The distinguishing feature of the dual-rotary (DR) drill rig is a lower rotary drive, which is used to independently advance casing up to 40 inches, depending on the drill model.

Check valves permit water flow in one direction only, and are required on all submersible pump installations.

Reverse circulation drilling was developed to allow for larger borehole drilling without limiting the factors of drilling fluid pump capacities.

Drilling muds have four basic properties that determine the behavior of the mud as a drilling fluid – viscosity, density, gel strength and filtration. Several other properties, although of lesser importance, need to be checked, especially if problems are anticipated or encountered.

Regardless of purpose, almost all water wells must be provided with a means of protecting the borehole and provision made for the entrance of water from surrounding aquifers. This article discusses casing and screen materials in common use in the word today. It also sets forth the factors to be considered in their choice.

Effective irrigation is not possible without a reliable water source. Irrigation wells must produce a high volume of water during the driest months of the year, July and August. To maintain consistent, high production from year to year, a well requires annual maintenance, just like any other piece of valuable equipment.

A look at the available water treatment methods.

An essential part of disinfection.

Read about what to consider when sealing a monitoring well.