Shock attenuator for gun system
First Claim
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1. A perforation gun string for use in perforating a wellbore, comprising:
- a perforation gun, wherein the perforation gun forms at least a part of the perforation gun string; and
sections of a swellable material coupled to and spatially located around the perforation gun string, wherein the sections of the swellable material are configured to be exposed to a downhole wellbore environment and to swell and protrude beyond an outer surface of the perforation string in response to exposure to the downhole wellbore environment, and wherein the sections of the swellable material are spatially arranged to form one or more longitudinal fluid gaps between adjacent sections of the swellable material, the gaps being configured to allow fluid flow therebetween.
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Accused Products
Abstract
A perforation gun string includes a perforation gun that forms at least part of the perforation gun string and a swellable material coupled to the perforation gun string. The swellable material is configured to be exposed to a downhole wellbore environment and to swell in response to exposure to the downhole wellbore environment. Further, the swellable material is configured to protrude beyond an outer surface of the perforation gun string when the swellable material swells.
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Citations
19 Claims
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1. A perforation gun string for use in perforating a wellbore, comprising:
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a perforation gun, wherein the perforation gun forms at least a part of the perforation gun string; and sections of a swellable material coupled to and spatially located around the perforation gun string, wherein the sections of the swellable material are configured to be exposed to a downhole wellbore environment and to swell and protrude beyond an outer surface of the perforation string in response to exposure to the downhole wellbore environment, and wherein the sections of the swellable material are spatially arranged to form one or more longitudinal fluid gaps between adjacent sections of the swellable material, the gaps being configured to allow fluid flow therebetween. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A downhole tool, comprising:
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a tandem for use in making up a perforation gun; and sections of a swellable material coupled to the tandem, wherein the sections of the swellable material are configured to swell in response to being exposed to a downhole wellbore environment, wherein the sections of the swellable material are configured to permit fluid flow between an annular region above the sections of the swellable material and an annular region below the sections of the swellable material after the sections of the swellable material swell, and wherein the sections of the swellable material are spatially arranged to form one or more longitudinal fluid gaps between adjacent sections of the swellable material. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A method of perforating a wellbore, comprising:
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running a perforation gun string into the wellbore to a perforation depth, the perforation gun string comprising sections of swellable material coupled to and spatially located around the perforation gun string; allowing the sections of the swellable material to swell, wherein the sections of the swellable material are spatially arranged to form one or more longitudinal fluid gaps between adjacent sections of the swellable material; and perforating the wellbore after the sections of the swellable material swell. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification