentum balances for gas and liquid phases. An interfacial interaction term is introduced to the balance equations defining the interaction between phases. Pressure drops calculated from this model and other methods available in the literature are compared with measured churn flow data from the Tulsa University Fluid flow Projects (TUFFP) databank. Results show that the proposed churn flow model performs better than all other methods considered.

Pressure Drop and Water Holdup of Malaysian Crude Oil and Water Two-Phase Flow in Pipes

2014 ◽  
Vol 931-932 ◽  
pp. 1248-1252 ◽  
Author(s):  
Issham Ismail ◽  
Shahir Misnan ◽  
Ahmad Shamsul Izwan Ismail ◽  
Rahmat Mohsin
Keyword(s):  
Pressure Drop ◽  
Crude Oil ◽  
Two Phase Flow ◽  
Research Work ◽  
Complex Case ◽  
Phase Flow ◽  
Waxy Crude Oil ◽  
Two Phase ◽  
Waxy Crude ◽  
Oil Water

Understanding the pressure drop and water holdup of crude oil-water flow in a pipe is crucial to many engineering applications. Free water in contact with the pipes wall can cause erosion or corrosion problems. An experimental research was conducted at the Malaysia Petroleum Resources Corporation Institute for Oil and Gas, Universiti Teknologi Malaysia to study the pressure drop and water holdup of the Malaysian waxy crude oil-water flowing in a closed-loop system at ambient condition through a 5.08 cm ID stainless steel horizontal pipeline. In the research work, water cuts were varied from 0 - 90% with mixture velocities ranging from 0.1 0.8 m/s. The research works comprised fluid characterization, pressure drop, and liquid holdup measurement.The investigations proved that pressure drop increased with flow rates, while the water holdup was found to have decreased slightly at higher water cuts due to the presence of emulsion in the crude oil a challenge when using a waxy crude oil in a two phase flow system. The experimental results can be used as a platform to understand better a more complex case of liquid-liquid two phase flow.

Hyperbolicity, Discontinuities and Numerics of the Two-Fluid Model

2007 ◽  
Author(s):  
Chih-Hao Chang ◽  
Svetlana Sushchikh ◽  
Loc Nguyen ◽  
Meng-Sing Liou ◽  
Theo Theofanous
Keyword(s):  
Flow Model ◽  
Two Phase Flow ◽  
Fluid Model ◽  
Pressure Coefficient ◽  
Phase Flow ◽  
Two Phase ◽  
Interfacial Pressure ◽  
Flow Speeds ◽  
Two Fluid Model

The hyperbolicity boundaries of a (droplet) disperse, two-phase flow model at high flow speeds and relative velocities are found, the role of interfacial pressure on regularization is discussed, and the effects on integrability of the system of equations, solver robustness, and convergence properties are determined as a function of position relative to hyperbolic boundaries. We find good agreement between model and physics in that both exhibit a “sensitive” behavior in the transonic region (relative Mach number ∼1, hereafter omitting “relative” for brevity), and in that regularization requires increasing the interfacial pressure coefficient consistently with flow peculiarities in this region. The result is a two-phase flow model that is unconditionally hyperbolic and robust to grid refinement even in the most sensitive numerical tests with no dissipative terms in the equations.

Theoretical and Experimental Study on Oil-Water Two-Phase Flow in a Downhole Venturi Meter

2012 ◽  
Vol 232 ◽  
pp. 284-287
Author(s):  
Si Huang ◽  
Peng Wang ◽  
Yu Hui Guan
Keyword(s):  
Experimental Data ◽  
Numerical Simulation ◽  
Experimental Study ◽  
Flow Model ◽  
Two Phase Flow ◽  
Experimental Testing ◽  
Venturi Tube ◽  
Phase Flow ◽  
Two Phase ◽  
Oil Water

This paper presents a study on an oil-water two-phase flow model in a downhole Venturi meter by theoretical calculation, numerical simulation and experimental testing. The flow field and pressure characteristics with different flow and oil-water ratios in Venturi tube are investigated. It is found that the flow is stratified in the Venturi tube, the water phase accumulates in the tube center and the oil phase concentrates on the wall; the pressure drop is increased with flow; theoretical and numerical results are verified by experimental data.

Sign in / Sign up

Export Citation Format

Share Document