Perforation alignment tool for jet drilling, perforating and...

Wells – Processes – Perforating – weakening – bending or separating pipe at an...

Reexamination Certificate

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C166S308100, C166S055000

Reexamination Certificate

active

10961498

ABSTRACT:
Method and apparatus are provided for pumping operations that may be used to form perforations in the casing of a well, clean perforations and drill drain holes through perforations. A plunger is placed in a reference perforation and the pumping operations may be performed through a nozzle at a known location with respect to the reference perforation. The nozzle may be attached to a flexible hose to drill a drain hole or may be inserted in a body on the bottom of a tubing string. Addition apparatus and method are provided to insure that the plunger or plungers are maintained in a reference perforation or perforations when pumping operations are carried out through tubing.

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“Fluid-actuated Circulating Sub/Riser Jetting Tool”, BJ Services Company, Mar. 13, 2003.
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“SandCADE software”, Schlumberger, 1999.
“USPTO Search”, Hits 1 thru 50, Search Terms: perforation, casing, jet, clean and spring, Jun. 30, 2004.
“USPTO Search”, Hits 1 thru 50, Search Terms: Same as above plus ball, Jun. 30, 2004.

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