Shaped charge

Details Shaped charge Shaped charge

2006-05-16

2006-05-16

Bates, Zakiya W. (Department: 3676)

Wells

Processes

Placing fluid into the formation

C166S055200, C166S063000, C166S299000

Reexamination Certificate

active

07044225

ABSTRACT:
A shaped charge is formed having a pressed polymer pellet positioned between the explosive charge and the metal liner. The shock wave resulting from detonation of the explosive passes through the polymer to the liner. The collapse of the liner results in the formations of a jet—piercing the casing. The high-pressure gaseous by-products of the explosive force (inject) the polymer in the perforation “tunnel”. This shockwave will also start the decomposition of the polymer. The polymer will continue to decompose during its injection into the tunnel. As it is being injected into the perforation tunnel, the residue heat generated by the explosive combined with the shear and induced plastic flow, the polymer will ignite and burn. The burn time will be an order of magnitude greater than the explosive; the pressure generated by the polymer will be an order of magnitude less than the explosive.

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Patrick Brousseau, Helen Dorsett, Matthew Cliff, C. John Anderson. “Detonation Properties of Explosives Containing Nanometric Aluminum Powder.” 2002 Deonation Symposium. San Diego, CA.

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