PVC Well Casing Pipe for Water Well Project in Peru

PVC Well Casing Pipe for Water Well Project in Peru

A water well project in Peru required large-diameter PVC well casing pipes in 315 mm, 250 mm and 225 mm for groundwater extraction.

The project area was located in a relatively dry region where surface water resources are limited and groundwater is an important source for local water supply and agricultural use. The drilling site had a mixed geological structure, with loose soil and sandy layers in the upper section and more compact formations at greater depth.

Under these conditions, maintaining borehole stability during drilling and casing installation was an important consideration.

Stepped PVC Casing Design

To match the stepped borehole design, different PVC casing diameters were used in different well sections:

• 315 mm PVC casing for the upper section, where a larger borehole diameter was required for stability and installation.
• 250 mm PVC casing for the intermediate section.
• 225 mm PVC casing for the deeper section of the well, providing sufficient internal space for the pump while reducing unnecessary borehole diameter.

The stepped diameter design helped balance borehole stability, installation efficiency and material cost.

Why PVC Well Casing Was Selected

PVC well casing was selected because the groundwater environment required good corrosion resistance and long-term durability.

Compared with steel casing, PVC does not rust and is easier to transport and install, which is particularly useful for drilling sites where access and lifting equipment may be limited.

For this project, the final pipe diameter and wall thickness were selected according to the well depth, geological conditions, borehole diameter and pump size, rather than using one pipe size throughout the entire well.