Sounds as if you do not know what's wrong with your well or how to fix
it. You need to get someone to look at your well and advise you. I presume
this is an ag well so give the ag extension service a call. They may have
some good, local advice about wells. If they can't help you then you need to
talk to drilling companies. The solution that they will propose will be
based on the equipment they own so get more than one opinion. Or hire an
engineer to look at your well.