High performance powdered metal mixtures for shaped charge...

Specialized metallurgical processes – compositions for use therei – Compositions – Consolidated metal powder compositions

Reexamination Certificate

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C102S306000, C102S307000, C102S476000

Reexamination Certificate

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07811354

ABSTRACT:
A liner (18) for a shaped charge (10) that utilizes a high performance powered metal mixture to achieve improved penetration depths during the perforation of a wellbore is disclosed. The high performance powdered metal mixture includes powdered tungsten and powdered metal binder. The powered metal binder may be selected from the group consisting of tantalum, molybdenum, lead, cooper and combination thereof. This mixture is compressively formed into a substantially conically shaped liner (18).

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Declaration of David J. Liedel, Ph.D; Feb. 21, 2008.
Halliburton's Substantive Motion 6; Before the Board of Patent Appeals and Interferences; Feb. 21, 2008.

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