Filter plug to prevent proppant flowback

A filter plug (370,fig.3D) a well system (100,fig.1) and a method for fracturing a well system (100, fig.1). The filter plug (190,fig.1) comprises a filtration skeleton (210) and a degradable material (220,fig.2B) configured to lodge within a port (325) in a wellbore, and thus substantially plug the port when the degradable material (220,fig.2B) remains intact with the filtration skeleton (210,fig.2B) and allows the filtration skeleton (210,fig.2B) to filter particulate matter as fluid passed there through when the degradable material (220,fig.2B) no longer remains intact with the filtration skeleton (210,fig.2B). In addition, inside the filtration skeleton (210,fig.2B) there is a swellable material configured to swell when the degradable material (220) no longer remains intact with the filtration skeleton (210,fig.2B). Optionally, inside the filtration skeleton (210,fig.2B) is a metal foam, wherein the metal foam is an open cell metal foam. Also included are embodiments wherein the filtration skeleton (210) has a compressed state when the degradable material (220,fig.2B) is intact and an uncompressed state when the degradable material (220,fig.2B) is no longer intact and wherein the degradable material (220,fig.2B) is a matrix of degradable material (220,fig.2B).