Manual drilling: Shipo method

An option to make manual drilled tube wells is the so called SHIPO drill.

Advantages compared to hand dug wells

• Is faster
• Can be cheaper in soils where a well needs to be completely lined.
• More water guarantee in dry season since it can drill deep into the aquifer
• Can be done at any time no need to wait for the dry season
• Safer. Hand dug wells may collapse

Disadvantages compared hand digging:

• Requires specific tools
• Does not work in case of boulders or gravel larger than 2 cm
• Requires  skilled technicians
• Less storage capacity
• A disadvantage of a borehole (compared to a hand dug well) is that there is no access to the water if the pumps is broken

Information

• SHIPO drill method is used much in Tanzania and trained via, promoted by SHIPO.
• It is a combination of sludging and percussion and can be combined with Jetting.
• It has a heavy lower drill pipe and other drill pipes are of PVC so light weight
• It makes tube wells with casings of 2 to 6 inch diameter and drill to 50 meters deep
• Cost depends on soil type, length of screen and diameter of casing