Two-phase flow for a horizontal well penetrating a naturally fractured reservoir with edge water injection

1995 ◽  
Vol 16 (10) ◽  
pp. 937-942
Author(s):  
Guo Dali ◽  
Liu Ciqun
Keyword(s):  
Horizontal Well ◽  
Two Phase Flow ◽  
Water Injection ◽  
Phase Flow ◽  
Fractured Reservoir ◽  
Naturally Fractured Reservoir ◽  
Two Phase ◽  
Naturally Fractured

scholarly journals Coupling of two-phase flow in fractured-vuggy reservoir with filling medium

Open Physics ◽  
2017 ◽  
Vol 15 (1) ◽  
pp. 12-17 ◽  
Author(s):  
Haojun Xie ◽  
Aifen Li ◽  
Zhaoqin Huang ◽  
Bo Gao ◽  
Ruigang Peng
Keyword(s):  
Porous Media ◽  
Oil Recovery ◽  
Two Phase Flow ◽  
Water Injection ◽  
Free Flow ◽  
Flow In Porous Media ◽  
Free Fluid ◽  
Phase Flow ◽  
Fluid Exchange ◽  
Two Phase

AbstractCaves in fractured-vuggy reservoir usually contain lots of filling medium, so the two-phase flow in formations is the coupling of free flow and porous flow, and that usually leads to low oil recovery. Considering geological interpretation results, the physical filled cave models with different filling mediums are designed. Through physical experiment, the displacement mechanism between un-filled areas and the filling medium was studied. Based on the experiment model, we built a mathematical model of laminar two-phase coupling flow considering wettability of the porous media. The free fluid region was modeled using the Navier-Stokes and Cahn-Hilliard equations, and the two-phase flow in porous media used Darcy's theory. Extended BJS conditions were also applied at the coupling interface. The numerical simulation matched the experiment very well, so this numerical model can be used for two-phase flow in fracture-vuggy reservoir. In the simulations, fluid flow between inlet and outlet is free flow, so the pressure difference was relatively low compared with capillary pressure. In the process of water injection, the capillary resistance on the surface of oil-wet filling medium may hinder the oil-water gravity differentiation, leading to no fluid exchange on coupling interface and remaining oil in the filling medium. But for the water-wet filling medium, capillary force on the surface will coordinate with gravity. So it will lead to water imbibition and fluid exchange on the interface, high oil recovery will finally be reached at last.

Flow Structures and Frictional Characteristics on Two-Phase Flow in Microchannels in PEM Fuel Cells

2005 ◽  
Author(s):  
Eon Soo Lee ◽  
Carlos H. Hidrovo ◽  
Julie E. Steinbrenner ◽  
Fu-Min Wang ◽  
Sebastien Vigneron ◽  
...  
Keyword(s):  
Pressure Drop ◽  
Gas Phase ◽  
Single Phase ◽  
Film Flow ◽  
Two Phase Flow ◽  
Water Injection ◽  
Injection Rate ◽  
Flow Structures ◽  
Phase Flow ◽  
Two Phase

This experimental paper presents a study of gas-liquid two phase flow in rectangular channels of 500μm × 45μm and 23.7mm long with different wall conditions of hydrophilic and hydrophobic surface, in order to investigate the flow structures and the corresponding friction factors of simulated microchannels of PEMFC. The main flow in the channel is air and liquid water is injected at a single or several discrete locations in one side wall of the channel. The flow structure of liquid water in hydrophilic wall conditioned channel starts from wavy flow, develops to stable stratified film flow, and then transits to unstable fluctuating film flow, as the pressure drop and the flow velocity of air increase from around 10 kPa to over 100 kPa. The flow structure in hydrophobic channel develops from the slug flow to slug-and-film flow with increasing pressure drop and flow velocity. The pressure drop for single phase flow is measured for a base line study, and the fRe product is in close agreement with the theoretical value (fRe = 85) of the conventional laminar flow of aspect ratio 1:11. At the low range of water injection rate, the gas phase fRe product of the two phase flow based on the whole channel area was not substantially affected by the water introduction. However, as the water injection rate increases up to 100 μL/min, the gas phase fRe product based on the whole channel area deviates highly from the single phase theoretical value. The gas phase fRe product with the actual gas phase area corrected by the liquid phase film thickness agrees with the single phase theoretical value.

1D Homogeneous Modeling of Microchannel Two-Phase Flow With Distributed Liquid Water Injection From Walls

2004 ◽  
Author(s):  
Se´bastien Vigneron ◽  
Carlos H. Hidrovo ◽  
Fu-Min Wang ◽  
Eon-Soo Lee ◽  
Julie E. Steinbrenner ◽  
...  
Keyword(s):  
Pressure Drop ◽  
Liquid Water ◽  
Two Phase Flow ◽  
Water Injection ◽  
Distribution Data ◽  
Phase Flow ◽  
Two Phase ◽  
Small Water ◽  
Model Predictions ◽  
Side Walls

This paper presents a theoretical model and a numerical simulation of a liquid-gas two-phase flow within a microchannel (50 μm × 500 μm × 2cm) equipped with distributed liquid water injection through the side walls. The modeling and solution of the conservation equations provide pressure drop as a function of inlet velocity. The influence of different parameters involving water injection is investigated, such as the quantity of water that is injected and the profile that is used to inject it. The numerical results show that for small water injection rates (1–10μL/min) the air flow velocity and pressure drop are not significantly perturbed by the presence of liquid water. But if water injection becomes important (10–100μL/min) larger pressure drops are observed. The influence of inlet pressure is also investigated. The model predictions are compared with experimental results obtained from testing a set of microchannels with a varying number of water injection slots on the side walls. Pressure drop distribution data from these experiments are consistent with model predictions.

Two-Phase Flow (Oil-Water) in Petroleum Reservoir with Irregular Geometry Including Water Injection: Effect of Porosity on the Oil Recovery Factor

2012 ◽  
Vol 326-328 ◽  
pp. 181-186 ◽  
Author(s):  
F. Alves Batista ◽  
B. Gonçalves Coutinho ◽  
Severino Rodrigues de Farias Neto ◽  
Antônio Gilson Barbosa de Lima
Keyword(s):  
Oil Recovery ◽  
Two Phase Flow ◽  
Water Injection ◽  
Recovery Factor ◽  
Phase Flow ◽  
Petroleum Reservoir ◽  
Two Phase ◽  
Fully Implicit ◽  
Irregular Geometry ◽  
Black Oil Model

The aim of this work is to study theoretically the effect of porosity of an oil reservoir with arbitrary geometry on the oil recovery factor. A two-dimensional mathematical modeling (Black-oil model) and numerical solution applied to two-phase flow (water-oil) into the reservoir with irregular geometry including water injection is presented. The conservation equations written in generalized coordinates are solved using the finite volume method, with a fully implicit technique. Results of the pressure and saturation distributions and oil recovery factor over time are presented and evaluated for different values of porosity of the reservoir.

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