Well perforator isolation apparatus and method

A method of perforating a well casing adjacent a subterranean well formation while isolating the formation from well fluids in the remainder of the well, comprising;

• placing a remotely operable well packer, a well perforator and a packer closure in the well;
• positioning the well packer in the well casing at a position in the well on an uphole side of the perforator and the packer;
• operating the well packer to set the packer in a sealing position with the well casing to isolate the perforator and the packer closure from the remainder of well fluids located on the uphole side of the well packer;
• operating the well perforator to perforate the well casing at a downhole position below the previously set well packer to provide fluid communication through the well casing wall between the interior of the well casing below the well packer while isolating the well perforation from the remainder of well fluids;
• removing the previously operated well perforator from the well in an uphole direction by first passing through a passageway in the well packer and then out of the well to free the well of equipment unnecessary for further treatment or well production;
• and
• moving the packer closure in an uphole direction into contact with the well packer and connecting the packer closure to the well packer to close the packer passageway in the well to prevent fluid communication across the well packer and thereby completing the well perforation while isolating the perforated casing from the well fluids uphole of well packer.