Systems and methods in which colloidal silica gel is used to resist corrosion of a wellhead component in a well cellar
AssigneeSaudi Arabian Oil Company
InventorsFaisal Alissa, Bader Aljuaid, Omar Ashi, Rashed Altowairqi
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Abstract
A system includes a well cellar, a wellhead and a colloidal silica gel. The well cellar includes a base and sidewalls extending from the base. The wellhead includes an aboveground region extending above the well cellar and a belowground region in the well cellar. The belowground region of the wellhead includes a wellhead component having an exterior surface. The colloidal silica gel occupies a volume extending from the base and sidewalls of the well cellar to the exterior surface of the wellhead component. The colloidal silica gel covers the exterior surface of the wellhead component.
Claims20
A system comprising:
- a well cellar comprising a base and sidewalls extending from the base;
- a wellhead comprising an aboveground region extending above the well cellar and a belowground region in the well cellar, the belowground region of the wellhead comprising a wellhead component having an exterior surface;
- a colloidal silica gel occupying a volume extending from the base and sidewalls of the well cellar to the exterior surface of the wellhead component, wherein the colloidal silica gel covers the exterior surface of the wellhead component;
- and
- sand completely covering an upper surface of the colloidal silica gel.
A system comprising:
- a well cellar comprising a base and sidewalls extending from the base;
- a wellhead comprising an aboveground region extending above the well cellar and a belowground region in the well cellar, the belowground region of the wellhead comprising a wellhead component having an exterior surface;
- and
- a colloidal silica gel occupying a volume extending from the base and sidewalls of the well cellar to the exterior surface of the wellhead component, wherein the colloidal silica gel covers the exterior surface of the wellhead component,
- wherein the wellhead comprises a landing base, and the colloidal silica gel covers an exterior surface of the landing base.
Dependencies are inferred from the claim text.