Wells – Processes – Perforating – weakening – bending or separating pipe at an...
Reexamination Certificate
2011-08-23
2011-08-23
Wright, Giovanna C (Department: 3672)
Wells
Processes
Perforating, weakening, bending or separating pipe at an...
Reexamination Certificate
active
08002035
ABSTRACT:
A perforating apparatus (170) used to perforate a subterranean well. The perforating apparatus (170) includes a generally tubular gun carrier (106) and a charge holder (172) rotatably mounted within the gun carrier (106). At least one shaped charge (102) is mounted in the charge holder (172) and is operable to perforate the well upon detonation. A dynamically adjustable weight system (174) is operably associated to the charge holder (172). The dynamically adjustable weight system (174) includes a plurality of longitudinally extending tubes (176) that are operable to contain a weighted material therein and are operable to adjust the center of gravity (120) of the charge holder (172) such that gravity will cause the charge holder (172) 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.
Bible Sonya
Halliburton Energy Service,s Inc.
Wright Giovanna C
Youst Lawrence R.
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