Method and apparatus for selective down hole fluid communication
First Claim
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1. An apparatus for penetrating a formation and selectively establishing fluid communication with the formation, comprising:
- a casing having at least one aperture through a wall thereof and comprising a valve member positioned interior of the casing and having a first position wherein the aperture is obstructed and a second position wherein the aperture is open; and
at least one energetic device positioned exterior of the casing and configured to penetrate a formation surrounding the casing without penetrating the casing.
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Abstract
Methods and apparatus for perforating a formation in a wellbore without perforating a well bore casing. The methods and apparatus include an external casing perforating device configured so as not to perforate the casing. The interior of the perforating device serves as a fluid flow path between the casing and the formation following perforation and a valve in the casing selectively opens and closes the flow path.
75 Citations
32 Claims
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1. An apparatus for penetrating a formation and selectively establishing fluid communication with the formation, comprising:
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a casing having at least one aperture through a wall thereof and comprising a valve member positioned interior of the casing and having a first position wherein the aperture is obstructed and a second position wherein the aperture is open; and at least one energetic device positioned exterior of the casing and configured to penetrate a formation surrounding the casing without penetrating the casing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for selectively establishing fluid communication between an interior of a casing and a formation of interest, comprising:
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penetrating the formation of interest while not perforating the casing, using an energetic device; and opening a fluid flow path between the formation of interest and an interior of the casing through an annulus between the formation and the casing. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A method for selectively establishing fluid communication between an interior of a casing and a formation of interest, comprising:
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penetrating the formation of interest while not perforating the casing, using an energetic device; and opening a fluid flow path between the formation of interest and the casing using a fluid pressure generator. - View Dependent Claims (28, 29, 30, 31, 32)
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Specification