I’m not sure what you mean by “get a deed” either. However, if an oil and gas company asked you to sign a lease, then it sounds to me like they have reason to believe you own some interest. If you could provide a little more detail about your situation, we’d be able to help you more. If you inherited this interest, then you likely won’t need a deed. You probably just need to make sure the proper heirship documents are filed of record.