Convert US oil barrel to US dry barrel
Unit definitions
US oil barrel
The US oil barrel is defined as exactly $42$ US liquid gallons. It is used for measuring crude oil and other petroleum products.
US dry barrel
The US dry barrel is equal to exactly $7\,056$ cubic inches.
How to convert US oil barrel to US dry barrel
$$\text{Volume}_{\text{bbl (dry) (us)}} = \text{Volume}_{\text{bbl (oil)}} \cdot 1.375$$
Examples
Example 1
Convert $20.0\ \text{bbl (oil)}$ to $\text{bbl (dry) (us)}$.
$$\text{Volume}_{\text{bbl (dry) (us)}} = 20.0 \cdot 1.375$$
$$\text{Volume}_{\text{bbl (dry) (us)}} = 27.5$$
$$\therefore \ 20.0\ \text{bbl (oil)} = 27.5 \ \text{bbl (dry) (us)}$$
Example 2
Convert $90.0\ \text{bbl (oil)}$ to $\text{bbl (dry) (us)}$.
$$\text{Volume}_{\text{bbl (dry) (us)}} = 90.0 \cdot 1.375$$
$$\text{Volume}_{\text{bbl (dry) (us)}} = 123.75$$
$$\therefore \ 90.0\ \text{bbl (oil)} = 123.75 \ \text{bbl (dry) (us)}$$
Example 3
Convert $115.0\ \text{bbl (oil)}$ to $\text{bbl (dry) (us)}$.
$$\text{Volume}_{\text{bbl (dry) (us)}} = 115.0 \cdot 1.375$$
$$\text{Volume}_{\text{bbl (dry) (us)}} = 158.125$$
$$\therefore \ 115.0\ \text{bbl (oil)} = 158.125 \ \text{bbl (dry) (us)}$$
Example 4
Convert $135.0\ \text{bbl (oil)}$ to $\text{bbl (dry) (us)}$.
$$\text{Volume}_{\text{bbl (dry) (us)}} = 135.0 \cdot 1.375$$
$$\text{Volume}_{\text{bbl (dry) (us)}} = 185.625$$
$$\therefore \ 135.0\ \text{bbl (oil)} = 185.625 \ \text{bbl (dry) (us)}$$
Example 5
Convert $185.0\ \text{bbl (oil)}$ to $\text{bbl (dry) (us)}$.
$$\text{Volume}_{\text{bbl (dry) (us)}} = 185.0 \cdot 1.375$$
$$\text{Volume}_{\text{bbl (dry) (us)}} = 254.375$$
$$\therefore \ 185.0\ \text{bbl (oil)} = 254.375 \ \text{bbl (dry) (us)}$$