Expandable tubulars for use in geologic structures

A tubular assembly for use in geologic structures, comprising:

• a plurality of curved layers that each have a concave inner surface and a convex outer surface that are configured to overlap each other to form the tubular assembly having a circumference with an axis extending therethrough, wherein a portion of the concave inner surface forms a portion of an inner diameter of the tubular assembly and a portion of the convex outer surface forms a portion of the outer diameter of the tubular assembly;
• a plurality of attachment points that secure some of the concave inner surfaces of the curved layers to the convex outer surfaces of adjacent curved layers to prevent the curved layers from moving circumferentially about the axis with respect to each other at the attachment points;
• and
• a restraining mechanism that temporarily holds the plurality of curved layers of the tubular assembly in a first diameter;
• wherein the plurality of curved layers are made of a high strength material allowing the curved layers to store expansive energy therein and deflect so the tubular assembly expands from the first diameter to a second diameter that is larger than the first diameter when the restraining mechanism is released.

A tubular assembly for use in geologic structures, comprising:

• a plurality of curved layers that each have a concave inner surface and a convex outer surface that are configured to overlap each other to form the tubular assembly having a circumference with an axis extending therethrough, wherein a portion of the concave inner surface forms a portion of an inner diameter of the tubular assembly and a portion of the convex outer surface forms a portion of the outer diameter of the tubular assembly;
• a plurality of attachment points that secure some of the concave inner surfaces of the curved layers to the convex outer surfaces of adjacent curved layers to prevent the curved layers from moving circumferentially about the axis with respect to each other at the attachment points;
• and
• a sliding surface between the convex outer surface of a first curved layer and the concave surface of a second curved layer that is adjacent to the first curved layer;
• wherein the plurality of curved layers form a spiral pattern and the plurality of curved layers are made of an elastic material allowing the curved layers to store expansive energy therein and deflect so the diameter of the tubular assembly expands from the first diameter to a second diameter that is larger than the first diameter.