Determining Effective Mixture Viscosities in Oil-Water Flows for Downhole Oilfield Operations

2018 ◽  
Author(s):  
C. E. Ejim ◽  
J. J. Xiao
Keyword(s):  
Water Flows ◽  
Oil Water ◽  
Oilfield Operations

CFD Modeling and Simulation of Oil-Water Flows in Oil Reservoir

2018 ◽  
Author(s):  
Rachida Chemini ◽  
Mohamed Aksouh ◽  
Bassim Lemouari ◽  
Soumana Abubacar Djibo
Keyword(s):  
Modeling And Simulation ◽  
Cfd Modeling ◽  
Oil Reservoir ◽  
Water Flows ◽  
Oil Water

An analysis of dynamic pseudo-relative permeability methods for oil-water flows

1999 ◽  
Vol 5 (4) ◽  
pp. 385-394 ◽  
Author(s):  
John W. Barker ◽  
Philippe Dupouy
Keyword(s):  
Relative Permeability ◽  
Water Flows ◽  
Oil Water

Characterization of Oil/Water Flows in Inclined Pipes

2009 ◽  
Vol 4 (02) ◽  
pp. 41-46 ◽  
Author(s):  
Serdar Atmaca ◽  
Cem Sarica ◽  
Hong-Quan Zhang ◽  
Abdel Salam Al-Sarkhi
Keyword(s):  
Water Flows ◽  
Oil Water ◽  
Inclined Pipes

Application of Increment-Dimension Precise Integration Method in Numerical Simulation of Two-Phase Oil-Water Flows in a Low Permeability Reservoir

2011 ◽  
Vol 243-249 ◽  
pp. 5985-5988
Author(s):  
Fu Liang Mei ◽  
Xiang Song Wu ◽  
Guang Ping Lin
Keyword(s):  
Numerical Simulation ◽  
Production Rate ◽  
Integration Method ◽  
Pore Fluid ◽  
Low Permeability ◽  
Pressure Gradients ◽  
Two Phase ◽  
Precise Integration ◽  
Water Flows ◽  
Oil Water

The numerical simulation of two-phase oil-water flows in a low permeability reservoir was carried out by means of an increment-dimension precise integration method (IDPIM). First of all, state equations denoted with pore fluid pressures at mesh nodes were built up according to finite difference method (FDM). Secondly, the recurrence formulae of the pore fluid pressures at mesh nodes were set up based on IDPIM. Finally, the numerical simulations of two-phase oil water seepages for a typical five point injection-production reservoir as an example were conducted by means of IDPIM and IMPES respectively. Calculation results by IDPIM are in good accordance with those by IMPES, and then IDPIM is quite reliable. At the same time, the effect rule of the startup pressure gradients on recovery degree, liquid production rate and oil production rate has been investigated. The start-up pressure gradients have an outstanding effect on recovery degree, liquid production rate and oil production rate, and the existence of the startup pressure gradients will enhance development difficulty and cost.

scholarly journals Drag Reduction with Biopolymer-Synthetic Polymer Mixtures in Oil-Water Flows: Effect of Synergy

2020 ◽  
Vol 24 (6) ◽  
pp. 1-10
Author(s):  
Lawrence Chukwuka Edomwonyi-Otu ◽  
Muhammed Muhammed Gimba ◽  
Nurudeen Yusuf
Keyword(s):  
Reynolds Number ◽  
Pressure Drop ◽  
Pressure Gradient ◽  
Drag Reduction ◽  
Water Flow ◽  
Transport Systems ◽  
Test Fluid ◽  
Polymer Mixture ◽  
Water Flows ◽  
Oil Water

The search for lower cost materials that reduce pressure drop in fluid transport systems in oil and gas industries to conserve pumping energy is of paramount importance. Polymers are known to reduce pressure drop in pipeline oil-water flows in a process referred to as drag reduction (DR). The effect of partially hydrolysed polyacrylamide, polyethylene oxide, Aloe Vera mucilage and their mixtures as drag reducing polymers (DRPs) on pressure gradient (pressure drop; Δp) in pipeline oil-water flows were studied. The experiment was carried out in flow rig with 0.02-m diameter straight unplasticised polyvinylchloride (uPVC) pipe, two centrifugal pumps, control valves and two storage tanks. Tap water (ρ = 997 kg/m3 and µ = 0.89 cP) and diesel (ρ = 832 kg/m3 and µ = 1.66 cP) were used as the test fluid at ambient condition. The polymer mixture total concentration (MTC) of 30 and 400 ppm at different mixing proportion, mixture Reynolds number (Remix) and oil input volume were investigated. The results show increase in pressure gradient with increase in oil input volume in both single-phase water flow and oil-water flow before adding drag reducing polymers (DRPs). However, Δp decreased after adding DRPs with increase in Reynolds number (Re) or Remix and decrease in the oil-phase Re, and vice versa. The results further showed higher reduction in pressure drop by the polymer mixture than in each of the polymer used at the same conditions. The rigidness of the biopolymer was improved by adding synthetic polymers which resulted to increase in DR efficiency.

scholarly journals Separated oil-water flows with drag reducing polymers

2019 ◽  
Vol 102 ◽  
pp. 467-478 ◽  
Author(s):  
Lawrence C. Edomwonyi-Otu ◽  
Panagiota Angeli
Keyword(s):  
Water Flows ◽  
Oil Water

An Element-Based Finite Volume Technique Using IMPES and Fully Implicit Approaches for 3D Oil-Water Flows With Hybrid Grids

2017 ◽  
Author(s):  
Taisa B. Pacheco ◽  
António F. Carvalho da Silva ◽  
Clovis R. Maliska
Keyword(s):  
Porous Media ◽  
Convergence Rate ◽  
Finite Volume ◽  
Petroleum Reservoir ◽  
Water Flows ◽  
Fully Implicit ◽  
Hybrid Grids ◽  
Oil Water ◽  
Control Volumes ◽  
Volume Method

The finite volume techniques for solving fluid flow problems can be broadly classified in cell center and cell vertex methodologies. The conventional finite volume techniques belong to the former class, since the elements coming from the grid generator are used as control volumes for performing the balances of the physical quantities, like mass, momentum and energy. The majority of the available methods in the literature uses this type of approach for solving multiphase flows of oil, water and gas in porous media. In petroleum reservoir simulation it is common for the conventional finite volume method to be linked to corner-point grids. This paper presents an Element-based Finite Volume Method (EbFVM), whereby the control volumes are constructed using parts of the elements, generating polygonal meshes in which mass, momentum and energy conservation are enforced. Polygonal meshes considerably reduce the number of unknowns of the linear system when compared with conventional finite volume methods. Three-dimensional hybrid grids are employed for the solution of oil-water flows in a porous media resembling a petroleum reservoir using the IMPES, sequential and fully implicit approaches. The analytical solution of the 1D Buckley-Leverett problem is used for evaluation purposes, and numerical solutions for 2D and 3D problems using unstructured grids are carried out to demonstrate the generality of the method and for comparing the robustness, convergence rate and CPU time of the IMPES and Fully Implicit solutions. Memory usage and convergence rate are also presented for the solution of 3D problems using tetrahedral grids in a cell-center and cell-vertex methodologies.

scholarly journals Capacitance probe for water holdup measurement in crude oil-water flows

2020 ◽  
Vol 10-12 ◽  
pp. 100028
Author(s):  
Xuebo Zheng ◽  
Bo Yang ◽  
Bofeng Bai
Keyword(s):  
Crude Oil ◽  
Water Flows ◽  
Capacitance Probe ◽  
Oil Water
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