A method of creating a lateral wellbore in a subterranean formation comprising: introducing a casing string into a wellbore, wherein the casing string comprises at least one casing section, wherein the casing section comprises: a body comprising a wall; a window, wherein the window is an opening in the wall of the body; and a covering, wherein the covering: (i) is composed of a composite material wherein the composite material comprises a first layer, wherein the first layer is a pressure-bearing layer that is capable of withstanding a specific pressure differential, and a second layer, wherein the second layer is a structural layer that provides a desired strength to the composite material; (ii) is located on the outer surface of the body; (iii) covers the window; and (iv) spans at least a sufficient distance beyond the perimeter of the window such that the casing section has a desired pressure rating at the location of the window; drilling through at least a portion of the covering from the inside of the casing string to expose the window; and forming the lateral wellbore adjacent to the exposed window; wherein one or more of the layers of the composite material undergo a phase transformation from a solid to a liquid or semi-liquid after introduction into the wellbore and wherein the one or more layers melt at the bottomhole temperature of the wellbore. introducing a casing string into a wellbore, wherein the casing string comprises at least one casing section, wherein the casing section comprises: a body comprising a wall; a window, wherein the window is an opening in the wall of the body; and a covering, wherein the covering: (i) is composed of a composite material wherein the composite material comprises a first layer, wherein the first layer is a pressure-bearing layer that is capable of withstanding a specific pressure differential, and a second layer, wherein the second layer is a structural layer that provides a desired strength to the composite material; (ii) is located on the outer surface of the body; (iii) covers the window; and (iv) spans at least a sufficient distance beyond the perimeter of the window such that the casing section has a desired pressure rating at the location of the window; a body comprising a wall; a window, wherein the window is an opening in the wall of the body; and a covering, wherein the covering: (i) is composed of a composite material wherein the composite material comprises a first layer, wherein the first layer is a pressure-bearing layer that is capable of withstanding a specific pressure differential, and a second layer, wherein the second layer is a structural layer that provides a desired strength to the composite material; (ii) is located on the outer surface of the body; (iii) covers the window; and (iv) spans at least a sufficient distance beyond the perimeter of the window such that the casing section has a desired pressure rating at the location of the window; (i) is composed of a composite material wherein the composite material comprises a first layer, wherein the first layer is a pressure-bearing layer that is capable of withstanding a specific pressure differential, and a second layer, wherein the second layer is a structural layer that provides a desired strength to the composite material; (ii) is located on the outer surface of the body; (iii) covers the window; and (iv) spans at least a sufficient distance beyond the perimeter of the window such that the casing section has a desired pressure rating at the location of the window; drilling through at least a portion of the covering from the inside of the casing string to expose the window; and forming the lateral wellbore adjacent to the exposed window; wherein one or more of the layers of the composite material undergo a phase transformation from a solid to a liquid or semi-liquid after introduction into the wellbore and wherein the one or more layers melt at the bottomhole temperature of the wellbore.