The influence of contact angle on capillary pressure–saturation relations in a porous medium including various liquids

2005 ◽  
Vol 43 (8-9) ◽  
pp. 744-755 ◽  
Author(s):  
Ali Ishakoglu ◽  
A. Filiz Baytas
Keyword(s):  
Contact Angle ◽  
Porous Medium ◽  
Capillary Pressure

scholarly journals Relationships among air-water interfacial area, capillary pressure, and water saturation for a sandy porous medium

2006 ◽  
Vol 42 (3) ◽  
Author(s):  
Mark L. Brusseau ◽  
Sheng Peng ◽  
Gregory Schnaar ◽  
Molly S. Costanza-Robinson
Keyword(s):  
Porous Medium ◽  
Capillary Pressure ◽  
Water Saturation ◽  
Interfacial Area

Modelling the effect of capillary pressure on a liquid flow in a porous medium

1986 ◽  
Vol 34 (7) ◽  
pp. 1173-1178 ◽  
Author(s):  
C.Y. Liu ◽  
K. Murakami ◽  
T. Okamoto
Keyword(s):  
Porous Medium ◽  
Capillary Pressure ◽  
Liquid Flow

scholarly journals A Review of Capillary Pressure Control Valves in Microfluidics

Biosensors ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 405
Author(s):  
Shaoxi Wang ◽  
Xiafeng Zhang ◽  
Cong Ma ◽  
Sheng Yan ◽  
David Inglis ◽  
...  
Keyword(s):  
Surface Tension ◽  
Contact Angle ◽  
Capillary Pressure ◽  
Open Channel ◽  
Control Valve ◽  
Pressure Control ◽  
Pressure Effects ◽  
Helpful Tool ◽  
Control Valves ◽  
Pressure Control Valve

Microfluidics offer microenvironments for reagent delivery, handling, mixing, reaction, and detection, but often demand the affiliated equipment for liquid control for these functions. As a helpful tool, the capillary pressure control valve (CPCV) has become popular to avoid using affiliated equipment. Liquid can be handled in a controlled manner by using the bubble pressure effects. In this paper, we analyze and categorize the CPCVs via three determining parameters: surface tension, contact angle, and microchannel shape. Finally, a few application scenarios and impacts of CPCV are listed, which includes how CPVC simplify automation of microfluidic networks, work with other driving modes; make extensive use of microfluidics by open channel, and sampling and delivery with controlled manners. The authors hope this review will help the development and use of the CPCV in microfluidic fields in both research and industry.

scholarly journals Nonhysteretic Capillary Pressure in Two‐Fluid Porous Medium Systems: Definition, Evaluation, Validation, and Dynamics

2019 ◽  
Vol 55 (8) ◽  
pp. 6825-6849 ◽  
Author(s):  
C. T. Miller ◽  
K. Bruning ◽  
C. L. Talbot ◽  
J. E. McClure ◽  
W. G. Gray
Keyword(s):  
Porous Medium ◽  
Capillary Pressure ◽  
Two Fluid

scholarly journals Fault seal modelling – the influence of fluid properties on fault sealing capacity in hydrocarbon and CO2 systems

2020 ◽  
Vol 26 (3) ◽  
pp. 481-497 ◽  
Author(s):  
Rūta Karolytė ◽  
Gareth Johnson ◽  
Graham Yielding ◽  
Stuart M.V. Gilfillan
Keyword(s):  
Contact Angle ◽  
Capillary Pressure ◽  
Petroleum Industry ◽  
Interfacial Tensions ◽  
Link Type ◽  
Sealing Capacity ◽  
Fluid Properties ◽  
Supplementary Material ◽  
Modelling Methods ◽  
Threshold Capillary Pressure

Fault seal analysis is a key part of understanding the hydrocarbon trapping mechanisms in the petroleum industry. Fault seal research has also been expanded to CO2–brine systems for the application to carbon capture and storage (CCS). The wetting properties of rock-forming minerals in the presence of hydrocarbons or CO2 are a source of uncertainty in the calculations of capillary threshold pressure, which defines the fault sealing capacity. Here, we explore this uncertainty in a comparison study between two fault-sealed fields located in the Otway Basin, SE Australia. The Katnook Field in the Penola Trough is a methane field, while Boggy Creek in Port Campbell contains a high-CO2–methane mixture. Two industry standard fault seal modelling methods, one based on laboratory measurements of fault samples and the other based on a calibration of a global dataset of known sealing faults, are used to discuss their relative strengths and applicability to the CO2 storage context. We identify a range of interfacial tensions and contact angle values in the hydrocarbon–water system under the conditions assumed by the second method. Based on this, the uncertainty related to the spread in fluid properties was determined to be 24% of the calculated threshold capillary pressure value. We propose a methodology of threshold capillary pressure conversion from hydrocarbons–brine to the CO2–brine system, using an input of appropriate interfacial tension and contact angle under reservoir conditions. The method can be used for any fluid system where fluid properties are defined by these two parameters.Supplementary material: (1) Fault seal modelling methods and calculations, and (2) hydrocarbon and CO2 interfacial tensions and contact angle values collected in the literature are available at https://doi.org/10.6084/m9.figshare.c.4877049This article is part of the Energy Geoscience Series available at https://www.lyellcollection.org/cc/energy-geoscience-series

Nonlinear behavior of instabilities in diphasic flow in a heterogeneous porous medium

1980 ◽  
Vol 58 (12) ◽  
pp. 1729-1733
Author(s):  
D. S. Pal
Keyword(s):  
Porous Medium ◽  
Statistical Model ◽  
Capillary Pressure ◽  
Nonlinear Behavior ◽  
Heterogeneous Porous Medium ◽  
Water Displacement ◽  
Oil Water ◽  
Statistical Viewpoint

The nonlinear behavior of instabilities (fingers) in a specific oil–water displacement process, which includes the effects of capillary pressure in a heterogeneous porous medium, has been analysed from a statistical viewpoint. It is shown that, based on theories available for capillary pressure, the statistical model does not lead to any stabilization of the fingers.

Measurement of Equivalent Pore Radius and Contact Angle Within Porous Media

2015 ◽  
Author(s):  
Saitej Ravi ◽  
David Horner ◽  
Saeed Moghaddam
Keyword(s):  
Contact Angle ◽  
Capillary Pressure ◽  
Pore Radius ◽  
Working Fluid ◽  
Test Liquid ◽  
Capillary Radius ◽  
First Order ◽  
Wick Structure ◽  
Capillary Pressures ◽  
Two Parameters

The equivalent pore radius (i.e. capillary radius) and contact angle determine the capillary pressure generated in a porous medium. The most common method to determine these two parameters is through measurement of the capillary pressure generated by a test liquid and a reference liquid (i.e. a liquid with near-zero contact angle). The rate of rise technique commonly used to determine the capillary pressure results in significant uncertainties. In this study, we utilize our recently developed technique for independent measurement of the capillary pressure and permeability to determine the equivalent capillary radii and contact angle of water within micropillar wick structures. In this method, the experimentally measured dryout threshold of a wick structure at different wicking lengths is fit to Darcy’s law to extract the capillary pressure generated by the test liquid. The equivalent capillary radii of different wick geometries are determined by measuring the capillary pressures generated using n-hexane as the working fluid. It is found that the equivalent capillary radius is dependent on the diameter of pillars as well as the spacing between pillars. The equivalent capillary radii of micropillar wicks determined using the new method are found to be up to 7 times greater than the current geometry-based first order estimates. The contact angle subtended by water at the walls of the micropillars was determined by measuring the capillary pressure generated by water within the arrays and the measured capillary radii for the different geometries. This contact angle was determined to be 52.7°.

Sign in / Sign up

Export Citation Format

Share Document