Method and apparatus for selective down hole fluid communication
First Claim
Patent Images
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 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.
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Citations
33 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 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. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A down hole fluid collection and distribution apparatus comprising:
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an elongate manifold disposable exterior of a casing and having a first configuration wherein an interior of the manifold is fluidically isolated from a well bore there around and a second configuration including at least two axially spaced perforations through at least one of a wall and walls of the manifold; and a fluid flow path within the manifold, the flow path in fluid communication with the two perforations and at least one aperture of the casing, the aperture being axially spaced from the perforations. - View Dependent Claims (24, 25, 26, 27, 28)
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29. A method for fluidically accessing distributed locations within a downhole formation comprising:
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providing a fluid flow path traversing a length of the formation, the flow path being in fluid communication with an interior of a casing positioned inside a well bore and with longitudinally distributed locations in the formation, wherein the flow path is exterior of the casing and along an axis substantially parallel thereto, and the interior of the casing is otherwise substantially isolated from the longitudinally distributed locations; flowing a fluid in at least one of a direction from the interior of the casing to the distributed locations and a direction to the interior of the casing from the distributed locations; and wherein the fluid communication between the flow path traversing the length of the formation and the interior of the casing is selectively closable. - View Dependent Claims (30)
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31. A method for treating multiple formations traversed by a well bore comprising:
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providing a well bore casing in a well bore and having at least one perforating gun positioned exterior thereof and adjacent a first formation and at least one second perforating gun positioned exterior thereof and adjacent a second formation; functioning the perforating gun thereby providing first lengthwise distributed perforations in the first formation without perforating the well bore casing; selectively opening at least one aperture in the well bore casing; pumping a fluid from an interior of the well bore casing, through the aperture and into the first distributed perforations; closing the aperture; and functioning the second perforating gun thereby providing second lengthwise distributed perforations in the second formation without perforating the well bore casing. - View Dependent Claims (32, 33)
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Specification