Hi Mohamed, I think ...
Published by Muhammad Alfalah Fauzi, CFD Engineer Intern at Institut für Wasserbau und Technische Hydromechanik (IWD) - TU Dresden
Hi Mohamed,
I think everyone has given helpful insight. The main reason is the cost and equipment. I don’t see any relevances between your field technical difficulties and decision to strictly use percussion isntead of rotary.
However, I found a referece that might help to enlighten related to advantages and disadvantages of water well drilling method:
https://www.michigan.gov/documents/deq/deq-wb-dwehs-gwwfwim-section5_183030_7.pdf
Hope this help, thanks.