# US 11,111,749 B2 · Correcting offsets in wellbore tubulars > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,111,749 B2 - Document ID: US11111749B2 - Status: Granted - Kind: B2 - Application number: 16/412,198 - Filed: 2019-05-14 - Published: 2020-11-19 - Granted: 2021-09-07 - Earliest claimed: 2019-05-14 - Assignees: Saudi Arabian Oil Company - Applicants: Saudi Arabian Oil Company - Inventors: Sajid Hussain; Victor Jose Bustamante Rodriguez - Web page: https://patentgrep.com/patent/US11111749B2 ## CPC - E21B 33/02: Surface sealing or packing - E21B 33/03: Well heads; Setting-up thereof - E21B 17/1078: {Stabilisers or centralisers for casing, tubing or drill pipes (E21B17/1007 - E21B17/1064 take precedence)} - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS ## Abstract A system for positioning an inner tubular within an outer tubular. The outer tubular is inserted in a wellbore and has a first central axis. The inner tubular defines an inner passage of the outer tubular and is inserted in a wellbore. The inner tubular has a second central axis that is offset from and parallel to the first central axis. A flange is attached at an uphole end of the outer tubular and encircles an outer circumference of the inner tubular. The flange has a third central axis that is in-line with the second central axis. A wellhead housing is positioned at an uphole end of the flange and encircles the outer circumference of the inner tubular. A casing hanger is positioned within the wellhead housing and has an interference with the wellhead housing. The casing hanger is frictionally attached to the inner tubular. ## Claims ### Claim 1 A system for positioning an inner tubular within an outer tubular positioned within a wellbore, the system comprising: an outer tubular defining an inner passage inserted in a wellbore, the outer tubular having a first central axis; an inner tubular defining an inner passage of the outer tubular, the inner tubular inserted in a wellbore, the inner tubular having a second central axis that is offset from and parallel to the first central axis; a flange attached at an uphole end of the outer tubular, the flange encircling an outer circumference of the inner tubular, wherein the flange extends from an outer surface of the inner tubular past an outer surface of the outer tubular, the flange having a third central axis that is in-line with the second central axis; a wellhead housing, the wellhead housing positioned at an uphole end of the flange and the wellhead housing encircling the outer circumference of the inner tubular, the flange positioned between the wellhead housing and the uphole end of the outer tubular; and a casing hanger positioned within the wellhead housing, the casing hanger frictionally attached to the inner tubular within the wellhead housing. ### Claim 2 (depends on 1) The system of claim 1, wherein the casing hanger comprising casing slips and a seal assembly installed around the inner tubular. ### Claim 3 (depends on 1) The system of claim 1, wherein the flange is a long weld neck flange. ### Claim 4 (depends on 1) The system of claim 1, wherein the flange is made from the same material as that of the wellhead housing. ### Claim 5 (depends on 1) The system of claim 1, wherein the flange is welded to the outer surface of the outer tubular. ### Claim 6 (depends on 1) The system of claim 1, wherein the flange is welded to the wellhead housing. ### Claim 7 A method comprising: providing a blow out preventer; providing a wellhead housing; providing an inner tubular and an outer tubular that encircles the inner tubular, the inner tubular having a fixed offset from the outer tubular; removing the blow out preventer; cutting the inner tubular to a first specified height above the wellhead housing; cutting an outer tubular to a second specified height lower than the first specified height; positioning a flange around the inner tubular and atop an uphole end of the outer tubular; positioning a corrected wellhead housing atop the flange; inserting a casing hanger into the corrected wellhead housing, the casing hanger encircling the inner tubular, the casing hanger comprising casing slips and a seal assembly; welding the flange to an outer surface of the outer tubular; welding the corrected wellhead housing to the flange; and energizing the seal assembly. ### Claim 8 (depends on 7) The method of claim 7 wherein the flange is welded to the outer tubular prior to being welded to the corrected wellhead housing. ### Claim 9 (depends on 7) The method of claim 7, wherein cutting the inner tubular occurs prior to the cutting the outer tubular. ### Claim 10 (depends on 7) The method of claim 7, wherein the corrected wellhead housing is positioned atop the flange prior to the casing hanger being positioned within the corrected wellhead housing. ### Claim 11 (depends on 7) The method of claim 7, wherein the fixed offset between the inner and outer tubulars is fixed by cement. ### Claim 12 (depends on 7) The method of claim 7, wherein the casing slips comprise a manual casing slip. ### Claim 13 (depends on 12) The method of claim 12, wherein the seal assembly is energized after positioning the casing hanger. ### Claim 14 A method comprising: providing a blow out preventer; providing a wellhead housing; providing an inner tubular encircled by an outer tubular, the outer tubular having a first central axis, the inner tubular having a second central axis offset and parallel to the first central axis; removing the blow out preventer; cutting the inner tubular to a first specified height above the wellhead housing; cutting the outer tubular to a second specified height lower than the first specified height; attaching, by a flange, a corrected wellhead housing to the inner tubular, the flange having a third central axis that is in-line with the second central axis, the corrected wellhead housing having a fourth central axis that is in-line with the second central axis; inserting a casing hanger within the corrected wellhead housing, the casing hanger comprising casing slips and a seal assembly; and supporting the inner tubular, at least partially, by the casing hanger positioned within the corrected wellhead housing and encircling the inner tubular, the casing hanger having a fifth central axis that is in line with the second central axis. ### Claim 15 (depends on 14) The method of claim 14, wherein the flange is positioned between the outer tubular and the corrected wellhead housing. ### Claim 16 (depends on 14) The method of claim 14, wherein the flange is welded to the outer tubular. ### Claim 17 (depends on 14) The method of claim 14, wherein the flange is welded to the corrected wellhead housing. ### Claim 18 (depends on 14) The method of claim 14, wherein the offset between the inner and outer tubulars is fixed by cement.