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.
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.
At the recently held National Ground Water Association trade show in Georgia, we visited with leading pump hoist manufacturers on the trade show floor to check out their latest offerings. Here, we share some of the highlights from those visits.
Pump hoists are no small investment, and it's important to make sound decisions regarding pump hoist selection, operations, and maintenance and repair.
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