# What is porosity and permeability?

## What is porosity and permeability?

Porosity: is a measure of the void spaces in a material. Permeability: a measure of the ability of a material (such as rocks) to transmit fluids. Porosity and permeability are related properties of any rock or loose sediment. Both are related to the number, size, and connections of openings in the rock.

## What is soil porosity and permeability?

Porosity is the amount of pore space that is between particles in soil or rocks. Permeability takes this pore space and connects the voids together so that water can pass through. Porosity is more associated with storage of water, while permeability is more associated with groundwater movement and flow.

Why is porosity and permeability important?

The porosity and permeability of rocks is important in determining which rocks will make a good reservoir. A rock that is both porous and permeable would make a good reservoir rock as it allows oil and gas to move up through the pores in the rock closer to the surface where it can be extracted.

### What means porosity?

Definition of porosity 1a : the quality or state of being porous. b : the ratio of the volume of interstices of a material to the volume of its mass. 2 : pore.

### How do you find permeability?

To calculate the permeability of a porous material, use Darcy’s law equation:

1. Multiply together the fluid discharge rate, dynamic viscosity, and distance traveled.
2. Divide the result from Step one by the cross-sectional area of the material multiplied by the pressure difference on either side of the material.

What is an example of permeability?

Capable of being permeated or passed through, used especially of substances where fluids can penetrate or pass through. For example, wood is permeable to oil.

## Why porosity is important?

Soil porosity is important for many reasons. A primary reason is that soil pores contain the groundwater that many of us drink. Another important aspect of soil porosity concerns the oxygen found within these pore spaces. All plants need oxygen for respiration, so a well-aerated soil is important for growing crops.

## What is permeability used for?

Geological permeability measurements are used to examine the conditions of samples under sustained environmental conditions, providing insight into fields of environmental research such as coastal erosion forecasting. It is also commonly applied in the field of oil exploration, or petroleum geology.

What has high porosity?

A good example of an aquitard is a layer of clay. Clay often has high porosity but almost no permeability meaning it is essentially a barrier which water cannot flow through and the water within it is trapped.

### What is water permeability?

Permeability is therefore a measure of the ability of water to move through a rock.

### What is permeability example?

An example of permeability is how fast water flows through a porous rock. The property of a porous substance, as rock or a membrane, of allowing the flow of a fluid through it. The measure of the ease with which a magnetic field can establish magnetic induction in a particular material. The property of being permeable.

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