Percolation Model for Permeability Reduction in Porous Media by Continuous-Gas Foams

2000 ◽  
Vol 39 (8) ◽  
pp. 2709-2716 ◽  
Author(s):  
Randy D. Hazlett ◽  
Mary J. Furr
Keyword(s):  
Porous Media ◽  
Percolation Model ◽  
Permeability Reduction

scholarly journals A dual percolation model for predicting the connectivity of fractured porous media

2016 ◽  
Vol 43 (1) ◽  
pp. 95-110 ◽  
Author(s):  
Pingkang Wang ◽  
Xuhui Zhang ◽  
Xiaobing Lu ◽  
Wei Zheng ◽  
Qingjie Liu
Keyword(s):  
Porous Media ◽  
Percolation Model ◽  
Fractured Porous Media

Investigation of Effective Mechanisms in Permeability Reduction Due to Asphaltene Deposition through Porous Media

2013 ◽  
Author(s):  
M. Khederzadeh ◽  
S. Ostadrezaei ◽  
Iran R. Kharrat ◽  
H. Bagherzadeh ◽  
S. Mahdavi ◽  
...  
Keyword(s):  
Porous Media ◽  
Permeability Reduction ◽  
Asphaltene Deposition

An Integrated Simulation Approach to Predict Permeability Impairment under Simultaneous Aggregation and Deposition of Asphaltene Particles

SPE Journal ◽  
2021 ◽  
pp. 1-14
Author(s):  
Xin Su ◽  
Rouzbeh G. Moghanloo ◽  
Minhui Qi ◽  
Xiang-an Yue
Keyword(s):  
Porous Media ◽  
Particle Aggregation ◽  
Formation Damage ◽  
Permeability Reduction ◽  
Simulation Approach ◽  
Pore Connectivity ◽  
Integrated Simulation ◽  
Asphaltene Deposition ◽  
Simulation Results ◽  
Permeability Impairment

Summary Formation damage mechanisms in general lower the quality of the near wellbore, often manifested in the form of permeability reduction, and thus reducing the productivity of production wells and injectivity of injection wells. Asphaltene deposition, as one of the important causes, can trigger serious formation damage issues and significantly restrict the production capacity of oil wells. Several mechanisms acting simultaneously contribute to the complexity associated with prediction of permeability impairment owing to asphaltene deposition; thus, integration of modeling efforts for asphaltene aggregation and deposition mechanisms seems inevitable for improved predictability. In this work, an integrated simulation approach is proposed to predict permeability impairment in porous medium. The proposed approach is novel because it integrates various mathematical models to study permeability impairment considering porosity reduction, particle aggregation, and pore connectivity loss caused by asphaltene deposition. To improve the accuracy of simulation results, porous media is considered as a bundle (different size) of capillary tubes with dynamic interconnectivity. The total volume change of interconnected tubes will directly represent permeability reduction realized in porous media. The prediction of asphaltene deposition in porous media is improved in this paper via integration of the particle aggregation model into calculation. The simulation results were verified by comparing with existing experimental data sets. After that, a sensitivity analysis was performed to study parameters that affect permeability impairment. The simulation results show that our permeability impairment model—considering asphaltene deposition, aggregation, and pore connectivity loss—can accurately reproduce the experimental results with fewer fitting or empirical parameters needed. The sensitivity analysis shows that longer aggregation time, higher flow velocity, and bigger precipitation concentration will lead to a faster permeability reduction. The findings of this study can help provide better understanding of the permeability impairment caused by asphaltene deposition and pore blockage, which provides useful insights for prediction of production performance of oil wells.

Design of Thermoresponsive Polymers to Selective Permeability Reduction in Porous Media

2020 ◽  
Author(s):  
Giuseppe Maddinelli ◽  
Martin Bartosek ◽  
Stefano Carminati ◽  
Leili Moghadasi ◽  
Nicolò Manfredini ◽  
...  
Keyword(s):  
Porous Media ◽  
Permeability Reduction ◽  
Thermoresponsive Polymers ◽  
Selective Permeability

A network model for capture of emulsion droplets in porous media

2008 ◽  
Vol 48 (1) ◽  
pp. 21
Author(s):  
Changhong Gao
Keyword(s):  
Porous Media ◽  
Enhanced Oil Recovery ◽  
Network Model ◽  
Oil Recovery ◽  
Produced Water ◽  
Permeability Reduction ◽  
Oil Droplets ◽  
New Approach ◽  
Reservoir Rocks ◽  
Emulsion Droplets

Capture of emulsion droplets in porous media can be costly or beneficial. When produced water is injected into reservoir for pressure maintenance, the oil droplets in produced water can plug reservoir rocks and cause the well to lose injectivity. Enhanced oil recovery (EOR) technology takes advantage of this feature and plugs high-injectivity zones with emulsions. Previous studies reveal that interception and straining are the mechanisms of permeability decline. Established models rely on filtration data to determine key parameters. In this work, a network model is proposed to simulate capture of oil droplets in reservoir rocks and resultant permeability reduction. The model is validated with test data and reasonably good results are obtained. The simulation also reveals that the wettability of the tested porous media was altered by injection of emulsions. The new approach considers the characteristics of the porous media and incorporates the damage mechanisms, thus providing more scientific insights into the flow and capture of droplets in porous media.

Permeability reduction by asphaltenes and resins deposition in porous media

Fuel ◽  
2008 ◽  
Vol 87 (10-11) ◽  
pp. 2178-2185 ◽  
Author(s):  
R. Hamadou ◽  
M. Khodja ◽  
M. Kartout ◽  
A. Jada
Keyword(s):  
Porous Media ◽  
Permeability Reduction
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