Need factors in considering dug well or borewell for irrigation purposes in Visakhapatnam, Andhra Pradesh

I have three and half acres of agricultural land in Vizag. Exact location is at a village called Bheemunipatnam, about 22 km from Vizag. Currently mango trees are being cultivated in the land. In order to undertake proper irrigation of the land I plan to dig a well. I would like to know if I should undertake to drill a borewell or implement a dug well in its place? Space is not a limitation.
What are the factors that should be weighed to decide on the type of the well?

Jyoti Chereddy