Expandable packer
First Claim
1. An expandable packer comprising:
- an integral composite monolithic tubular body having a longitudinal bore therethrough;
a non-expandable first end and a non-expandable second end on said integral composite monolithic tubular body, integral composite monolithic tubular adapted to be attached to a drill string and unitary with the body; and
,a central expandable portion of the integral composite monolithic tubular body between said first end and said second end.
1 Assignment
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Accused Products
Abstract
An integral bodied composite packer is constructed entirely of a composite material. It can include an expandable middle portion with an elastomeric cover to engage an exterior surface of a well bore. The expandable portion can include continuous strands of polymeric fibers to reinforce the body and prevent extrusion. The packer body can have longitudinal cuts or slats to provide rigidity of the body after expansion. The slats can overlap. The packer can include an elastomeric cover or layer therein to engage the well bore. The expandable portion can include a reinforcement member in a laminar portion of the body made from high strength alloys, fiber-reinforced polymers and/or elastomers, nanofiber, nanoparticle, and nanotube reinforced polymers and/or elastomers.
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Citations
21 Claims
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1. An expandable packer comprising:
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an integral composite monolithic tubular body having a longitudinal bore therethrough; a non-expandable first end and a non-expandable second end on said integral composite monolithic tubular body, integral composite monolithic tubular adapted to be attached to a drill string and unitary with the body; and
,a central expandable portion of the integral composite monolithic tubular body between said first end and said second end. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An expandable packer comprising:
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an integral one-piece composite tubular body having a longitudinal bore therethrough; a non-expandable first end and a non-expandable second end, at least one end adapted to be attached to a drill string; and a central expandable portion of said body between said first end and said second end including a plurality of slat reinforcement members. - View Dependent Claims (12, 13)
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14. An expandable packer comprising:
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a non-metallic monolithic tubular body having a longitudinal bore therethrough; a non-expandable first end and a non-expandable second end on said non-metallic monolithic tubular body, at least one end adapted to be attached to a drill string and unitary with the body; and
,a central expandable portion of said non-metallic monolithic tubular body between said first end and said second end. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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Specification