# US 2024/0200419 A1 · Wellhead corrosion mitigation > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2024/0200419 A1 - Document ID: US20240200419A1 - Status: Published application - Kind: A1 - Application number: 18/065,754 - Filed: 2022-12-14 - Published: 2024-06-20 - Earliest claimed: 2022-12-14 - Assignees: Saudi Arabian Oil Company - Applicants: Saudi Arabian Oil Company - Inventors: Faisal Mohammed ALISSA; Norah Waled ALJURYYED - Web page: https://patentgrep.com/patent/US20240200419A1 ## CPC - E21B 33/03: Well heads; Setting-up thereof - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS ## Abstract The present disclosure relates to a system including: a wellhead including: a landing base; a wellhead pipe, wherein the wellhead pipe extends from the landing base; and a surface casing, wherein the surface casing at least partially surrounds the wellhead pipe; a hydrophobic sand pack including a hydrophobic sand, the hydrophobic sand pack at least partially surrounding: the landing base, the wellhead pipe, the surface casing, or any combination thereof. ## Claims ### Claim 1 A system comprising: a wellhead comprising: a landing base; a wellhead pipe, wherein the wellhead pipe extends from the landing base; and a surface casing, wherein the surface casing at least partially surrounds the wellhead pipe; a hydrophobic sand pack comprising a hydrophobic sand, the hydrophobic sand pack at least partially surrounding: the landing base, the wellhead pipe, the surface casing, or any combination thereof, wherein the hydrophobic sand comprises sand and a hydrophobic compound, and wherein the hydrophobic compound comprises a silane compound. ### Claim 2 (depends on 1) The system of claim 1, wherein the wellhead further comprises a cemented base, and wherein the hydrophobic sand pack at least partially surrounds the cemented base. ### Claim 3 (canceled) ### Claim 4 (depends on 1) The system of claim 1, wherein the hydrophobic sand comprises from 50 wt % to 99.9999 wt % sand. ### Claim 5 (depends on 1) The system of claim 1, wherein the sand comprises a plurality of particles, and wherein the plurality of particles has an average particle size (ISO 14688-1:2017) from 0.6 mm to 2 mm. ### Claim 6 (canceled) ### Claim 7 (depends on 1) The system of claim 1, wherein the silane compound comprises trimethylsilanol (TMS). ### Claim 8 (depends on 1) The system of claim 1, wherein the hydrophobic sand pack is located at least partially within a well cellar, at least partially surrounds the well cellar, or any combination thereof. ### Claim 9 (depends on 1) The system of claim 1, further comprising a containment structure, wherein the containment structure is designed to contain the hydrophobic sand pack at the wellhead. ### Claim 10 A method comprising: providing a wellhead comprising: a landing base; a wellhead pipe, wherein the wellhead pipe extends from the landing base; and a surface casing, wherein the surface casing at least partially surrounds the wellhead pipe; at least partially surrounding the landing base, the wellhead pipe, the surface casing, or any combination thereof with a hydrophobic sand pack comprising a hydrophobic sand, wherein the hydrophobic sand comprises sand and a hydrophobic compound, and wherein the hydrophobic compound comprises a silane compound. ### Claim 11 (depends on 10) The method of claim 10, further comprising at least partially surrounding a cemented base of the wellhead with the hydrophobic sand pack. ### Claim 12 (depends on 10) The method of claim 10, further comprising compacting the hydrophobic sand pack. ### Claim 13 (canceled) ### Claim 14 (depends on 10) The method of claim 10, wherein the hydrophobic sand comprises from 50 wt % to 99.9999 wt % sand. ### Claim 15 (depends on 10) The method of claim 10, wherein the sand comprises a plurality of particles, and wherein the plurality of particles has an average particle size (ISO 14688-1:2017) from 0.6 mm to 2 mm. ### Claim 16 (canceled) ### Claim 17 (depends on 10) The method of claim 10, wherein the silane compound comprises trimethylsilanol (TMS). ### Claim 18 (depends on 10) The method of claim 10, further comprising contacting an interior of the hydrophobic sand pack, at least partially, with: the landing base, the wellhead pipe, the surface casing, a cemented base, or any combination thereof. ### Claim 19 (depends on 10) The method of claim 10, wherein the hydrophobic sand of the hydrophobic sand pack exhibits less than 1% swelling by volume upon being covered on an upward facing side with an equal volume of liquid water at 85° F. (29.4° C.) over a period of 24 hours. ### Claim 20 A system comprising: a wellhead comprising: a landing base; a wellhead pipe, wherein the wellhead pipe extends from the landing base; and a surface casing, wherein the surface casing at least partially surrounds the wellhead pipe; a hydrophobic sand pack comprising a hydrophobic sand, wherein the hydrophobic sand comprises trimethylsilanol (TMS), and wherein the hydrophobic sand pack at least partially 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 hydrophobic sand pack at the wellhead. ### Claim 21 (depends on 1) The system of claim 1, wherein the hydrophobic sand of the hydrophobic sand pack exhibits less than 1% swelling by volume upon being covered on an upward facing side with an equal volume of liquid water at 85° F. (29.4° C.) over a period of 24 hours. ### Claim 22 (depends on 9) The system of claim 9, wherein the containment structure comprises earth, sand, a rock, a polymer, a metal, wood, concrete, masonry, a fiber, or any combination thereof. ### Claim 23 (depends on 20) The system of claim 20, wherein the hydrophobic sand of the hydrophobic sand pack exhibits less than 1% swelling by volume upon being covered on an upward facing side with an equal volume of liquid water at 85° F. (29.4° C.) over a period of 24 hours.