Well surging will dislodge fine material from the _______.

• A. Well face or screen
• B. Well casing
• C. Annulus
• D. Well bore

Answer: (A)

Surging uses rapid pressure changes to create short, high-velocity water pulses that act at the interface where water enters the well—the well face or screen. Fines often accumulate on or near the screen, clogging the slots and reducing flow. The surge mechanically loosens and lifts these fine particles off the screen surface, flushing them out and restoring flow paths. The other areas—well casing, the annulus, and the bore—aren’t the surfaces where these fines are held and then dislodged by the surge, so they’re not the primary source described here.