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Permeable - Revision history
2026-05-11T03:58:00Z
Revision history for this page on the wiki
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https://wikimd.org/index.php?title=Permeable&diff=6525742&oldid=prev
Prab at 13:05, 18 March 2025
2025-03-18T13:05:23Z
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Prab
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Prab: CSV import
2025-03-17T22:40:07Z
<p>CSV import</p>
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Prab
https://wikimd.org/index.php?title=Permeable&diff=6265787&oldid=prev
Prab: CSV import
2025-02-11T00:26:15Z
<p>CSV import</p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 00:26, 11 February 2025</td>
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Prab
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Prab: CSV import
2024-02-24T00:01:36Z
<p>CSV import</p>
<p><b>New page</b></p><div>'''Permeability''' refers to the ability of a material to allow another substance to pass through it, especially the ability of a porous rock, sediment, or soil to transmit fluid through pores and cracks. Geologic permeability can be either primary or secondary. Primary permeability is determined by the size and shape of the rock grains and the packing of the grains. Secondary permeability is caused by fractures and cracks in the rock.<br />
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==Types of Permeability==<br />
There are two types of permeability: absolute and effective. [[Absolute permeability]] is the measure of the permeability of a rock without any fluid interactions. [[Effective permeability]] is the ability to preferentially transmit a particular fluid when other fluids are present in the rock.<br />
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==Factors Affecting Permeability==<br />
Several factors can affect the permeability of a substance. These include the [[porosity]] of the material, the [[viscosity]] of the fluid, and the [[pressure gradient]] across the material. The size, shape, and distribution of the pores in the material also play a significant role in determining its permeability.<br />
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==Measurement of Permeability==<br />
Permeability is typically measured in the lab using a [[permeameter]]. The unit of measurement for permeability is the darcy (D), named after the French scientist [[Henry Darcy]] who first described the flow of water through sand.<br />
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==Applications of Permeability==<br />
Permeability has many applications in various fields. In [[hydrogeology]], it is used to determine the flow of water in aquifers. In [[petroleum engineering]], it is used to calculate the flow of oil and gas in reservoirs. In [[civil engineering]], it is used to design and analyze the stability of soil structures.<br />
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==See Also==<br />
* [[Hydraulic conductivity]]<br />
* [[Infiltration (hydrology)]]<br />
* [[Permeation]]<br />
* [[Porosity]]<br />
* [[Transmissivity]]<br />
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[[Category:Geology]]<br />
[[Category:Hydrogeology]]<br />
[[Category:Petroleum engineering]]<br />
[[Category:Civil engineering]]<br />
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Prab