Expected reserves to be recovered from existing wells and facilities.

• A. Undeveloped Reserves
• B. Behind-Pipe Reserves
• C. Developed Reserves
• D. Prospect

Answer: (C)

Developed reserves are the portion of proved reserves that can be recovered using the field’s existing wells and surface facilities. This means the infrastructure to bring those amounts to surface is already in place, so little or no additional major construction is needed to start producing. Undeveloped reserves, by contrast, require drilling new wells or building new facilities to access them. A prospect refers to something not yet discovered or proven. So the statement about expected reserves recoverable from existing wells and facilities matches developed reserves.