# What is the formula for pore volume?

## What is the formula for pore volume?

The total pore volume (Wo) of porous materials may be determined by several methods. It is believed that most precise values result from measuring the true, ρtr, and apparent, ρapp, densities of the material, the specific pore volume being equal to W o ρ = 1 / ρ a p p − 1 / ρ t r .

**What is pore volume injected?**

Methodology. The cumulative water injection pore volume M is defined as the ratio of cumulative water injection through each grid block to the pore volume of that grid block in reservoir numerical simulator.(

**What is hydrocarbon pore volume?**

[¦hī·drə′kär·bən ′pȯr ‚väl·yəm] (petroleum engineering) The pore volume in a reservoir formation available to hydrocarbon intrusion.

### How do you calculate Stoiip?

Both estimates rely on the volumetric equation for calculating stock tank oil originally in-place (STOOIP), in barrels, is as follows: STOOIP = 7758 (bbls/acre-ft) x Oil Reservoir Area (acres) x Average Net Pay Thickness (ft) x Porosity (fraction) x Oil Saturation (fraction) x Oil Shrinkage (1/Bo)

**How do you find effective porosity?**

Effective porosity can be determined at the laboratory scale when sediment and rock samples of a given volume are dried and then the pore spaces are filled with water (Figure 8). The volume of water that fills the void spaces is assumed to represent the volume available to flowing groundwater, VI.

**How do you calculate pore volume of oil and gas?**

Pore Volume = Net Volume x Porosity. Hydrocarbon Volume = Pore Volume x (1 Water Saturation) STOOIP/STOIIP = Hydrocarbon Volume / Oil Formation Volume Factor. Recoverable Oil Volume = STOIIP x Oil Recovery Factor.

## What is STOIIP stand for?

Oil-in-place is also known as stock tank original oil-in-place (STOOIP) or stock tank oil-initially-in-place (STOIIP), referring to the oil in place before the commencement of production.

**What is Giip in oil and gas?**

an estimated measure of the total amount of gas contained in a reservoir and, as such, a higher figure than Recoverable Gas. May also be termed Gas initially in place (GIIP) to describe the volume of gas that exists at initial discovery.

**Is porosity the same as pore size?**

Pore size is the mean size of the material’s pores. Porosity is the ratio of (pores/unit of volume).

### Are my pores big or small?

The size of your pores depends primarily on your genes. Typically, fair-skinned people have pores on the small side while those with olive or darker skin have larger pores. Your skin type can play a role in this too. Naturally dry skin tends to appear more “pore less”, while oily skin often has more visible pores.