QUESTION 15 OF 30

What is the difference between True Vertical Depth (TVD) and Measured Depth (MD)?

True Vertical Depth is measured from the surface to the bottom of the borehole or anywhere along its length. The MD is the length of the borehole itself. The TVD is always equal to or less than the MD. In a vertical well, the TVD will equal the MD, but in a directional or horizontal well, TVD and MD will differ.

"True Vertical Depth is measured from the surface to the bottom of the borehole. Measured depth is the length of the borehole itself. This is an important concept when understanding depths within directional wells."

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Petroleum Engineer Mock Interview

What is the difference between True Vertical Depth (TVD) and Measured Depth (MD)?

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30 Petroleum Engineer Interview Questions & Answers