Self-setting downhole tool
First Claim
Patent Images
1. A downhole tool for use in a wellbore comprising:
- a mandrel;
a first spacer ring disposed about said mandrel, said first spacer ring being fixed from axial movement;
a second spacer ring disposed about said mandrel;
an expandable member disposed about said mandrel and disposed between said first spacer ring and said second spacer ring wherein said expandable member expands axially under fluid pressure such that said expansion moves said second spacer ring axially;
an anchoring assembly; and
a sealing element, wherein said anchoring assembly and sealing element are operationally connected to said second spacer ring such that when said second spacer ring moves axially said anchoring assembly and sealing element move from an unset position to a set position.
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Accused Products
Abstract
A setting apparatus for use on a downhole tool in a wellbore is described. The setting apparatus comprises an expandable member configured for axial expansion under fluid pressure wherein said expansion moves said downhole tool from an unset position to a set position. Generally, the fluid will be a gas generated downhole and can be generated near or in the expandable member.
31 Citations
19 Claims
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1. A downhole tool for use in a wellbore comprising:
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a mandrel; a first spacer ring disposed about said mandrel, said first spacer ring being fixed from axial movement; a second spacer ring disposed about said mandrel; an expandable member disposed about said mandrel and disposed between said first spacer ring and said second spacer ring wherein said expandable member expands axially under fluid pressure such that said expansion moves said second spacer ring axially; an anchoring assembly; and a sealing element, wherein said anchoring assembly and sealing element are operationally connected to said second spacer ring such that when said second spacer ring moves axially said anchoring assembly and sealing element move from an unset position to a set position. - View Dependent Claims (2, 3, 4, 5)
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6. A setting apparatus for use on a downhole tool in a wellbore comprising:
an expandable member configured for axial expansion under fluid pressure, wherein said expansion moves said downhole tool from an unset position to a set position, and wherein said expandable member is expanded by the in situ generation of a high pressure gas formed within said expandable member by a reaction of chemicals initiated by an electrical pulse. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of anchoring a downhole tool in a wellbore comprising:
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(a) introducing said downhole tool having an expandable member into said wellbore to locate said downhole tool at a desired position; and (b) providing fluid pressure to said expandable member to axially expand said expandable member such that said downhole tool is moved from an unset position in which said downhole tool is not anchored to a set position in which said downhole tool is anchored in said wellbore, wherein said providing fluid pressure to said expandable member comprises providing an electrical pulse to a chemical associated with said expandable member such that said electrical pulse causes said chemical to undergo a gas producing chemical reaction sufficient for said gas to inflate said expandable member and cause axial expansion. - View Dependent Claims (16, 17, 18, 19)
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Specification