# US 12,215,556 B2 · Anisotropic mechanical shear bolt > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,215,556 B2 - Document ID: US12215556B2 - Status: Granted - Kind: B2 - Application number: 18/302,192 - Filed: 2023-04-18 - Published: 2024-10-24 - Granted: 2025-02-04 - Earliest claimed: 2023-04-18 - Assignees: Baker Hughes Oilfield Operations LLC - Applicants: Baker Hughes Oilfield Operations LLC - Inventors: Juan Carlos Flores; Hernando Andres Garcia Silva; Andrew Ponder - Web page: https://patentgrep.com/patent/US12215556B2 ## CPC - E21B 23/00: Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells (setting of casings, screens or liners E21B43/10) - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS ## Abstract A downhole system and a method of performing an operation downhole. The downhole system includes a string, a downhole tool, and a release device. A downhole tool is coupled to a string via the release device. The release device includes a shear member therein having a first shear axis that has a first shear resistance and a second shear axis having a second shear resistance less than the first shear resistance, wherein the first shear axis is aligned with a longitudinal axis of the string and the second shear axis is aligned with a circumferential axis of the string. The string is conveyed through a borehole to place the downhole tool at a selected location of the borehole. The downhole tool is secured within the borehole and the string is rotated to release the release device. ## Claims ### Claim 1 A method of performing an operation downhole, comprising: coupling a downhole tool to a string via a release device, the release device comprising a bolt having a longitudinal bolt axis aligned with a radial axis of the downhole tool, the bolt comprising a first shank and a second shank separated along the longitudinal bolt axis by a shear region including the shear member therein, the shear member including a cylindrical body having a member axis oriented within a transverse plane of the bolt and aligned with the longitudinal axis of the string, the cylindrical body coupled to a first gap surface of the first shank at a first location along a circumferential side of the cylindrical body and to a second gap surface of the second shank at a second location along the circumferential side of the cylindrical body diametrically opposite the first location, wherein the shear member has a first shear axis that has a first shear resistance and a second shear axis having a second shear resistance less than the first shear resistance, wherein the first shear axis is aligned with a longitudinal axis of the string and the second shear axis is aligned with a circumferential axis of the string; conveying the string through a borehole to place the downhole tool at a selected location of the borehole; securing the downhole tool within the borehole; and rotating the string to release the release device. ### Claim 2 (depends on 1) The method of claim 1, further comprising a first beam at the first location extending along the member axis and a second beam at the second location extending along the member axis. ### Claim 3 (depends on 1) The method of claim 1, further comprising rotating the string to separate the shear member from at least one of the first gap surface and the second gap surface. ### Claim 4 (depends on 1) The method of claim 1, further comprising performing at least one of: (i) measuring a downhole parameter while conveying the string to the selected location; (ii) scraping the borehole while conveying the string to the selected location; (iii) cleaning the borehole while conveying the string to the selected location; (iv) pumping a fluid through the string; (v) applying a compression along the string with the downhole tool secured within the borehole; and (vi) applying a tension along the string with the downhole tool secured within the borehole. ### Claim 5 A downhole system, comprising: a string; a downhole tool; and a release device configured to couple the downhole tool to the string, the release device comprising a bolt having a longitudinal bolt axis, the bolt comprising a first shank and a second shank separated along the longitudinal bolt axis by a shear region including a shear member therein, the shear member including a cylindrical body having a member axis oriented within a transverse plane of the release device and aligned with the longitudinal axis of the string, wherein the cylindrical body is coupled to a first gap surface of the first shank at a first location along a circumferential side of the cylindrical body and to a second gap surface of the second shank at a second location along the circumferential side of the cylindrical body diametrically opposite the first location, the shear member having a first shear axis that has a first shear resistance and a second shear axis having a second shear resistance less than the first shear resistance, wherein the first shear axis is aligned with a longitudinal axis of the string and the second shear axis is aligned with a circumferential axis of the string. ### Claim 6 (depends on 5) The downhole system of claim 5, further comprising a first beam at the first location extending along the member axis and a second beam at the second location extending along the member axis. ### Claim 7 (depends on 6) The downhole system of claim 6, wherein the shear member is configured to separate from at least one of the first gap surface and the second gap surface upon a rotation of the string. ### Claim 8 (depends on 5) The downhole system of claim 5, wherein the shear member includes a plurality of rectangular parallelepiped structures parallel to a first gap surface of the first shank and a second gap surface of the second shank. ### Claim 9 (depends on 5) The downhole system of claim 5, wherein a transverse cross-section of the release device is in a shape of one of: (i) a circle; (ii) an ellipse; (iii) an oval; (iv) a square; (v) a hexagon; and (vi) an octagon.