Numerical Simulation of the Non-Darcy Flow Based on Random Fractal Micronetwork Model for Low Permeability Sandstone Gas Reservoirs
Joint Authors
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-10-14
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Darcy’s law is not suit for describing high velocity flow in the near wellbore region of gas reservoirs.
The non-Darcy coefficient β of the Forchheimer’s equation is a main parameter for the evaluation of seepage capacity in gas reservoirs.
The paper presented a new method to calculate β by performing gas and con-water flow simulations with random 3D micropore network model.
Firstly, a network model is established by random fractal method.
Secondly, based on the network simulation method of non-Darcy flow in the literature of Thauvin and Mohanty, a modified model is developed to describe gas non-Darcy flow with irreducible water in the porous medium.
The model was verified by our experimental measurements.
Then, we investigated the influence of different factors on the non-Darcy coefficient, including micropore structure (pore radius and fractal dimension), irreducible water saturation (Swi), tortuosity, and other reservoir characteristics.
The simulation results showed that the value of the non-Darcy coefficient decreases with the increase in all: the average pore radius, fractal dimension, irreducible water saturation, and tortuosity.
The non-Darcy coefficients obtained by the fractal method of microparameters are estimated more precisely than the conventional methods.
The method provides theoretical support for the productivity prediction of non-Darcy flow in gas reservoirs.
American Psychological Association (APA)
Li, Juhua& Chen, Chen. 2020. Numerical Simulation of the Non-Darcy Flow Based on Random Fractal Micronetwork Model for Low Permeability Sandstone Gas Reservoirs. Geofluids،Vol. 2020, no. 2020, pp.1-9.
https://search.emarefa.net/detail/BIM-1166292
Modern Language Association (MLA)
Li, Juhua& Chen, Chen. Numerical Simulation of the Non-Darcy Flow Based on Random Fractal Micronetwork Model for Low Permeability Sandstone Gas Reservoirs. Geofluids No. 2020 (2020), pp.1-9.
https://search.emarefa.net/detail/BIM-1166292
American Medical Association (AMA)
Li, Juhua& Chen, Chen. Numerical Simulation of the Non-Darcy Flow Based on Random Fractal Micronetwork Model for Low Permeability Sandstone Gas Reservoirs. Geofluids. 2020. Vol. 2020, no. 2020, pp.1-9.
https://search.emarefa.net/detail/BIM-1166292
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1166292