# US 10,309,188 B2 · Vee ramp slips with plug > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,309,188 B2 - Document ID: US10309188B2 - Status: Granted - Kind: B2 - Application number: 15/427,250 - Filed: 2017-02-08 - Published: 2017-08-17 - Granted: 2019-06-04 - Earliest claimed: 2016-02-08 - Assignees: Advanced Frac Systems LLC - Applicants: Advanced Frac Systems LLC - Inventors: Henry Joe Jordan, Jr. - Web page: https://patentgrep.com/patent/US10309188B2 ## CPC - E21B 33/128: with a member expanded radially by axial pressure (E21B33/122, E21B33/124 take precedence) - E21B 33/129: with mechanical slips for hooking into the casing (E21B33/122, E21B33/124 take precedence) - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS ## Abstract A plug is provided that includes a mandrel, a sealing element, a slip and ramp assembly, a lock ring, at least one antirotation device, and a lower ball standoff. The slip and ramp assembly have linear and radial angles allowing a mandrel wall that is thin when compared to the overall diameter of the mandrel. The sealing element is configured so that when set additional pressure from the surface increases the sealing ability of the sealing element. Antirotation devices are provided to assist in mill out. Lock ring is provided to keep the slips in their set position and a further configured so that additional downward forces increase the locking ability of lock ring. A lower ball standoff is provided so that in the event of reverse flow a ball from below is prevented from lodging within the plug and is held at the lower end of the plug were standoffs are provided to allow fluid flow around the ball. ## Claims ### Claim 1 A tool for downhole use comprising: a mandrel having a ramp, wherein the ramp has a first angle and a second angle, wherein the ramp first angle is radially offset and on a plane perpendicular to a line extending radially outward from the centerline of the mandrel and the ramp second angle is between a 10 and 30 degree angle from a line extending radially outward from the centerline of the mandrel; a slip having a first angle and a second angle, wherein the slip first angle and the slip second angle, corresponds to the ramp first angle and the ramp second angle, a sealing element circumferentially mounted on the mandrel, and a backup ring circumferentially mounted on the mandrel. ### Claim 2 (depends on 1) The tool for downhole use of claim 1 wherein, the mandrel provides a through bore diameter greater than 70% of the overall diameter of the tool. ### Claim 3 (depends on 1) The tool for downhole use of claim 1 further comprising a lock ring circumferentially mounted on the mandrel. ### Claim 4 (depends on 3) The tool for downhole use of claim 3 wherein, the lock ring is provided with serrations and the mandrel is provided with serrations, wherein the lock ring serrations and the mandrel serrations interlock. ### Claim 5 (depends on 1) The tool for downhole use of claim 1 wherein, the sealing element when axially compressed forms a cup packer. ### Claim 6 (depends on 1) The tool for downhole use of claim 1 wherein, the tool further comprises an antirotation device. ### Claim 7 (depends on 6) The tool for downhole use of claim 6 wherein, the antirotation device is a castellation. ### Claim 8 (depends on 1) The tool for downhole use of claim 1 wherein, the tool further comprises a reverse flow ball stop. ### Claim 9 (depends on 1) The tool for downhole use of claim 1 wherein, the slip first angle is about 15° to a centerline of the tool. ### Claim 10 (depends on 1) The tool for downhole use of claim 1 wherein, the slip first angle is between 10° and 30° to a centerline of the tool. ### Claim 11 (depends on 1) The tool for downhole use of claim 1 wherein, the slip second angle is circumferentially offset by 15° from a line extending radially outwards from the center of the tool. ### Claim 12 A method of actuating a downhole tool comprising; axially compressing a first end of the tool towards a second end of the tool, forcing a backup ring to move towards a sealing element, wherein the sealing element is forced radially outwards, forcing a slip having a first angle and a second angle into a slot having a corresponding first angle and second angle; wherein the slip first angle is radially offset and on a plane perpendicular to a line extending radially outward from the centerline of the mandrel and the slip second angle is between a 10 and 30 degree angle from a line extending radially outward from the centerline of the mandrel. ### Claim 13 (depends on 12) The method of actuating a downhole tool of claim 12 wherein, the mandrel provides a through bore diameter greater than 70% of the overall diameter of the tool. ### Claim 14 (depends on 12) The method of actuating a downhole tool of claim 12 further comprising a lock ring circumferentially mounted on the mandrel. ### Claim 15 (depends on 14) The method of actuating a downhole tool of claim 14 wherein, the lock ring is provided with serrations and the mandrel is provided with serrations, wherein the lock ring serrations and the mandrel serrations interlock. ### Claim 16 (depends on 12) The method of actuating a downhole tool of claim 12 wherein, the sealing element when axially compressed forms a cup packer. ### Claim 17 (depends on 12) The method of actuating a downhole tool of claim 12 wherein, the tool further comprises an antirotation device. ### Claim 18 (depends on 17) The method of actuating a downhole tool of claim 17 wherein, the antirotation device is a castellation. ### Claim 19 (depends on 12) The method of actuating a downhole tool of claim 12 wherein, the tool further comprises a reverse flow ball stop. ### Claim 20 (depends on 12) The method of actuating a downhole tool of claim 12 wherein, the slip first angle is about 15° to a centerline of the tool. ### Claim 21 (depends on 12) The method of actuating a downhole tool of claim 12 wherein, the slip first angle is between 10° and 30° to a centerline of the tool. ### Claim 22 (depends on 12) The method of actuating a downhole tool of claim 12 wherein, the slip second angle is circumferentially offset by 15° from a line extending radially outwards from the center of the tool.