Method for fabricating compressible objects for a variable...

Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – With internal application of fluid pressure

Reexamination Certificate

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C264S574000, C166S280100, C507S209000, C507S270000, C428S402200

Reexamination Certificate

active

07972555

ABSTRACT:
Methods for fabricating compressible object are described. These compressible objects may be utilized in drilling mud and with a drilling system to manage the density of the drilling mud. The method includes selecting an architecture for a compressible object; selecting a wall material for the compressible object; and fabricating the compressible object, wherein the compressible object has a shell that encloses an interior region, and has an internal pressure (i) greater than about 200 pounds per square inch at atmospheric pressure and (ii) selected for a predetermined external pressure, wherein external pressures that exceed the internal pressure reduce the volume of the compressible object.

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