Boring or penetrating the earth – Boring with explosion in inaccessible hole – With position orienting or indicating
Reexamination Certificate
2011-01-06
2011-11-29
Andrews, David (Department: 3672)
Boring or penetrating the earth
Boring with explosion in inaccessible hole
With position orienting or indicating
C166S297000
Reexamination Certificate
active
08066083
ABSTRACT:
A perforating apparatus (190) used to perforate a subterranean well. The perforating apparatus (190) includes a generally tubular gun carrier (106) and a charge holder (192) rotatably mounted within the gun carrier (106). At least one shaped charge (102) is mounted in the charge holder (192) and is operable to perforate the well upon detonation. A dynamically adjustable weight system (194) including a plurality malleable weight members (196) is operably associated to the charge holder (192). The dynamically adjustable weight system (194) is operable to adjust the center of gravity (120) of the charge holder (192) such that gravity will cause the charge holder (192) to rotate within the gun carrier (106) to position the at least one shaped charge (102) in a desired circumferential direction relative to the well prior to perforating.
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ISR and Written Opinion for PCT/US2010/023545 (International Searching Authority—EPO) Sep. 27, 2010.
Burleson John D.
Hales John H.
Novak Allison E.
Andrews David
Halliburton Energy Service,s Inc.
Youst Lawrence R.
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