Extending an Existing Well

[lzenglish]

Hello. I have an existing Well, with a 6 inch casing, and is 200 feet deep. The water level has dropped 25 to 30 feet in the last 35 years. I have added as much drop pipe as I can, without pumping sand. My question is, Can a 6 inch cased Well be extended?, and if so, would it fall under a different permit guidline such as (repair), to eliminate any new grouting, and New Well Permit?
Thanks

[lzenglish]

Thanks for the reply, but maybe I worded my question poorly. I want to have it drilled to 300 feet, thru the existing casing. What is a K-pack?
Thanks

[lzenglish]

A asked a friend of mind. This will vary place to place. He said you would NOT need a permit in his state and grout will not matter as it will not be possible.

Thanks for checking