Methods of Construction

The construction of a well system involves setting up the drilling equipment, drilling the well hole, installing casings and liners, grouting and sealing annular spaces, installing well screens and fittings, packing gravel and placing material, and developing the well. Detailed discussions on these aspects can be found in Johnson Division, UOP, Inc. (1975). In addition, Figure 9.17.3 shows typical well construction detail. In recent years, several innovative well installation techniques have been developed including in-

The costs of well systems vary from site to site depending on the geology, the depth of the aquifer, the extent and type of contamination, the periods and durations of pumping, and the electrical power requirements. A cost analysis study for a variety of well systems can be found in Cambel and Lehr (1977) and in Powers (1981).

0 0

Post a comment