Every such instrument duly executed as required by law shall be a conveyance in fee simple of the premises described to the grantee, his heirs, and assigns, with covenants on the part of the grantor, his heirs, and personal representatives,
Such covenants shall be obligatory upon any grantor, his heirs, and personal representatives, as fully and with like effect as if written at length in such deed.
SDCL 43-25-6