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US 2024/0200425 A1Published application
Polymer gel packs for wellhead corrosion mitigation
AssigneeSaudi Arabian Oil Company
InventorsFaisal Mohammed ALISSA, Norah ALJURYYED
Life of this patent
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Abstract
A wellhead system for mitigating corrosion thereof may include a polymer gel pack including a polymer gel, the polymer gel pack at least partially surrounding at least a portion of the wellhead. The portions of the wellhead that may be surrounded with the polymer gel pack may include the landing base, the wellhead pipe, the surface casing, the cemented base, or any combination thereof.
Claims20
A system comprising:
- a wellhead comprising:
- a landing base;
- a wellhead pipe extending from the landing base;
- and
- a surface casing at least partially surrounding the wellhead pipe;
- a polymer gel pack comprising a polymer gel, the polymer gel pack surrounding:
- the landing base, the wellhead pipe, the surface casing, or any combination thereof, wherein forming the polymer gel pack comprises polymerizing, at least partially, a base composition comprising:
- acrylamide at 20 wt % to 40 wt % by weight of the base composition, and
- one or more of:
- a co-monomer at from about 3 wt % to about 20 wt % by weight of the base composition,
- a bio-monomer from about 1 wt % to about 30 wt % by weight of the base compositions,
- an oxygen scavenger at from about 1 wt % to about 3 wt % by weight of the base composition, or
- a corrosion inhibitor at from about 5 wt % to about 10 wt % by weight of the base composition;
- and
- wherein a crosslinker of the base composition comprises aluminum chloride, iron chloride, or any combination thereof.
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A system comprising:
- a wellhead comprising:
- a landing base;
- a wellhead pipe extending from the landing base;
- and
- a surface casing at least partially surrounding the wellhead pipe;
- a polymer gel pack comprising a polymer gel, wherein forming the polymer gel pack comprises polymerizing, at least partially, a base composition comprising:
- acrylamide at 20 wt % to 40 wt % by weight of the base composition, and
- one or more of:
- a co-monomer at from about 3 wt % to about 20 wt % by weight of the base composition,
- a bio-monomer from about 1 wt % to about 30 wt % by weight of the base composition,
- an oxygen scavenger at from about 1 wt % to about 3 wt % by weight of the base composition, or
- a corrosion inhibitor at from about 5 wt % to about 10 wt % by weight of the base composition;
- wherein a crosslinker of the base composition comprises aluminum chloride, iron chloride, or any combination thereof;
- wherein the polymer gel pack surrounds and is at least partially in contact with:
- the landing base, the wellhead pipe, the surface casing, or any combination thereof;
- and
- a containment structure, wherein the containment structure is designed to contain the polymer gel pack at the wellhead.
14 more elements
A method comprising:
- providing a wellhead comprising:
- a landing base;
- a wellhead pipe extending from the landing base;
- and
- a surface casing at least partially surrounding the wellhead pipe;
- forming a polymer gel pack comprising a polymer gel, wherein forming the polymer gel pack comprises polymerizing, at least partially, a base composition comprising acrylamide at 20 wt % to 40 wt % by weight of the base composition;
- crosslinking, at least partially, the base composition with a crosslinker, wherein the crosslinker comprises aluminum chloride, iron chloride, or any combination thereof;
- wherein the base composition further comprises:
- a co-monomer at from about 3 wt % to about 20 wt % by weight of the base composition,
- a bio-monomer from about 1 wt % to about 30 wt % by weight of the base composition,
- an oxygen scavenger at from about 1 wt % to about 3 wt % by weight of the base composition,
- a corrosion inhibitor at from about 5 wt % to about 10 wt % by weight of the base composition, or
- any combination thereof;
- and
- surrounding the landing base, the wellhead pipe, the surface casing, or any combination thereof, with the polymer gel pack.
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Dependencies are inferred from the claim text.