Well casing and cementing protect the well from collapse and surface contamination.

Well casing and cementing protect the well from collapse and surface contamination.

• A. True
• B. False
• C. Not sure
• D. Not applicable

Answer: (A)

The main idea is that well casing and cementing serve two essential roles: they provide structural support to prevent the borehole from collapsing, and they create a hydraulic seal that isolates the well from surrounding formations and the surface. The casing lines the drilled hole, giving it rigidity, while the cement pumped into the annulus between the casing and the borehole seals gaps and prevents fluids from migrating between different rock layers or from surface contamination down into the well. This combination protects the water supply by keeping contaminated surface water or drilling fluids out and by preserving the integrity of the aquifer. If you were uncertain, remember that without proper casing and cementing, a well can become unstable and contaminants can more easily enter the well, compromising water quality.

The main idea is that well casing and cementing serve two essential roles: they provide structural support to prevent the borehole from collapsing, and they create a hydraulic seal that isolates the well from surrounding formations and the surface. The casing lines the drilled hole, giving it rigidity, while the cement pumped into the annulus between the casing and the borehole seals gaps and prevents fluids from migrating between different rock layers or from surface contamination down into the well. This combination protects the water supply by keeping contaminated surface water or drilling fluids out and by preserving the integrity of the aquifer. If you were uncertain, remember that without proper casing and cementing, a well can become unstable and contaminants can more easily enter the well, compromising water quality.