Perforating tubulars
AssigneeCDX Gas, LLC
InventorJoseph Zupanick
Life of this patent
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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.
Claims16
A device for perforating a tubing string residing in a well bore, comprising:
- a tubular housing adapted to pass through the tubing string;
- at least one perforating body residing in the housing, the at least one perforating body having a point adapted to pierce the tubing string;
- a piston 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;
- and
- an actuator body received within the housing and configured for movement in the first direction with the piston, the actuator body having 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.
A method of perforating a tubing string in a well bore, comprising:
- passing a perforating tool coupled to a working string through an interior of the tubing string to a desired location for perforating, the perforating tool having a piston and at least one perforating body adapted to pierce the tubing string;
- applying pressure to the piston through the working string to translate the piston;
- extending the at least one perforating body radially outward to pierce the tubing string in response to the translation of the piston.
Dependencies are inferred from the claim text.