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US 12,448,558 B2Granted
Blowout-preventers (BOP) elastomer seals with improved self-healing
AssigneeHydril USA Distribution LLC
InventorsJoseph Incavo, Nusrat Farzana, Ming Yu Huang
Life of this patent
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Abstract
A self-healing elastomeric compound for use in blowout preventer packers includes one or more elastomers, carbon black, silica, and a self-healing agent evenly distributed throughout the compound.
Claims16
A self-healing elastomeric compound for comprising:
- one or more elastomers;
- carbon black;
- silica;
- a self-healing agent;
- and
- a curing agent comprising sulfur and a peroxide,
- wherein the self-healing agent comprises polyethyleneimine,
- wherein the self-healing agent has a concentration between 0.05 and 30 parts per hundred resin (phr) of the one or more elastomers,
- wherein the silica has a concentration between 5 and 50 phr of the one or more elastomers,
- wherein the sulfur has a concentration between 0.1 and 5 phr of the one or more elastomers,
- wherein the peroxide has a concentration between 0.1 and 10 phr of the one or more elastomers, and
- wherein the self-healing elastomeric compound is used for a packer in a blowout preventer (BOP) mounted on a wellhead casing.
9 more elements
A system, comprising:
- at least one elastomeric packer, wherein each of the at least one elastomeric packer is made of a self-healing elastomer compound, comprising:
- an elastomer;
- a self-healing agent evenly distributed throughout the self-healing elastomer compound;
- carbon black;
- silica;
- and
- a curing agent comprising sulfur and a peroxide,
- wherein the self-healing agent comprises polyethyleneimine,
- wherein the self-healing agent has a concentration between 0.05 and 30 parts per hundred resin (phr) of the elastomer,
- wherein the silica has a concentration between 5 and 50 phr of the elastomer,
- wherein the sulfur has a concentration between 0.1 and 5 phr of the one or more elastomers,
- wherein the peroxide has a concentration between 0.1 and 10 phr of the one or more elastomers, and
- wherein the at least one elastomeric packer is used in a blowout preventer (BOP) mounted on a wellhead casing.
10 more elements
A method for increasing a life of a blowout preventer (BOP) comprising:
- assembling a BOP packer in the BOP, wherein the BOP is mounted on a wellhead casing, and wherein the BOP packer is made of a self-healing elastomer compound comprising:
- an elastomer;
- a self-healing agent;
- carbon black;
- a curing agent comprising sulfur and a peroxide;
- and
- silica,
- wherein the self-healing agent comprises polyethyleneimine,
- wherein the self-healing agent has a concentration between 0.05 and 30 parts per hundred resin (phr) of the elastomer,
- wherein the silica has a concentration between 5 and 50 phr of the elastomer, and
- wherein the sulfur has a concentration between 0.1 and 5 phr of the one or more elastomers, and
- wherein the peroxide has a concentration between 0.1 and 10 phr of the one or more elastomers, and
- activating the self-healing agent in the BOP packer, wherein the self-healing agent is activated by initiating a chemical bond creation within the self-healing elastomer compound at crack-propagating conditions.
10 more elements
Dependencies are inferred from the claim text.