In situ expandable tubulars

An expandable tube member for use in geologic structures, said expandable tube member can be used as a 1) liner, 2) screen, 3) pipe section, 4) plug, 5) patch, 6) packer, 7) device to control lost circulation or fluid inflow during drilling operations, 8) device to repair or seal a leak, 9) device to enhance fluid flow, 10) device to provide sand screening, 11) device to repair damaged pipes, casings, or liners, and/or 12) device to stabilize a wellbore, said expandable tube member is formed of a body having an outer surface and an internal cavity that extends a complete longitudinal length of said tube member, said body at least partially formed of an expandable composite material, said expandable composite material includes a polymer matrix and a plurality of expandable filler particles in said polymer matrix, said polymer matrix includes one or more compounds selected from the group consisting of polyaramids, nylon/polyarylates, polycarbonates, polysulfones, polyureas, polyesters, epoxys, polypropylene, and polyethylene, said expandable filler includes one or more materials selected from the group consisting of magnesium oxide, calcium oxide, lithium oxide, borate, selenium, iron, magnesium, manganese, germanium, calcium, aluminum, sodium, lithium, zinc, water-swellable clay, CO2-swellable clay, water-swellable phosphate, CO2-swellable phosphate, water-swellable carbide, CO2-swellable carbide, water-swellable silicate, CO2-swellable silicate, water-swellable borate, CO2-swellable borate, water-swellable sulfate material, and CO2-swellable sulfate material, said expandable filler constitutes 10-80 vol. % of said expandable composite material, said expandable composite material is formulated to expand when said expandable filler particles are partially or fully activated by one or more activation mechanisms selected from the group consisting of a) change in temperature about said expandable tube member and/or said expandable filler from the surface of a ground cavity to a particular location in said ground cavity, b) exposure of said expandable tube member and/or said expandable filler to a certain temperature or temperature range, c) change in pH about said expandable tube member and/or said expandable filler, d) exposure of said expandable tube member and/or said expandable filler to a certain pH or pH range, e) change in salinity about said expandable tube member and/or said expandable filler, f) exposure of said expandable tube member and/or said expandable filler to a certain salinity or salinity range, g) exposure of said expandable tube member and/or said expandable filler to an activation element or compound, h) change in pressure about said expandable tube member and/or said expandable filler from the surface of a ground cavity to a particular location in said ground cavity, i) exposure of said expandable tube member and/or said expandable filler to a certain pressure or pressure range, j) electrical stimulation of said expandable tube member and/or said expandable filler, k) exposure of said expandable tube member and/or said expandable filler to a certain sound frequency, and l) exposure of said expandable tube member and/or said expandable filler to a certain electromagnetic frequency.