Pipe and Casing

You may want to visit roscoemoss at

www.roscoemoss.com/tech_manuals/gwwc/gwwc.pdf

for a complete overview of well casing and piping.

Well casing is regulated so you may also want to visit the local regulator's site or office before installing. If you are a well driller in North America I would suggest talking to the National ground water Ass. at:

www.ngwa.org/agwse.

Well casing must be able to withstand hydrostatic pressures and corrosion that may be present. The annular space (the space between the well casing and the original bore hole) is usually 1 inches greater radius than the pipe and must be sealed with an impervious grout. This seal is usually cement or bentonite or a combination of both. Again this is regulated and local drillers should be fully aware of the minimum requirements.

Hope this helps.