Wells – Processes – Perforating – weakening – bending or separating pipe at an...
Reexamination Certificate
2007-06-05
2007-06-05
Tsay, Frank S. (Department: 3672)
Wells
Processes
Perforating, weakening, bending or separating pipe at an...
C166S055300
Reexamination Certificate
active
11019748
ABSTRACT:
A device for perforating a tubing string residing in a well bore includes a tubular housing adapted to pass through the tubing string. At least one perforating body is provided residing in the housing, and has a point adapted to pierce the tubing string. A piston is received within the housing, the piston configured such that pressure applied to a first side of the piston causes the piston to move in a first direction. An actuator body is received within the housing and configured for movement in the first direction with the piston. The actuator body has a sloped wedge surface adapted to wedge the at least one perforating body radially outward to pierce the tubing string with the point when the actuator body is moved in the first direction.
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Invitation to pay Additional Fees (3 pages) and Annex to Form PCT/ISA/206 Communication Relating to the Results of the Partial International Search (2 pages) for International Application No. PCT/US2005/046431 mailed May 2, 2006.
Notification of Transmittal of the International Search Report and the Written Opinion of the International Searching Authority, or the Declaration (3 pages), International Search Report (7 pages), and Written Opinion of the International Searching Authority (8 pages) for International Application No. PCT/US2005/046431 mailed Aug. 14, 2006.
CDX Gas, LLC
Fish & Richardson P.C.
Tsay Frank S.
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