I have dirty well water every time it rains and it stays dirty for up to 3 weeks. Also there is standing water covering the pump. Can u help.

there is standing water covering the pump. Are we talking about a surface or a submersible pump? How deep is your well? Sounds like rain water runoff is taking soil down into your well. Please describe your system. Back to you, Tom

I believe it is submersible not sure. How can I tell

If you had a surface pump you would be able to see it. If not then you have a submersible pump. As I've stated. Sounds like rain water runoff is taking soil down into your well and it takes some time for it to settle to the bottom of the well. Have you talked to any well people about this? Cheers, Tom

No I haven't an yes I can see the pump I just drained off some water so it is about 8 inches below the top of pump. The water is getting clearer already.

While this is a explanation and not a solution. This may happen every time you get a hard rain. I this is a bother I'd get a estimate on repairing the problem.
But for now you're running clear. The way I see it you have three options here:
1. Call in outside help to see what can be done,
2. Install a house filter to trap the dirt. **OR**
3. Live with it!
Good luck in whatever you decide, Tom