What does Plugged Back Total Depth refer to?

What does Plugged Back Total Depth refer to?

• A. The total depth drilled initially
• B. The depth to which the well has been plugged back
• C. The maximum production depth
• D. The depth of the next planned wellbore

Answer: (B)

Plugged Back Total Depth is the depth down the well to which cement plugs have been set during plugging operations. It shows how far back toward surface the borehole has been sealed to isolate formations and prevent fluid migration. For example, if the well was drilled to a total depth of 10,000 ft but cement plugs are placed down to 7,000 ft, the plugged back total depth is 7,000 ft. This is different from the original drilling depth, from any production depth reached, or from the depth of a planned next wellbore. It documents the effective seal depth used for safety, abandonment, or re-entry planning.

Plugged Back Total Depth is the depth down the well to which cement plugs have been set during plugging operations. It shows how far back toward surface the borehole has been sealed to isolate formations and prevent fluid migration. For example, if the well was drilled to a total depth of 10,000 ft but cement plugs are placed down to 7,000 ft, the plugged back total depth is 7,000 ft. This is different from the original drilling depth, from any production depth reached, or from the depth of a planned next wellbore. It documents the effective seal depth used for safety, abandonment, or re-entry planning.