Downhole metal packer and method for manufacturing and using same

The invention relates to the technical field of a downhole packer for petroleum industry and is applied to the hierarchical production of thermal recovery wells. The invention discloses a downhole metal packer which comprises a center tube, a closed annular container sleeves the outer circumference of the central tube, the annular container has an outer wall and an inner wall, the outer wall is amalleable metal material, and the annular container is filled with a liquid. The invention provides a method for manufacturing the downhole metal packer, and the method comprises the steps of formingan outer wall into a rib shape and loading liquid. The invention also provides a method for using the downhole metal packer, and the method comprises the steps of injecting high-temperature steam through a steam injection pipe column, determining the pressure in the packer through calculation or table look-up, and determining a working pressure difference. Since the metal container is arranged inthe packer of the invention