Mar

Ways To Construct Satisfactory Water Well

A water well is much more than a hole in the ground. To prevent groundwater contamination, a well constructor must use proper methods and equipment. Licensed and bonded water-well constructors have the equipment, knowledge, and experience required for proper well construction. For this reason, most states discourage landowners from drilling a well themselves. If a landowner decides to drill, alter, or abandon a well on his own property, he should first consult with the local regulating authorities to become familiar with specific construction requirement for the area.
There are many ways to construct a satisfactory well. The intended use and local geology usually dictate which methods will work in a specific area. Some of the common construction methods include digging, driving, and drilling.
A dug well is built by excavating a hole into a water-bearing zone, lowering a casing into the aquifer, and constructing the seal. Dug wells usually are inexpensive, but are restricted to the near-surface, which may be insufficient to provide ample water quantity of suitable quality. A driven well typically consists of steel point attached to a section of perforated pipe or stiff screen, and sections of solid pipe. After digging or auguring an oversized hole to later accommodate the seal, the well constructor drives the assembly into the earth until the screen or perforations penetrate an aquifer; then he pours the seal. Most wells are constructed with well-drilling equipment. The two main types of drilling machines are the cable tool and the rotary drill.
The cable tool uses a heavy string of tools (bits), dropped repeatedly over the same point, to loosen, fracture and pulverize the earth so that it may then be lifted out of the hole with a bailing bucket. The loosened material and pulverized materials are referred to as drill cuttings. In dry formations, water may be added to the hole to hold the cuttings in suspension so they may be more easily lifted. The bailing bucket is a long cylinder, fitted with a one-way valve at the bottom. The bucket is lowered into the hole, then lifted and drained as the hole is advanced.
Rotary drills use hardened drill bits to cut through the earth. Compressed air, water, or special water-based fluid called drilling mud is used to suspend the cuttings and lift them from the hole. This mud is usually forced down the inside of the drill stem, past the drill bit, where it picks up the cuttings, then up the outside of this drill stem to the land surface. The drilling mud also helps hold the hole open and forms a cake or barrier inside the hole so the fluid and cuttings are forced up the hole rather than into the formation.

No doubt water has an important place in our lives. In many cases people want to have an independent or alternative water supply source. If you are one of those who need information on well drilling, please visit this site. There you may find lots of details about boreholes for water and what is required for them.

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