Wells – Processes – Perforating – weakening – bending or separating pipe at an...
Reexamination Certificate
2011-01-06
2011-11-22
Wright, Giovanna (Department: 3672)
Wells
Processes
Perforating, weakening, bending or separating pipe at an...
C166S050000, C166S055100, C166S255200, C175S004600
Reexamination Certificate
active
08061425
ABSTRACT:
A perforating apparatus (240) used to perforate a subterranean well. The perforating apparatus (240) includes a generally tubular gun carrier (106) and a charge holder (242) rotatably mounted within the gun carrier (106). At least one shaped charge (246) is mounted in the charge holder (242) and is operable to perforate the well upon detonation. A dynamically adjustable weight system including a weight tube (250) that is selectively rotatable relative to the charge holder (242) is operable to adjust the center of gravity (120) of the charge holder (242) such that gravity will cause the charge holder (242) to rotate within the gun carrier (106) to position the at least one shaped charge (246) 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.
Halliburton Energy Service,s Inc.
Wright Giovanna
Youst Lawrence R.
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