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CFD simulation of HPAM EOR solutions mechanical degradation by restrictions in turbulent flow

Herrera Quintero, Julia Jineth ; Prada, Luis; Maya, Gustavo; VERGEL, JOSE; Castro Garcia, Ruben Hernan; QUINTERO, HENDERSON; Jiménez, Robinson; Pérez, Eduar (CT&F - Ciencia, Tecnología y FuturoColombia, 2020-12-17)

Polymer flooding is a widely used enhanced oil recovery (EOR) technology. The purpose of the polymer is to increase water viscosity to improve reservoir sweep efficiency. However, mechanical elements of the polymer injection ...
Experimental evaluation of the mechanical degradation of HPAM polymeric solutions used in enhanced oil recovery

Maya, Gustavo; Herrera Quintero, Julia Jineth ; Castro Garcia, Ruben Hernan; QUINTERO, HENDERSON; Prada, Luis; Maldonado Manrique, Laura Yedxenia; Pérez, Eduar ; Barbosa Trillos, Dalje Sunith (CT&F - Ciencia, Tecnología & FuturoColombia, 2020-12-17)

With the design of experiments (DoE), this study analyses the influence of physical (capillary diameter and pressure drop) and chemical variables (salinity, polymer concentration, and molecular weight) on the mechanical ...

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CFD simulation of HPAM EOR solutions mechanical degradation by restrictions in turbulent flow
...
Herrera Quintero, Julia Jineth | 2020-12-17

Polymer flooding is a widely used enhanced oil recovery (EOR) technology. The purpose of the polymer is to increase water viscosity to improve reservoir sweep efficiency. However, mechanical elements of the polymer injection facilities may impact the viscosity of the polymer negatively, decreasing it drastically. Mechanical degradation of the polymer occurs in case of flow restrictions with abrupt diameter changes in valves and control systems. Such flow restrictions may induce mechanical stresses along the polymer chain, which can result in its rupture. In this research, physical experiments and numerical simulations using CFD (Computational Fluid Dynamics) were used to propose a model for estimating the mechanical degradation for the flow of polymer solutions. This technique involves the calculation of velocity gradients, pressure drawdown, and polymer degradation of the fluid through geometry restriction. The simulations were validated through polymer injection experiments. The results show that with the greater volumetric flow and lower effective diameters, there is more mechanical degradation due to polymer shearing; nonetheless, this depends on the rheology properties inherent in each polymer in an aqueous solution. This method is suitable to estimate the mechanical degradation of the polymer solution in flooding facilities and accessories. Further, the results obtained could enhance the use of the polymer, calculating its actual mechanical degradation, minimizing it, or using it to support the development of new accessories.

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Experimental evaluation of the mechanical degradation of HPAM polymeric solutions used in enhanced oil recovery
...
Maya, Gustavo | 2020-12-17

With the design of experiments (DoE), this study analyses the influence of physical (capillary diameter and pressure drop) and chemical variables (salinity, polymer concentration, and molecular weight) on the mechanical degradation of partially hydrolyzed polyacrylamide-type polymer solutions (HPAM) used in enhanced oil recovery processes. Initially, with the help of a fractional factorial design (2k-p), the variables with the most significant influence on the polymer's mechanical degradation were found. The experimental results of the screening demonstrate that the factors that statistically influence the mechanical degradation are the molecular weight, the diameter of the capillary, and the pressure differential. Subsequently, a regression model was developed to estimate the degradation percentages of HPAM polymer solutions as a function of the significant factors influencing the mechanical degradation of polymer solutions. This model had a 97.85% fit for the predicted values under the experimental conditions. Likewise, through the optimization developed by the Box Behnken response surface methodology, it was determined that the pressure differential was the most influential factor. This variable was followed by the capillary diameter, where less than 50% degradation rates are obtained with low polymer molecular weight (6.5 MDa), pressure differentials less than 500 psi, and diameters of the capillary greater than 0.125 inches.

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Listar Ingeniería y Desarrollo Social - INDES por autor "7384684079019dbf6f7b083b8e9c623c"

CFD simulation of HPAM EOR solutions mechanical degradation by restrictions in turbulent flow

Experimental evaluation of the mechanical degradation of HPAM polymeric solutions used in enhanced oil recovery

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CFD simulation of HPAM EOR solutions mechanical degradation by restrictions in turbulent flow

Experimental evaluation of the mechanical degradation of HPAM polymeric solutions used in enhanced oil recovery

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Listar Ingeniería y Desarrollo Social - INDES por autor "7384684079019dbf6f7b083b8e9c623c"

CFD simulation of HPAM EOR solutions mechanical degradation by restrictions in turbulent flow ﻿

Experimental evaluation of the mechanical degradation of HPAM polymeric solutions used in enhanced oil recovery ﻿

Envíos recientes

CFD simulation of HPAM EOR solutions mechanical degradation by restrictions in turbulent flow

Experimental evaluation of the mechanical degradation of HPAM polymeric solutions used in enhanced oil recovery

Portales Institucionales

CFD simulation of HPAM EOR solutions mechanical degradation by restrictions in turbulent flow

Experimental evaluation of the mechanical degradation of HPAM polymeric solutions used in enhanced oil recovery