MD vs. TVD Terminology

Oil and Gas Leasing Help
1

What would 11,998’ MD/7862’ TVD refer to on a horizontal drill permit application? I assume TVD is total vertical but what is MD and what is the relationship?

2

Measured Depth = TVD + Horizontal Lateral Length

3

Thanks

Steve W Bye said:

Reagan “R.T.” Dukes said:

Measured Depth = TVD + Horizontal Lateral Length