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Manual Drilling Standards for Boreholes by cherogonya is a document available to read on EtoBox.

What is Manual Drilling Standards for Boreholes about?

The document provides technical standards for manually drilled boreholes between 30 and 50 meters deep set by the Ministry of Fisheries, Pastoral and Rural Hydraulics. It specifies standards for drilling technique, borehole diameter and straightness, casing material and dimensions, screen material and placement, gravel pack size and placement, and development methods. Standards are provided for borehole construction elements like casing, screen, filter pack, and seals to prevent contamination and improve we

Author

cherogonya

Language

EN