Lost circulation shapes

A system for sealing a lost circulation zone associated with a subterranean well, the system including:

• a lost circulation material;
• and
• a lost circulation shape, the lost circulation shape being a hollow body having an outer skin and an open interior chamber filled with a drilling fluid, where the outer skin includes a plurality of perforations that extend through the outer skin, providing fluid communication between an exterior of the lost circulation shape and the open interior chamber;
• where
• the lost circulation shape has a minimum size and a maximum size, where:
• the minimum size of the lost circulation shape is such that a smallest minimum sphere in which the lost circulation shape having the minimum size could fit has a diameter of 5 mm;
• and the maximum size of the lost circulation shape is such that a smallest maximum sphere in which the lost circulation shape having the maximum size could fit has a diameter of 15 mm;
• where
• at least one of the plurality of perforations is a filling hole, the filling hole sized to provide for filling the open interior chamber with the drilling fluid, where the filling hole has a diameter in a range of 2.5 mm to 5 mm;
• and
• the other of the plurality of perforations are sized to prohibit a passage of lost circulation material between the exterior of the lost circulation shape and the open interior chamber.