Water Well Drilling Methods
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Bucket Auger
Bucket augers use a rotating cylindrical bucket with ‘teeth’ on the end that fills with soil as it rotates. The bucket is then brought to the surface and the soil is dumped into a spoil pile. The process repeats until the desired depth is reached.
Advantages
- Can be used in multiple soil types
- Quick installation for wells 100 ft. deep or less
- Large diameter borehole (16”-36”+) allows for the use of a larger screen/casing
- Rigs can be track mounted for increased access & tight conditions
- Visual samples can be taken from spoil pile
Drilling Methods
Choosing which drilling method to utilize during the the installation of dewatering wells or wellpoints is an important factor in the overall design of a dewatering system. Careful consideration regarding the most cost-efficient method. Different drilling techniques can impact the following:
Jetting
Bucket augers use a rotating cylindrical bucket with ‘teeth’ on the end that fills with soil as it rotates. The bucket is then brought to the surface and the soil is dumped into a spoil pile. The process repeats until the desired depth is reached.
Advantages
- Quick installation in sandier soils
- Quick installation for wells 100 ft. deep or less
- Large diameter borehole (16”-36”+) allows for the use of a larger screen/casing
Site water can cause the following:
- Shoring instability
- Erosion
- Slope failure