EVERYDAY SCIENCE

Detailed explanation-1: -Dug wells-These are shallow wells that are dug by hand or with simple tools. Driven wells-These are shallow to medium depth wells that are made by driving a tube into the soil until it reaches an aquifer. Drilled wells-These are drilled using machinery and can be over 1, 000 feet in depth!

Detailed explanation-2: -A well is an excavation or structure created in the ground by digging, driving, or drilling to access liquid resources, usually water. The oldest and most common kind of well is a water well, to access groundwater in underground aquifers.

Detailed explanation-3: -A wellbore is the actual hole that forms the well. A wellbore can be encased by materials such as steel and cement, or it may be uncased. The motivation for drilling a wellbore is usually to extract oil or gas for a protracted period of time.

Detailed explanation-4: -Dug wells are holes in the ground dug by shovel or backhoe. Historically, a dug well was excavated below the groundwater table until incoming water exceeded the digger’s bailing rate. The well was then lined (cased) with stones, brick, tile, or other material to prevent collapse.

Detailed explanation-5: -Dug wells are relatively easy to identify by the hole in the ground, often protected by a cover to prevent someone from falling in. Drilled wells have no hole but instead have a pipe protruding from the surface of the soil.