Hansen's Well Drilling, Inc. Well & Pumps

Bedrock and Gravel Wells

Hansen's Well Drilling, Inc.

hansenswelldrilling.com 207-839-3293 or 877-839-3293

Bedrock Wells

A bedrock well gets water from fractures in the bedrock. We drill an open hole into the overburden and then into bedrock. Then we set steal casing, using a drive shoe, to make sure that the casing is sealed properly into bedrock. We then drill an open hole into the bedrock until we hit fractures to obtain water. If we don't get enough water, then we will typically hydro fracture the well. Our average well ranges from 100 feet deep to 500 feet deep and an average amount of casing is 50 feet.

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Well Drilling

Methods of obtaining Water

Gravel Wells

A gravel well is drilled into a sand and/or gravel aquifer. We drill down into the sand and /or gravel and set a stainless steel well screen on steel casing. Then, with the use of a jetting tool, we develop the well screen to remove the finer silts from the outside of the screen and to pull the coarser gravel in next to the screen. Gravel wells can produce very high yields of water, but you must be in the right area to be able to get one. The average gravel well ranges in depth from 50 feet deep to 100 feet deep.

Geothermal Wells

A geothermal well is drilled into the earth and relies on the earth's constant temperature to heat and cool your home. There are basically two different types; one is open loop and the other is closed loop. We are International Ground Source Heat Pump Association (IGSHPA) certified.

The photo to left is showing two closed geothermal wells being drilled at the same time. The photos below show the geothermal u-bend pipe going in and out of a grouted geothermal wells.

Pump Systems

A pump system consists of a pump, being installed in the well and the pipe and wire being installed between the house and well and a pressure tank being placed in the house. A pump system needs to be properly sized and installed, in order to give the home enough volume and pressure. The size of the pump system depends on the depth and flow of the well, as well as the amount of fixtures that are being supplied.

Water Testing,

Quality &

GPM

Water Testing, Quality & GPM

We recommend that you test your water, before you consume it. We chlorinate all of our wells.

A filtration system may be needed depending on the quality of your water.

Recommended minimum flow rates for single family homes are as follows:

Well Depth Recovery Rates

75 Feet 5 GPM

110 Feet 4 GPM

160 Feet 3 GPM

250 Feet 2 GPM

320 Feet 1 GPM

420 Feet 1/2 GPM

These are based upon a static water level of 25 feet below the ground surface.

Every foot of 6" well stores approximately 1 1/2 gallons of water.

We drill two types of water wells, bedrock and gravel wells. Most of the wells that we drill are bedrock wells, as are most of the wells in Maine.

Drilling, developing and maintaining a water well is no job for an amateur. Only a professional water well contractor is familiar with all the new methods and equipment needed to bring in a good supply of ground water.

Different kinds of wells call for different techniques which require a great deal of contractor know-how. The water well contractor need to be water specialists, engineers and craftsmen.

Hydro Fracturing

Hydrofracturing is a development method used to increase the flow and open new fractures in the bedrock. We place a packer down below the steel casing and with the use of a pump, we force water to go down through the packer and into the bedrock to open up fractures.