Compressible objects having a predetermined internal...

Details Compressible objects having a predetermined internal... Compressible objects having a predetermined internal...

C - Chemistry, Metallurgy

09

K

C09K 8/035 (2006.01) C08J 5/00 (2006.01) E21B 21/00 (2006.01)

Patent

CA 2652406

A compressible object is described that may be utilized in drilling mud and with a drilling system to manage the density of the drilling mud. The compressible object includes a shell that encloses an interior region. Also, the compressible object 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 and wherein the shell being designed to reduce localized strains of the compressible object during expansion and compression of the compressible object.

L'invention concerne un objet compressible susceptible d'être utilisé dans une boue de forage et avec un système de forage afin de gérer la densité de la boue de forage. Ledit objet compressible comprend une enveloppe définissant une région intérieure. L'objet compressible possède en outre une pression interne (i) supérieure à environ 200 livres par pouce carré à la pression atmosphérique et (ii) choisie en fonction d'une pression externe donnée, les pressions externes dépassant la pression interne ayant pour effet de réduire le volume de l'objet compressible et l'enveloppe étant conçue pour réduire les contraintes localisées subies par l'objet lors de son expansion et de sa compression.

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