The original depth recorded while drilling an oil or gas well is known as the Driller's Depth.
Read more about Driller's Depth: The Problem, Dealing With Driller Depth Errors, Examples
Famous quotes containing the word depth:
“Tears, idle tears, I know not what they mean,
Tears from the depth of some divine despair
Rise in the heart, and gather to the eyes,
In looking on the happy autumn-fields,
And thinking of the days that are no more.”
—Alfred Tennyson (1809–1892)